Watch NASA fire up SLS for the first time!

[Music] [Applause] [Music] [Applause] [Applause] [Music] [Applause] [Music] [Applause] [Music] [Applause] [Music] [Applause] [Music] [Applause] [Music] [Music] [Music] [Applause] [Music] [Applause] [Music] [Applause] [Music] [Applause] [Music] [Music] [Applause] [Music] [Music] hello everybody it's me tim dodd the everyday astronaut uh welcome to a uh a big big big milestone day for nasa they are going to be test firing their sls rocket for the first time this is going to be the first time that we ever see four of the rs 25 those space shuttle main engines light up and they're not just going to light up you know when we see spacex two static fires for starship they're like one to three seconds uh and it's not even like when they hold down sometimes they'll hold on to falcon 9 and they'll light it for like two and a half minutes no no this thing is going to be running for eight full minutes because that is the whole flight profile of sls the core stage does run basically all the way to orbit uh just intentionally shy of orbit so that the core stage can deorbit and because we don't have a pre-launch preview because this thing's not launching uh hopefully if it launches it's very very bad uh we do actually have some articles that i wanted articles and videos that i wanted to share with you guys real quick and then we're going to pull up their feed uh but go ahead and if you ever have questions about stuff just browse around on our website you can search everyday astronaut and go to every astronaut then on the website go ahead and just search sls and go ahead and pull this up so i wanted to remind you guys some of the capabilities here um these are kind of changing but this is a pretty good representation of the amount of thrust compared to say the saturn v um the the amount of payload capacity the amount of um how far it can go to on tli a translunar injection so in other words how much weight can it quite literally sling to the moon uh how much it costs approximately and then of course how much it cost per kilogram uh now remember i did a really deep video all about this if you guys have any questions about you know why is why does sls exist in a world of of starship which has this immense promise to bring the cost down to like less than 100 million per launch that was a very we sandbagged that because just in case it cost 100 million it'd still be like the cheapest launch period um but the um the promise of starship is is ridiculous of course it still has a long ways to go before it's anywhere near operational and sls has taken the opposite approach where it's been designed very heavily on on paper using paper animal paper but using you know hardware heritage hardware to make sure that everything down the chain is ready to go the first time it flies and starship can accept failures so totally different philosophies and how you develop so uh just friendly reminder here today where this is team space baby we're here to celebrate progress and for the first time uh the starship or the sls test fire actually moved a full day a couple weeks ago and now it moved forward an hour so things are actually moving forward they're actually ahead of schedule and this i like to see i like to see this this is progress i definitely want to see an sls fly fly a few times in fact even in my in my opinion because i never got to see the space shuttle this is basically uh a lot of hardware quite literally from the space shuttle it'd be loud with those big srbs the srbs today on today's uh the solid rocket boosters on the side of the vehicle uh the big white things will not be fired today it'll only be the core stage um but if i were you guys i would just kind of browse around here on on this article or even i think the other article that's quite relevant both of these are linked in the description is comparing artemis to apollo because i think comparing it to starship um isn't necessarily fair so comparing artemis and the an sls compared to apollo how the apollo program was managed and how it flew out to the moon how it got astronauts onto the moon comparing those two programs is a little bit more fair because it is it is nasa design nasa managed and it's not this modern but but the cool thing about artemis is it does blend commercial programs and commercial partners in along with it so it's kind of this hybrid of the commercial crew and apollo in a sense and personally uh i'm actually a big fan of this because it has been safe a safe way to maintain funding throughout the years of course the artemis program will eventually hopefully this year we'll find out which of these three so the apollo lamb obviously was for the apollo program but the dynamics lander the blue origin national team and of course spacex proposed a starship variant um we'll see which of these three got contracts we're expecting a down select down to down to two maybe down to one uh actually we really don't know how many they might select all three i doubt it i don't think they have the budget for it but we do expect them to most likely down select down to two of these landers so the artemis program is is really cool because it kind of blends a mixture between um old school and new school and again kind of comparing the space launch system the saturn v just go ahead and read through these articles or watch the videos if you guys have questions about sls and if you have questions about their flight profiles this video is really cool to make because we quite literally showed you the the differences in how they get into orbit because sls will get into this really highly elliptical orbit compared to a more just perfectly uh perfectly circular parking orbit that the saturn v did it gets into this really weird orbit around the moon called a near rectilinear halo orbit so this is a really comprehensive video if you guys um haven't seen it already by the way this i love this this shot here because it does show the earth and the moon to scale which is crazy to think about that you can barely even see the moon it's inside that dot uh which is just nuts we often see these pictures of the earth and the moon we see it looks like they're a lot closer and a lot bigger than they are but really the moon is way out there uh 400 kilometers or about 250 miles is a very very long way so definitely watch this video i think this video will give you a really good person i would almost watch them backwards i would almost start with the artemis versus apollo to give you the perspective of why i think the artemis program is valid why i think it makes sense today um why i think it's a safe move to ensure that we get access to the moon and get get get the ball rolling get the ball rolling get the commercial partners involved get funding rolling get the excitement and momentum going in a safe and predictable way and then and then start risking it then start throwing down contracts with with starship and with new glenn and commercial partners to really get it all going so yeah it's uh i'm i'm honestly really excited about sls and i really want to see it fly all right andy i'm going to try to find that i forgot to pull up oh you do have that i just can't hear it then okay okay i'm gonna pull it up here but um it sounds like they might be in a hold but i want to listen in here because we had a little time zone error where we thought they had been quoting in central because this is taking place in central time houston's also in central so we just thought they were um we just thought they were yeah quoting it all in in central but they aren't that is not true so hold on real quick while i find this uh the link and then i'll get right back with you guys but meanwhile um yeah i'm actually genuinely excited for this here we go i'm getting this pulled up for you guys in one second of course it's in 7 20 because nasa is still not broadcasting in 1080 all right andrew i'm ready to go live with this contractor our lead contractor for the project you know they've been working hand in hand with nasa the whole time those teams have really out been performing really really well thus far and then obviously our rs25 engine supplied by airjet rocketdyne you know all three of our teams have done a really good job of getting to today so i'm already seeing a bunch of questions that i should probably answer before we even see this these are quite literally leftover space shuttle engines when i say they're the space shuttle engines it's not like these are the same engines that the space shuttle used um they are rs25s and the there's 16 remnant quite literally rs25 main engines that flew on space shuttle missions so these four engines all flew previously on the space shuttle they've been retrofitted and upgraded for a little more thrust new computers and some overhauls to make them uh to make them capable for sls because sls actually demands a little bit more performance so um yeah i think to me that's honestly super exciting um i am oh there's tracy caldwell cool um let's let's listen in here quick and i'll try to get to you guys questions i do want to listen in on this because we might get some new information um but yeah um but we'll listen in for a little bit i'll try to get back to you guys questions here in a little bit but i want to make sure we're getting information especially if they have are in a hold right now but uh let's listen in for a second inside the vehicle as you're walking up to the launch pad you see this mammoth rocket standing before you and uh from the sensations to the the things that you see to the things that you realize you've got a job to do but yet you're doing this um incredible uh you're having this incredible experience from the the light off of the engines to the uh to the liftoff uh the the swain of the rocket the rumble the the all of the vibrations the controlled explosion happening underneath you to the constant acceleration that you're feeling as you're propelled into orbit to the you know the engines are throttling all you know is that you're just going fast and um and then you're in there with uh your buddies you've been training all this time uh you get to um the the solid rocket boosters as soon as they expend their energy and uh they separate from the vehicle and you're just riding on those main engines the rs25s i remember being so impressed with how smooth and powerful that ride was it was like riding on rails and and then of course the moment you get into into orbit it's some of the the most strange tranquility that you've ever experienced in your life i want to ask you to do something here if you'll indulge me for a second let's just take a look back because we are about a mile away from sls well as you take a look at that what's going through your minds you know i have to i have to give it up for the folks that are in the control room right now because i you know i can remember how i felt standing at the at the foot of the rocket before i launched on it but all those folks like alex was mentioning that have played a role in this plus uh the ones that are um around the test stand um that is their baby and um when those when those engines light there's um there's a lot of hands and eyes and hearts and soul that are uh that are in every ounce of thrust that are coming out of those engines and so i think when i look at that i just think about all of the people um who make up the body of that rocket and the thrust that's coming so i'm i should answer a couple questions because a lot of people are still asking about the rs25s don't forget the sls is expendable fully expendable there is no plans there's really no options realistically without redesigning and making a brand new vehicle which we don't want that to happen because it's been 10 years in the making already uh there is no way to recover these boosters and recover these engines so all of these uh rs25s are going to be expended they're all going to be ditched in the ocean in the traditional manner like quite literally basically every launcher ever except for the space shuttle and then of course the falcon 9 and uh yeah so um a bit of a shame but they are working on re manufacturing and making new uh brand new versions as well so i actually if i pull up that that starship versus sl uh versus sls article um i could show you guys kind of their inventory here let me let me get that pre-cued um and then i will know exactly where it is but they they do have a good amount of hardware done and completed for multiple sls rockets that's something that i don't think that many people realize here actually andrew i'm going to switch over here real quick um so uh let's see this um let's see here the inventory is just up here we did an inventory on all the hardware that they've already completed and uh so here's what's kind of at the time had been completed with starship we're well beyond that now that was sn4 this this video came out last april but this is how much hardware had been done already for the different sls vehicles so we saw a bunch of a bunch of orion hardware we saw orion fly once we saw a test tank but artemis 1 all the hardware is literally done they have this many rs25s completed or that are leftovers and they are re-manufacturing rs25s as we speak so um yeah it will we're seeing more and more they have this many segments of solid rocket boosters as well uh because they are reusing the old space shuttle boosters now they do have an extra segment on the boosters that make them approximately 25 or 20 more powerful so um the rs25 is already 33 more powerful because you added a fourth one at three compared to four uh and then a good almost 20 25 more powerful srbs as well it is very very powerful so and they have already begun stacking the actual booster segments at the cape uh inside the vehicle assembly building that giant you know the giants building that we've all seen out at kennedy space center that's where they built the saturn v that's also where they stacked and and assembled the space shuttle and where they're beginning to finally stack the first sls for artemis one and the crazy thing is once they stack those boosters there's a one year lifespan so we are actually seeing uh sls and and nasa and uh and the whole team at boeing get their butts just kicking ramping up here so um because now the time the clock is quite literally ticking if they don't get it all integrated in a year then uh it'll be a huge setback so we're our fingers are totally crossed that today's test goes well so yeah so this is this is good as far as the delays go and stuff like that because it's uh yeah it i think it puts a little little fuel a little fire under their feet or i don't know how you i don't know how i say it but yeah so i'm going to try listening in here because i'm i'm trying to see if we have a time or anything on this date but they're uh they're kind of in the middle of an interview why don't i answer a couple questions we'll see if they come up with something uh that they can tell us a little bit more here so um let's see this is musical wolves saying uh how big will super heavy static fire be uh when it's ready uh when starship does a static fire with a super heavy booster that will be the most bonkers thing in the entire world i i don't even know i mean i don't know how they're going to do it without a major flame trench without a major water deluge and sound suppress suppression system because uh the first time that that starship gets ready to go orbital it's going to have dozens of raptor engines and those raptor engines are insanely powerful and uh there's going to be dozens of them so it's going to be up to once it's orbital ready it'll be the first ones probably won't be as powerful as the final ones uh as the operational rockets but eventually it's going to be over twice as powerful as sls and right now where i'm standing uh i'm i'm six miles or 10 kilometers away from where they would be doing those tests of super heavy and it's absolutely insane to think that you could maybe i just i just don't even get it i i don't get how they're going to test that thing so um so how big will the static fire be i have no idea it might just be a three second burn but that when that thing lights up it'll be absolutely absolutely ridiculous um cassia says nasa and ahead of schedule don't occur in the same sentence that often what an absolutely wonderful surprise it really is i've been wanting to see this i don't want this stuff to get delayed the more it's delayed the problem is so many checks have been written for this stuff so it's not like if we cancel it right now we'd get all this cost savings there's been an insane amount of money spent there's been an insane amount of money invested into the future already so anything that delays all it does is makes this stuff more expensive and behind schedule so we should be absolutely cheering for the best we want this stuff to be on schedule we want to be ahead of schedule moving forward and uh and kicking butt because that's that's good for the program that's good for commercial programs that's good for everything it's bad period if you're a fan of spaceflight it is bad when this thing delays bad when it's over budget because unfortunately it's not going to be canceled anytime soon um and yeah hey remember speaking of powered parachutes a guy's butt buzzing us right now in a powered parachute that looks amazing i would love to do that uh kirian butterfield thank you so much hey let's listen in real quick and see if yeah oh you guys are saying i can't okay oh it is just so we have no idea maybe it is going to go right now get ready on that clock just in case so what you see it venting there is uh liquid oxygen venting out just like we see with falcon 9's but that's not liquid obviously it vents out as as gaseous oxygen so there will be a skirt at the top there that connects it to the on top of that top dome that will connect it to the icp icpse the interim cryogenic propulsion stage which is basically a delta iv heavy's upper stage let's see are they it's funny the clock is still in eastern time yet they are doing this in central time i don't get what's going on why is that o'clock in the easter we were so confused yeah you gotta love the rs25 honestly it is beautiful they are doing the water deluge i think they're gonna light this baby up right now and remember it's going to fire for eight minutes we will see this thing running for eight minutes straight it'll be awesome i'll i'll be quiet for a while because uh once it lights because i want to hear it and then uh and then we can talk over it because after the first like 30 seconds it's gonna sound the same the whole time there's gonna be nothing new after that point so let's listen in here is that repair she's about to crash sure that looked a little dodgy man i wish they would have something on screen to tell us that they're in a hold or with their approximate oh here we go a reminder we are in a dynamic situation the teams are in a hold right now we are still well within our window for today's test the teams are working towards getting an updated test time for today so we have alex with us and alex um we were listening into a little bit of the control room audio what does it mean that we're in a hold and what were you hearing from the control room right so right now we're still in a stable replenish and basically what that means is we're still getting fuel into the tanks from the facility and the replenish cycles kind of meant to maintain uh topping off the tanks to their full capacity as some of that liquid does turn back to gas and we've been off that gas so we are in a stable replenish phase obviously some some of our engineers in the test control center are seeing some data that they don't like or might be um not exactly normal for them usually see um so those teams are off now kind of having sidebar conversations with each other to kind of determine what we need to do to go forward so i want to go back because all this might be obvious to you but we're trying to figure out where we are in this whole process we thought you know we might just come here and see the engines light up but that's not what happens so what happened up until this point and what are we waiting on now right so like we said you know we powered on the vehicle right over the last few days you know we've we've repaired all the systems we've tested all the systems um and then this morning we started tanking you know by uh filling both our liquid hydrogen and our liquid oxygen tanks with propellant and so that's really been the long process today i mean obviously we have to chill down our main propulsion system so all of our mechanical parts have to be chilled down to a certain temperature before we do a hot fire as well so you know right now they're obviously working through some some issues in that process um you know and as we learn more as they learn more we'll learn more um and so whenever we do hear audio we'll be able to give a better update so why don't you tell us a little bit about that process we're talking about chilling down the engines themselves right yeah all the engines and all the components inside the engine section which holds the engines have to be towed down to a certain temperature before you uh start the actual hot fire the ignition of the engines um and that's just because they're you know they're meant to operate under those cold cryo cryogenic temperatures and then obviously when you're hot firing the engines you start to heat up those parts right so you want to cool them down to a certain to a certain point and then obviously you'll heat them back up whenever you're firing the engines so say this hold is lifted um what will happen next so if when we do or when they talk about the hole and they lift it to continue operations you know we'll from that point we're at the point where we'll start to move into our t minus ten minute countdown um and that countdown kind of moves into our final sequence of activities uh to finalize right before we get to the actual hot fire so there's a whole set of activities we get um every few minutes and that'll kind of determine um like what time we will fire and then that we are actually going to fight will we be able to see anything during that t-minus 10 countdown or really not see anything until the last second yeah you'll probably see a few things and there's a few of those things you might be able to see right now the water suppression system is operating it's not operating at 100 right now because we're obviously not hot firing the engines but when we do you'll be pumping 100 000 gallons of water every 20 seconds um you know you'll be able to see obviously uh some of the engines gimbal which we're moving in a few degrees in different directions um and that'll be part of the the run up until we actually do activate each engine and you've told me this before off stage but i thought this was fascinating so we haven't had a test like this since the apollo era and there was something that happened then with a giant plume that actually made it start raining on everyone out here can you tell us that story yeah absolutely a lot of people don't realize is no we have our two propellants our liquid hydrogen and our liquid oxygen um you know and when you react with those two chemicals you know you're really just creating h2o so you're when you see the big plume coming out it's just water vapor right and you know since when we attested apollo you know back during the um saturn five program you know that the amount of water vapor coming out during that test is quite breathtaking and also it's so much that it can create clouds and sometimes rain clouds so sometimes you can get rained on from that all right so we can expect possible rain even though it's a beautiful cold but sunny day today what else can we expect to see right so you'll hear the test conductor audio and when we get into our t-minus 10-minute countdown so after that you'll hear you know every few minutes him come on come on the phone and say hey we're you know we're getting to this step and then you'll hear the engines rev up for the hot fire well alex thank you so much we are going to remain live i might be coming back to you in a minute in 10 minutes but we are really excited to have you here explaining everything to us and a reminder to everyone at home this is a live test we are still listening in for the control room teams as they review the data of the test up to this point they are having a conversation right now about the appropriate steps to move forward so alex we've had a little bit of a talk about those discussions again we're going to be coming back and forth to you and again a note to our viewers we're going to be hearing calls from the test conductor at regular intervals over the next 10 minutes or possibly more when we hear those call outs what we're going to do is we're going to pause and listen in i might turn to alex and and have you explain them to us again for right now what we're going to do is pause and listen for some of those so we can try to catch up with the rest of you and everyone in the control room find out what's going on and just take a step back and look at the beautiful sls on the test stand now cool so i'm going to answer some questions for you guys and one of them one of them confuses me a little bit this is from zachary russell hey tim uh first off thank you zachary that's very generous hope you get some got some good sleep last night after the scrub what do you think has made sls so successful over the years with a 99.95 success rate sls hasn't flown uh and i'm trying to think of what else that could be uh falcon 9 i i don't quite get what that honestly could be um i don't know anything that has a 99.95 falcon 9 is probably getting close to that but uh i don't know of anything that has a 99.5 percent sls has never flown so it it's 100 successful or zero percent successful uh either one um yeah i don't i don't quite know how to answer that um i did see a really uh sorry yeah uh i did see a really good question here from juan saying how do they build the sls body compared to the segments so the sls body has the world's largest friction stir welder uh down in mrs uh down in louisiana at the michoud facility they literally have basically giant sheets of aluminum and they do this giant seam weld up the middle of it um a friction stir world where you basically just take and you mash the the metal together with enough friction that it quite literally melts and becomes one and joins so it was um it was the tallest or it is the largest friction stir welder in the world so uh that's how they do it and then they they seam weld the bulkheads on and all that stuff and then stack a little ring separator between the different tanks uh so it's it's different than falcon heavier than uh it's different it's more like the falcon 9 the falcon end is something similar it's basically a long seam weld and then you kind of put on the bulkheads and stuff like that it's which is a little bit more traditional way of doing things the way starship does things the way that spacex is doing out here in south texas is they're making smaller rings with a single seam uh down to to make it a ring from a band of metal and then stacking those rings on top of each other so um yeah i think that's uh yeah i think i think that's that's the difference i hope that kind of answers your question there uh i i yeah uh from from squawk gaming i did get some good sleep last night after after the scrub i i don't know i don't know if we've seen a new published time yet from electron i don't think we have yet uh so likely not tonight but maybe we'll see that next attempt tomorrow or something so it'll be another another late night uh 26 dimensions that's awesome good luck uh yeah youtube making educational content is awesome um just make sure that you're double checking your work so that we're not spreading any misinformation you know it's extremely important to me that we get everything fact checked and we have um you know every time i post a video it goes through a lot of eyes before it goes to public a lot of pedantic eyes uh that's of course thanks to patreon supporters and the people on the discord channel hi discord uh who provide a ton of feedback they go over the scripts they go over the research they go step by step through all the videos that we make just to make sure that um you know there's some level of of uh you know fact checking to make sure that everything's right i think that should be the most important thing when you're making a video especially a video that's trying to teach stuff to people is make sure that it is factually accurate that's at least my values uh so i i hope that you're in the same boat there are 26 dimensions and and best of luck um awesome from capcom 1969 that's a that's an awesome name i like that this is from some belgian dude i ain't no expert so you can check pointy end up flamey and down things from belgium this is going to be hard this is going to be hard i can barely see the roundy end part of the upper bulkhead sticking out of the testing there on the left so you can see the red part the rocket is just to the left of that the core stage this is only the core stage remember there's not the side rocket boosters integrated onto this it's just the core stage at this time and you'll see it's it's orange because that is the color of the foam insulation that's sprayed on they don't paint it orange that's just the natural color they tried to paint the insulation white for the first two space shuttle missions we saw that same similar foam insulation sprayed on and then painted white but they realized that they they thought it might help the foam from falling off it didn't really do that and all it did was added like 400 kilograms of paint so they realized we could increase our payload mass by 400 kilograms if we just simply don't paint it so sls is going by that same tradition because it does have a lot of heritage from the space shuttle and although the tanks aren't actually in any way technically related to the space shuttle external fuel tanks they're very similar similar diameter um similar idea a lot of uh but quite literally everything the it's a different alloy different welding techniques different iso grid pattern different i mean it's in all reality it's it's a completely different tank than the external field tank and it's way bigger so i know it might look similar it might be easy to draw those conclusions and draw kind of that um the the lineage there but it's um it is kind of silly if you just say it's just a stretched external fuel tank because it is not that and i also want to remind people to in chat uh please keep your thoughts if you think nasa is a waste of money i'm sorry but factually you're just wrong uh don't forget if it wasn't for nasa we would not have spacex we would not have the falcon 9 we would not have the commercial crew program we would not have the commercial resupply program we would not have anything that you probably like in 21st century space flight is thanks to nasa um spacex has been able to stand on the shoulders of giants receives a lot of technical support a lot of technical background uh direct literally direct support on designs especially with crew dragon i mean nasa was with them every step of the way to double check their work offer expertise nasa i think nasa personally my opinion you'd know this if you've seen my sls video i think nasa should probably get away from designing building and operating rockets because i think that's a solved thing that's been done a long time now and it is commercially viable and there are opportunities for people to make profit in that and and and competitively bring the cost down um but of course uh you know nasa wants to eventually jim bridenstine says all the time wants to become a customer of many customers and i think sls is going to be the last rocket we see that that nasa designs and operates um and i think that's for now it helped us get over that gap it's going to help provide a super heavy lift launch option until there are commercial options but um i i think it's really silly when people just think that it's it's all or nothing it's if we cancel this it would actually hurt the commercial sector um in the oh and enable stctr 48 please the stage controller a countdown engine anomaly if not already enabled stctr 48 enabled in green copy that takes us to step 4.62 sequencer let's go ahead and perform the stage contour terminal count sequencer setup as follows please ensure the countdown timer is open cdt window is open and ensure your display test command criteria is also open uh tcc display is also open copy and we're going to give a sub step charlie if you would verifies on the terminal account sequencer that the isc has been initiated uh verifying initialization was successful coming and verify engine configuration is hot fire engine configuration is high fire and verified display configuration is hot fire display configuration is also high power for sub step 4 please record the version of the gls events table being used for today okay version hot fire version r 98 rails 8. did you copy that pq no sir engine configuration being used today is hot fire version r 98 real eight virgin high fire r98 rev a correct alpha copy that takes the topic hey is that alpha right hot fire r98 rev a copy okay that takes us to the top of page 328 for sub step five verify that the engine configuration is the desired version of the gls events table you just mentioned and verify the display configuration is also the desired version of the gls event stable also confirmed okay under your tcs engine status verify activate sequencer is selected and displayed tc is activated copy that okay for the note there she says we'll automatically stop but the t-minus 10-minute whole point h-e-a if you're on 16 step 4.63 is yours copy that ntc's is he in 16. getting a second here's come to 16. go for an cc mcc can you please verify and or perform a helium spin start panel activation for dop 11 to provide one thousand to thirteen hundred psig to the cafes roger that it is set up they're doing what they are doing here it's been starting not food strapping these it is complete i did not realize that i'll explain [Music] 21 1707. copy 016 21 1707. copy into ntc the next step is yours per step 4.64 please roger that and uh in btc let's go ahead and prepare this the deflector for test configuration and he's on the phone but he's been coordinating with the water plant and he'll get the bypasses open in just a moment copy that and then ntc per our discussion we will uh keep the main we will maintain the current uh timeline in the current countdown time for our discussion roger sounds good tell us the timeline for those asking no those are not solid rocket boosters on the other stand on the right on this side of that red thing um i don't know what those are but they're not solid rocket beasts they test the solid rocket boosters in utah horizontally and that has been completely qualified so the solid rocket boosters are ready okay cool we will we do have an ish clock they do look like the srbs but i just don't think they are i have to see another shot of it but um they do look like it but we will see i i don't think so because like i said they do test those horizontally um are they one second srbs well let's see if we get another shot from there we'll we'll take a look we'll keep our eyes open oh here we go let's i'm actually my guess would be i don't know i mean just white cylinders does not mean that they're srps yeah and i don't exactly know why what purpose you'd have of putting them over there like i said they test them horizontally um they don't test them on the stand i'm sure it's nothing to do i i don't think those are srbs i don't know why they would be um yeah they could be water tanks that's actually um or yeah some form of prop tank i i don't have the answers to that um okay let's let's keep uh reading some questions here uh igor asks why is it called a green run i'm not a native speaker that's actually a great question i don't honestly know exactly why they call it a green run either uh it's pretty unique to uh i've only heard that in terms of the sls program personally myself but um yeah i i actually have no idea why they exactly called a green run other than uh this one is they're calling the hot fire test sometimes i think the green one was technically just when they filled it up and got it ready making sure that all things are green maybe um but yeah that's that's a good question all right so uh this is from sam ward hey tim thanks for all you do any idea what spacex's plan is for gravity simulation for the mars mission months of zero g then landing in a gravity environment seems like it could be a problem um i i've talked about a decent amount i don't think it's as big of an issue as people think it's a six month transit to mars hot here at stennis space center the teams are in a hold but we are still well within our window for today's test still and i am lucky to have alex here with me we've heard a lot of conversations from the control room over the past few minutes i heard hot fire a lot i heard water a few times you're the expert what were you hearing so um the test conductor instructed everyone to go back into our terminal countdown sequence and so at this point we are about 30 minutes away from the hot fire according to the terminal countdown sequence um some of the other things they're kind of talking about um they're turning on the water deflectors right for the engine test so there's certain configurations that we need to put each thing on the stand or thing on the ground in a certain configuration for that hot fire so um they're you know they're supplying a certain amount of pressure to different components inside the engine section and like we said turning on those water deflectors um retracting some of the stands around those engines really to prepare the stand and the core stage four hot fire we heard at least two people talking is that right what were those people what are those positions back there right so the test conductor is basically relaying information to individuals working the console and each of those console workers are either going through test criteria right so we have test commit criteria for each part of the test you know they're looking at different things that are happening with the stand they may be controlling the water going onto the stand so he is in direct communication with each person that is working each individual component on the stand so you'll hear them giving out a lot of commands of things that need to go according to our countdown sequence and where are they they're even closer than we are right and they're in a safe place i hope right absolutely they're in a test a test control center closer to the stand i mean that stand is wired has wires running all the way to the test control center and in the test control center they can see everything going on they can see all the cameras and they're each sitting at console and they'll be able to make decisions real time so you know they're sitting in a in a building it's fully blast proof right has giant blast doors closed in there so um you know the team's working really hard you know there's a lot of people in there looking at a lot of stuff um so you know they're obviously working through it and uh working towards hot fire and those two people we heard are they sitting close to each other are they hearing each other kind of like we're hearing them now so the test conductor audio um you know he's he's in he's in one part inside the test control room so you know he's he's talking on a in a regular voice kind of like we are um and then he could be communicating with someone on the far end of the room or he could be communicating with someone sitting right next to him but that's all over the audio kind of like we're hearing so is this considered normal when you think about testing a rocket yeah absolutely you know that there's a ton of people who play a part in the actual test of a rocket or in the launch of a rocket right so you have to have a proper way of communicating proper one-way or two-way channels um so that the correct people can be heard at the correct time so i think you know that's happening we might be familiar with um you know how we all the time to remind people when watching spacex do things that these are all tests and spacex in particular uh they have a ton of holds and a ton of you know weights and when's it going to happen when's it going to happen when's it going to happen because everything's just so up in the air with with spacex's timeline because they're just doing milestone-based things like whenever it's done just go do it uh whenever the next thing's done it's just the when it's done thing which is how i always if people ask when my next video is coming out i'm always like when it's done uh and that's kind of how spacex operates but but nasa and this program they're a lot more uh you know they they write out the procedures write out all the stuff but at the end of the day it still is a test and they still are there they could be scrubs it could be holds they just want to make sure everything is done right so they're going to be kind of pausing on things uh and yeah it's absolutely understandable i do want to remind you guys that they are one miles 1.6 kilometers away from this test which is insane that you can actually be that close to four rs25s running at full power uh the press even um i i saw a tweet from brady ken kennington uh kenniston i don't i never know how to say his caniston yeah not kennington uh who is a member of nasa's space flight and they gave out complimentary earplugs at where they are because it's going to be potentially so loud so that's super cool uh i i hope that they have really good audio of this because it's going to be awesome so i wanted to read a few more you guys comments here from sir um aaron says nasa is massively underfunded as a social worker i can tell you private privatization never makes things better every time quality goes down and price goes up i have to disagree that it never gets better with privatization i think there can be a blend i think we're seeing the fruits of the labor of privatization uh with at least fixed price contracting versus cost plus and using commercial partners in bidding wars we see that with boeing versus spacex and you know ula versus spacex for the commercial crew program okay cool so 30 three minutes from now basically all right we can handle that we can handle that i'll i'll answer some more questions from you guys so um but i think there's a healthy blend i think there's some things that the government can do to help uh make sure that things happen and then to also make sure that monopolies don't run away i think there's a balance there i think there's also a balance of letting private companies innovate and and compete i think there's definitely a fair balance between those twos and it's tricky to find that balance sometimes because um you kind of have to make that compromise occasionally so yeah uh from razenba are these engines unmounted from flown space shuttles yes quite literally the first four um sls boosters will all every single one of them will quite literally just use rs25s from space shuttles so i think that's really cool a part of me though wishes you know i think these deserve to be in a museum because they're flown hardware from space shuttles uh and now they're just going to be rotting at the bottom of the ocean another part of me that kind of goes like then again they were built to fly like let's fly these babies it'd be a shame to not fly them so i would maybe wish they'd hold over at you know four or something and then and then fly the rest or something but i i'm a little bit between those two so uh i'm a conflicted person i guess all right let's keep reading you guys your questions um some belgium said friction stir welding does not melt the aluminum i how does it bond if does it just get them both really soft i feel like you'd have to melt is that it doesn't melt yeah did it just get some really soft okay so i guess you just get them really really really soft and join them and then where they're really soft together but um yeah i uh sorry that i that i yeah for some reason i always just assume that friction stir welding does at some point at least on a molecular level melt and that's how they are able to be fused but that kind of makes sense too but not to my brain so maybe i have to look into that more what was that oh yeah oh i should re-watch that yes dustin from smart everyday has an awesome video and they do talk about friction stir welding in that when he visited the ula factory definitely worth watching jay hawkins says pretty sure the 99.5 successor was referring to the rs-25 engines yes specifically during their use as uh as the ssme that's that's probably exactly what he meant and i think i actually saw him uh reply again yeah sorry for the rs25 sorry you are you are correct um and and we'll we'll bring up zach's follow-up to this too sorry zach that i misunderstood or couldn't figure that out but what so back to the what made them so so reliable i don't know anything specific other than they would always get torn down and completely gone over with a fine-tooth comb don't forget we had some very close near-miss misses a one-time an injector pintle they had these little these little injector faces popped out of an rs-25 and completely went through and punctured three of the cooling channel tubes inside the the rs-25 had literally one more uh failed it likely would have led to the loss of that mission so rs25s are very reliable and um part of that's just probably because they're so expensive and so over engineered uh but i don't know what specific things lead to that one of the fun facts about the rs25 because it is it is fuel rich um stage combustion cycle the the pump the hydrogen pump is is huge it has to be two-stage or multi-stage hydrogen pump to get the hydrogen because it's so sparse needs to get that up to operational pressures uh and shoved inside the engine but at some point there is actually um there is actually a pre-burner that is attached to the pump side so they share a common bearing and if you get any of that liquid oxygen that is that is firing inside of that turbine any of that if that seeps down into the or at least no that'd be on the on the oxygen side because it's fuel rich yeah so if you have a fuel rich pre-burner and it uh down into the oxygen pump you will have a massive explosion so they have to purge that bearing with higher pressure helium so they quite literally just force helium into this bearing so it's so high so if the bearing starts to leak it leaks an inert gas into either the oxygen pump or in inside of that that fuel-rich pre-burner and that's something that i would have never thought of it's stuff like that just makes me so appreciative of the geniuses that design these things that they actually put the bearing inside of a jacket that's pressurized with high pressure helium that's even higher pressure than the operating pressures of the engine that is wild if you ask me that's stuff that i just love thinking about that i love that there's solutions to those kind of big big big problems so yeah the rs25 is an awesome engine i did want to point out too that the guy was mentioning the f1 engine doing a test fire um or the saturn v when the saturn v did a test fire it was running on rp1 and and liquid oxygen so keralox and that's what the falcon 9 runs on that's what the soyuz runs on that's what a lot of rocket engines run on um and he mentioned that it had a lot of water vapor that was likely because of the water deluge system so that engine unless they were doing the s the s2 the stage two um the s2 was hydrogen and it used j2 engines so the s2 and the upper stage the s4b of the saturn v all did run on hydrogen but the first stage if they were testifying the first stage i would find it maybe fairly unlikely that it was raining uh raining because of clouds from the engines alone but maybe from the water deluge system because when you are spraying water to suppress the sound uh as that goes up into the air it quite literally just forms clouds you're making clouds but uh in the case of the f1s and the saturn v there's also a good amount of co2 in that cloud too so a little bit different than this this will quite literally be pure uh h2o and and oxygen so or hydrogen and oxygen and just making pure water um that's kind of one of the fun things about um about the rs25s is they run they're they're just making water which i think is cool um rob sande says are you following apollo 50th on twitter yeah they do live tweets at the apollo program i think that's really cool i think that's really fun and i do follow them um ian donnelly says is that an srb next to the corresponding testing on the other side of the red thing so we've been we were talking about that a little bit ago i personally don't know why there would be any segment of an srb there it doesn't make any sense to me um it could be it wouldn't be sls's srp i just that doesn't make sense they test those out in utah but okay they're tanks yep they're tanks so that's that solves it we have the answer um yeah so good but good eye does look familiar i know why you would think that i was questioning it myself too but they are just tanks um captain spaceship how's it going um how long do you think it'll be before we start considering fission engines again like the nerva project i think it's being considered right now jim breidenstein has written uh and the trump administration actually did start writing into law more use and potential research back into nuclear uh nuclear power which is extremely important in deep space missions but also uh nuclear drives again like like nerva like uh thermal nuclear propulsion which is it i think is awesome i think that is huge i think that's a huge win i would love to see that i am going to do a video about nerva and the uh and the engines that the soviet union built that were better than the nervous engines in my opinion so yeah um payham is this a documentary chronicles uh i don't even quite know what that means but no this is me watching nasa test fire their core stage with you guys uh yeah i i actually intentionally did not sign up to be press at this event because at the time it was going to be conflicting with sn8 test flight and then the two schedules totally flip-flopped and went all over the place and uh now i wish i had signed up for it although i would have been panicking with with sn9 with starship s9 although now that's definitely not going to be flying uh today that's for sure or who even knows when it's going to be doing anything in the future too so yeah uh pj wenmeyer says will we see multiple providers sls spacex blue origin going to the moon or will only one be going for artemis uh if not for artemis would spacex do any moon landings for mar for mars training these are good questions pj i definitely talk about that quite a bit in the um in not only sls versus starship video that i have that's linked in the description but i also have the other video uh artemis versus apollo and we talk about how everything will work for flying humans and this is the part three of the sls video that we're working on that i've already shot a little bit for flying humans to the moon as of this exact moment the most realistic the definitely the safest and the most thought out and the only real way to get humans out to the moon right now is sls period um we'll talk about it we'll go over all of the options of what could replace sls and orion getting humans to the moon we'll go over could anything else launch orion or are there other options other vehicles it just really is not as easy as you think i know people like why don't they just use falcon heavy and then you realize oh falcon heavy's not rated for crew and then you know what they use delta iv heavy delta iv heavy is not rated for crew oh why don't they just launch the crew on this by the time you actually go through all the solutions you realize right now where we're at with what is human rated and what is ready to go sls is the only thing that can get humans to the moon period uh and that is just the reality now things like that could change but it's not arbitrary to human rate something that's something we will be talking about in that video is what does it take to human rate something you know for a little bit the uh the delta was looked at as a consideration for being flown in the 90s with humans and uh you know i i've been reading up on that paper on what are the considerations to fly humans and what changes do you have to make to your hardware in order to make it safe for human space flight sls from day one was designed around flying humans falcon heavy is not it is not currently and has no plans to be flying humans you know they were originally going to fly two people around the moon on falcon heavy and a dragon that all got scrapped for starship and elon said one of the big reasons is they're not we're not pursuing human certification for falcon heavy because it's too far it's it's too hard to do um especially retroactively now if you design it from the ground up in that way that'd be one thing but it's a lot harder there are tangible certifications and measures you have to take to get something to be crew rated it is not arbitrary bob brink thank you for your membership i appreciate that um peter danilov says do you think 3d printing will become a bigger part of rocket manufacturing if a complex engine ie raptor is fully 3d printed would performance and stability improve what about a whole rocket body with tanks embedded peter it sounds like you are talking about relativity space who is working on exactly that they're quite literally working on 3d printing the entire rocket to be dozens of parts um i personally have my doubts about being able to do you know intricate bearings and really high uh or low tolerance parts you know like like bearings and the turbines inside of rocket engines spin at like 30 000 rpm they have to be perfect and machined perfectly i i can't imagine 3d printing working for some of those of course 3d printing additive manufacturing things work uh really really really well for these intricate channels and cooling channels and and weird ways that you need to make fuel flow through a jacket or something it works brilliant brilliantly for that compared to cnc machining which does have hard limits um but that that being said um there probably is a lot more that can be 3d printed and that's definitely exactly what relativity space is exploring as we speak so yeah um okay this test is expected within an hour not the hour within an hour uh so jim brian said the nasa administrator jim branson teams are evaluating pressurization data before they are ready to proceed the test is expected within an hour okay so it does say um test testing within an hour my face is kind of covering that up sorry uh it is kind of hard to do that in this setup though so all right you want to slide me i don't want to slide me down it is weird okay well we'll keep it for now i'll read it to you guys uh the angry astronaut says uh come on orange rocket show me something uh i i think we're all ready for this we are all ready to see sls do something uh and do something awesome so uh this is a big milestone for them if this works out they they put it on a barge and they ship it to kennedy space center so it can be integrated inside the vehicle assembly building and then rolled out to the pad so we will see this is from uh pedro says hey tim thank you very much pedro i appreciate you saying hi and same with uh john ellis saying green run a full duration test with untested stage so that's just uh yeah people were kind of talking about that uh same with joshua here the term green refers to new hardware that will work together or power the stage and run referring to operating all the components together simultaneously for the first time so that makes sense so green would be new hardware um and run would be running it so there you go that that's makes sense so sky frog is a member thank you very much same with uh and thank you from old jensen let's see this is from 26 dimensions do you think russia's technique for dealing with rocket exhaust on launch is better than nasa um also thanks for shouting me out you're welcome 26 dimensions um i think that there's so what uh to be very specific here what what russia ended up well this former soviet union decided to do uh initially was make uh in order to improve the efficiency and the performance of rocket engines they they developed a closed cycle rocket engine they started developing that in the 50s in the freaking 50s they made the s150 400 and uh it was it was oxygen-rich closed cycle now oxygen rich means that you have left over you're you're running your pre-burner and you're sorry you're so rocket engines of course uh most high performance rocket engines use stage combustion which is where you um where you where you run basically you spin a turbine which spins pumps just like a turbocharger in a car you run hot gas or you run gas through something really really high pressure high energy you spin up a turbine like i said 30 000 rpm and that will then spin your pumps and those pumps are what suck the uh the fuel and the in the oxidizer out of the end or out of the stage out of the booster and then enforce it into the combustion chamber and um that that turbine if it's an open cycle you will have the turbine just dumping exhaust overboard that's what the united states did for a long time until this engine the rs25 was the first operational closed cycle engine the united states flew on the space shuttle they did it fuel rich and the reason for that is you need to cool uh anything you're blasting at a turbine wheel has to be relatively cold relatively obviously cool enough to not melt your turbine and all the all the little blades on that turbine and stuff so it has to be cool enough for that turbine to survive so in order to cool down your exhaust you can either run it oxygen-rich or you can run it fuel rich you just get the ratios far enough away from their stoichiometric ratio which is where they burn really really really hot like maximum temperature they so they change the ratio enough to give it enough energy to still spin the thing fast enough but also to keep it cool so it's just a nice they find that balance they find that that that that portion together where they're going to be spraying the hot uh burned fuel from a pre-burner or gas generator at this turbine and not melted so that's your your spin it as fast as you can to get all the power you need out of the engine and make it not melt those are your two those are your two uh thresholds that you cannot cross those are your limiting factors um the soviet union decided to do closed cycle using oxygen rich and what that means is you're blasting oxygen rich which oxygen which which searing hot oxygen wants to melt anything like it's really really really hard anything that's remotely organic i mean tables or like anything that it touches will just melt so the the metallurgy or the the machine or the metal science behind making the engine not melt under uh oxygen-rich stage combustion was thought to be impossible by the united states the united states has developed these engines the rs25 which are fuel rich and fuel rich has its own limitations i talk about this a lot in that raptor engine video that i make so if you have questions about the different engine cycle types definitely watch the raptor engine video but um but as far as running fuel rich the problems here is if you use rp1 like like like uh most of the united states rocket engines have done before like the f1 and uh well redstone i guess not not all of them but rp1 is the common one if you run carbon or fuel rich with rp1 you end up making a bunch of soot and that can clog your engine up so they decided to use hydrogen because hydrogen burns clean like i said the only byproduct when you're burning hydrogen and oxygen is water vapor so you can you can just shoot that any time you want uh if it's fuel rich and you're just literally you're making water and you have a little bit of extra hydrogen and it's not a big deal so i don't think anyone is better so back to the original question do i think russia's technique for dealing with rocket exhaust on launch is better than nasa's um i don't think it's there's a better or worse they're both different techniques for increasing performance i think the soviet union knocked it out of the park early on they developed a full flow engine even in the late 60s that would have been by all metrics basically better than the f1 by a lot except that it did run on hypergolic fuels which i don't think is a very good thing so there's your little there's you're way too long of an answer on on which closed cycles are better or worse i don't think there's ever there's no such thing as better or worse in aerospace really there's compromises there's pros and cons to quite literally everything so again if you have questions about that definitely watch is spacex's raptor engine the king of rocket engines pull up in your queue right now get it ready on youtube because i promise you you will understand the cycle types and and how they work and why they need to work and et cetera et cetera and and give you appreciation for why something like the the raptor engine which is on starship is so insane and why it's so awesome and why i can't believe it works because it almost shouldn't work all right um oh was he dealing with was he talking about flame trenches and not dealing with rocket sauce i went on a tangent about closed cycle and and 26 dimensions may have been talking about flame trenches totally different thing oh totally different thing uh yeah in that case uh i don't again i don't think there's a better i i do think a water daily system is important but who knows oh well you learned something about closed closed captioning not do i haven't available them necessarily blurring out sometimes when they're doing a panorama things because of parallax and parallax shift the things that are that are close as you're doing a panorama like that can just get so shifted that it's not worth trying to include that data um so the last time someone say when say curiosity is doing a panoramic image it'll tilt its camera and it has wide angle cameras so it's tilting like this and the things at the bottom will have these weird convergence and if you're focusing on something far away and if it's moving like this there can be parallax there where the things just don't line up cleanly at the bottom so they probably just yeah just kind of ignore that you know uh it looks gross and sloppy and so they just blur it i i've seen plenty of of images though where they do not blur the rover but that is a good question so yeah uh real quick in our in our discord channel uh chick uh chikashi hi chikashi i don't recall seeing you in discord thank you for joining chicassi um says what's wrong with seal number 44 raptor why was it removed from s9 we don't necessarily know um they apparently aren't exactly happy with the performance of the engines after those static fires so they're taking some out the two of them are coming out and two of them two new ones are coming back in that's the spacex way test break repeat until hopefully you get the results you're looking for that's that's the way they do things so um yeah and if you guys want to join our awesome discord community uh become a think consider becoming a patreon supporter by going to patreon.com everydayastronaut where you will gain access to our discord channel some exclusive live streams and just an awesome community where uh we'll get some extra behind-the-scenes things too so like i said if you if you do want to help uh you know see the scripts early and things like that that we work on uh you can do that by becoming a patreon supporter you also can preview videos early and see if you can catch any errors we use it as a final like get eyeballs on this make sure that things are correct um but it gives you a chance to see some of the work behind the scenes so you know what's going on um oh let's listen in here quick here at stennis space center the teams are in a hold but we are still well within our window for today's test and we did just get an update and so we've got our expert here alex a core stage engineer alex what did we just hear from the control room so our test conductor's kind of discussing um a path forward obviously with our test um right now we're about the t minus 10 minute mark so we're in a holding pattern for that t minus 10. they're going to go around continue to monitor our fuel levels you know our propellant how much propellant we have not only in the core stage itself but also we have on reserve um and then over the next 10 to 15 minutes they'll kind of have a discussion um about you know our propellant reserves the path forward and whether we're going to go into that t minus 10 minute countdown sequence okay so we heard about one hold earlier when we started taking our pauses and listening in this sounds like we're in a different hold is that right right so the t minus tin hold is really the last major milestone before we get into a lot of the major operations that we use um to get into the actual hot fire so you know starting at the team minus 10 mark we every minute we have a lot of very important tasks that we'll be doing up until hot fire okay so let's walk through those what else will we expect to hear once we hit t minus 10 and then what are some of the calls we can expect to listen in on and expect um going forward right so once we start t minus 10 count we'll have a lot of software that gets initiated to to start the the hot fire right now some of that's automated some of it's not um you know we'll move into activation of some of our major propulsion components um we'll turn on our campus at about the four minute mark and those are used to kind of steer our engines with our hydraulic system um from there we'll start certain uh purges inside the engine section and then we'll move into internal power within the rocket so it's fully powering itself and then we'll start the engine sequence and a reminder this is a live show we are listening into the control room it's very important that alex doesn't just keep talking giving us interesting answers the whole time because he needs to listen in to be able to digest what we're hearing so he can tell us what's going on and we can get more of an update so we're going to do that now we're going to take another pause we're going to sit back with you just like you are at home and we're going to watch the test stand we're going to have alex listen into the control room so we can come back and find out when we can watch the uh sls core stage hot fire test we'll be right back okay and we will keep answering some of you guys questions here so uh this is from dario asking do they block the engine gimbals the things that actually steer the rocket engines the rocket engines themselves and in turn that helps steer the rocket um do they block the engine cables to prevent torque to the stand or they do they test those as well so before they fire they will actually gimble them and do a thing to make sure that the tvc the thrust vector control which is what does the gimbling make sure that all the hydraulics and everything are uh and are operating as normal they're basically treating this and if i recall right i think they actually are doing some gambling during the test to kind of follow an uh a normal a nominal ascent uh profile so we actually should see a little bit and because this thing's bolted in so many places the test stand can handle those that torque can handle those extra forces so that is a good question from uh from jan or jan sorry i don't know which one hey tim why is super heavy not in use no customer super heavy's not in use because super heavy is still in development super heavy is very much in development we will see many tests of kind of sub-scale sub-performance boosters before we get anywhere near an orbital mission uh with starship super heavy booster uh starship isn't in use for customers it's not because there's no customers because the whole program is still in development period um so um that's that's why it's not there's no customers it's just that it's it's being worked on and being made as we speak uh musical wolves uh lots of car stuff came from nasa that's actually i i'm a huge come on i'm a pretty big car nut and i saw another comment coming up about about koenigsegg so i'm excited to answer that uh but yeah that that actually makes a lot of sense there's a lot of uh if you think about if you like cars and you like turbos and you like internal combustion engines or even these days if you like you know motors and uh high-powered electric engines and stuff like that too or motors more specifically uh yeah i think i think the ultimate version of that is rocket engines right i mean rocket engines are pushing all those limits and just taking it all up to the next level so i think that's where i came from i was a big i used to turn tune turbo cars i really enjoyed uh internal combustion engines these days my my love for that has turned to the next level which is seeing rocket engines and uh and then i've kind of myself personally gone more towards evs i really like high performance evs but uh but that's just kind of my own personal journey i still have uh certain fondness for sure for internal combustion car engines as well so uh paul says an oracle appears in front of you and answers we'll answer one question with absolute certainty what do you ask what how i have no idea that's insane that's too powerful i would have to think on that for if i answered if i had that right now and i just came up with an answer i would be regretting it for the rest of my life because i'm sure it'd be the dumbest thing i could ever ask uh wow i i i don't know i have no idea i haven't no i don't even know where to begin and i feel like you'd be irresponsible i i mean an easy one would be say something like what stock could i buy today that would make me the most money in five years or something and if they knew the answer i mean that would be an easy one if you want to be rich or something you know i i but i don't know i i do not know uh i don't know i period i'm sorry paul that's that's too deep you you hurt me the oracle abducting doctor says the oracle's not going to sit and wait on their answer from nabil says uh thanks for the beautiful quality merch awesome my two-year-old daughter loved her t-shirt for christmas and asked to put it on immediately what niche will new glenn fill versus starship will new glenn be able to land on moon mars so um quite literally any rocket basically any orbital rocket can take something to the moon or mars i mean even rocket labs electron that tiny little thing can send stuff to to the moon it just has to be tiny stuff right it scales linearly or pretty linearly with the rocket um so uh as far as what niche will new glenn fill i think new glenn is a step in the right direction it's it might you know if it doesn't get online before starship is really truly active and and really ready to fly customers i think it'll have a it'll sign a lot of contracts because it will be a uh it'll offer some benefits over falcon heavy it'll definitely have some benefits over say delta iv heavy um it's going to be very competitive and i think it's going to be in some ways it's higher performance than falcon heavy even so it has a bigger payload fairing there's some certain things that people can do there you can share rides because you can stack payloads in that large fairing even going out to geostationary transfer orbit and stuff so the niche is that it's a it's quite far along in development i would argue that new glenn is further along and more ready more closer to orbit uh operational orbit launches orbital launches than starship is the problem is one's kind of going what feels linear in its development and its progress and that's new gland and blue origin um i think they're with i think we're right about a year away from seeing that thing fly orbitally and then from there on i think we'll just be seeing them fly quite often um starship on the other hand is doing this and predicting where we're at in that tale going up is virtually impossible for anybody including elon elon gets it wrong all the time all the time i mean he said just the other day that the raptors will take just a couple hours to swap out we're now 48 hours later basically since they started swapping raptors and they're still not done swapping raptors um it's just hard to predict timelines on things but spacex is clearly accelerating their progress so it's just really hard to tell where we're at and when starship saying the first day we should play bingo we should do a high stakes bingo of when will be the day that starship goes orbital for the first time successfully and i'll bet you no i mean i guess if we had thousands and thousands of people doing it perhaps then we could uh you know maybe have a winner but i feel like that that would be crazy uh if someone could discord let's figure that out that would actually be fun thing to do um and do do sls and new glenn do uh all of them it'd be fun to have a bingo card for all you know do a do a high stakes bingo type of thing like that for when uh sls will fly when a bunch of rockets will fly that'd be really really fun uh closest without going over abducting tires i don't know i think you can go over i just think whoever's closest period i think we need a winner we need a definitive winner someone that nailed that date the angry astronaut rs25 magnus magnificent engines never failed every time we used them no there was one that shut down in flight um but it didn't abort to orbit um we also had another one almost shut down in flight and uh but that one didn't so it did fail on on one launch kind of almost failed on another one so um but yeah goes on to say that uh and now we let them burn up every launch tragic yes but i think that this is the last of the of the dinosaurs in this in this regard so yeah uh david willis go sls david glad to see you here uh this is your day my my friend this is your big day david is uh maybe the ultimate sls fan and i think there's nothing wrong with it i think that david's become david i think for a little while you may have been hostile towards starship progress and stuff but i think that you maybe weren't hostile towards starship products you're more hostile towards starship fans and the fact that they would no matter what poo poo everything sls and i think david has become a a big fan of of i think space flight and uh but still the ultimate fan of sls and i think that's good i think sls needs some needs some positive cheerleading because like i said i am honestly excited about this i do want to see this see this thing fly i do want to see it fly enough times to fulfill its ultimate mission and help us transition into a commercial era again watch my video about sls versus starship or artemis versus the apollo program and you'll get all my thoughts on on the sls rocket but meanwhile orange rocket good enough for now uh shiny rocket really good in the near future that's that's my ultimate my ultimate uh thing so uh west you're stirring the pieces of soft metal together that's crazy that you can do that with ster friction stir welding and not have to ever have them melt at some point to me that just seems like at some point on some level they have to melt but maybe i just don't even know enough about it period but thank you west i love i love learning i love i'll be wrong every time as long as people teach me that i'm wrong so that i can uh be sure that i'm factually accurate in the future so thank you guys for always helping me with things and yeah it just makes everything better uh cody says do you think this is nasa's last chance to really be a contender in spaceflight absolutely not no way um this they aren't trying to be a contender in spaceflight this was the only option on the table when this program started there were no commercial options it wasn't a thing if you presented say falcon 9 as a legitimate option or if you were presenting starship 10 years ago on the table you would have been laughed out of the room only now is that even becoming remotely kind of a possibility we're kind of seeing it as this will happen eventually this they're willing to happen i'm staring at it right now i believe that starship will fly will fly successfully there will be a lot of booms and explosions and setbacks but they're going to elon just forces things to to work and happen and that's the way that's the spacex way if you'd proposed that 10 years ago when sls started it would have been inconceivable and you would have been laughed out of the room um now they aren't trying to be a contender they were just quite literally trying to make sure that we had a super heavy lift vehicle capable of getting humans to the moon in the safest manner possible and safest doesn't just mean human rating it also means safest as far as a budget goes and i know that we're all we all get uh up in arms when we think about how expensive sls is um but the grand scheme is a lot cheaper than the apollo program a lot cheaper than saturn v and uh and realistically because it has uh a budget working alongside with congress and politically motivated it survived multiple administration changes it survived the crossover from the obama obama administration through the trump administration that's important with nasa they're more at the mercy of politics than they are their own their own desires so many times so i think yeah i think this is not their last chance to be a contender in space flight this is probably just their last time they're going to own operate design and build a rocket and i think they're okay with that and i think their goal going forward is to be more research development science do all the things kind of behind the scenes that aren't necessarily profitable right provide support for launch providers of hey here's some technical data that we have on this we have these test stands let's partner in these ways because again they are government funded they don't need to compete with these um and we're seeing that today with all of the human landing systems we're seeing nasa change and i think it's for the better they're they don't need to design operate and build um a rocket so um yeah hope uh hopefully that uh that helps answer the questions and this goes with that david willis friendly reminder that the rockets that will send humans to the moon are not wasted in any way that's a hundred percent right i i would would you say that the the f1 engines and the the saturn v was wasted i would i would probably be very angry and upset with you if you told me that to my face in person that you thought the f1 f1s were wasting away at the bottom of the ocean and it's a shame that they are thrown away the fact of the matter is they did the most impressive things ever period ever uh and one of the biggest bookmarks in human history was getting humans onto the surface of the moon that was their goal reusing it was not the goal same with sls ls sls is designed to safely charter humans to and from the moon using orion it requires other launch vehicles to get them to the surface of the moon but to deliver humans safely to the moon is still vital and obviously a huge portion of landing on the moon is getting to the moon in the first place so i absolutely right david uh friendly reminder that rockets that send humans to the moon are not wasteful in any way good call from david what are the pros and cons of hydrogen versus methanous fuels again we do talk about that a lot and the raptor engine is the raptor engine the king of rocket engines but the biggest thing for hydrogen is it has more potential energy it's a lighter weight molecule can be accelerated faster um it has more potential for for peak temperature it has more potential for performance period which is why we often see specific impulses these engines this the specific impulse of the rs25 is insane that's kind of like the fuel economy if you will um you can only expect about 25 percent increase uh for a similar engine of similar manners to to have 25 percent uh isp or specific impulse using hydrogen versus using methane now the problem with hydrogen is that it's it's again so sparse it's really hard to deal with you have to chill it at an extremely low temperatures awfully close to get liquid hydrogen has to be awfully close to absolute zero which means your tanks that you that you um load in the tanks that hold the fuel have to have a lot of insulation they have to be chilled down uh in order to not have that hydrogen boil off that liquid hydrogen wants to boil off with ambient temperature and and just become gaseous hydrogen then they vent that out um liquid methane is really close in operational temperature to liquid oxygen which is of course there's always going to be liquid oxygen and then say liquid methane or liquid oxygen and liquid hydrogen so liquid methane is a lot warmer it stays at a liquid in a lot warmer state it's a lot cheaper in the grand scheme of things to make hydrogen versus make methane and burn both of those in the atmosphere making hydrogen unless you're using electrolysis which basically no one does they use steam reforming it's it actually pollutes a lot and it's expensive so if you are fueling a rocket although the rocket itself might be extremely green the way you develop and make that fuel is actually pretty bad for the environment because of how much co2 you make using steam reforming so so methane can actually be a cleaner alternative fuel in that sense um but it's just operationally easier to make but it's not as efficient but it's it's a perfect goldilocks between rp1 and hydrogen so we are seeing it being used a lot in the 21st century which is really cool um almost all new rockets tend to use methane bill says according to nasa's website they are tanks for testifying the rs-68 oh here we go you've heard me say this a few times but we are so happy you're still here with us you are watching nasa's green run hot fire test here at stennis space center in mississippi the teams are still in a hold and we are still within today's window for the test we do have an update so i'm excited again to have alex cagnola here with us alex what's happening right now so right now our teams are still kind of doing some preps before we move into our t-minus 10-minute count there's a lot of just individual preps you have to do on the stand individual components you know certain configurations we have to put everything in before we actually do perform that hot fire you know they're going around they're polling uh all of our program management and our and our chief engineers to see um you know you know are we good to go on you know or we need to move on um you know we're also monitoring other things you know we're monitoring how much propellant we have in the tanks how much propellant we have on reserve on the barges to to use for the hot fire um and then just as we work through those issues we'll hear more information as we get closer so you said monitoring how much propellant we have on the tanks why is that important at this step right so this whole time before we go into hot fire we're in a phase called replenish phase and i know we kind of talked about that but um you know that fuel is very very cold and you know in the outside right now it's not as cold right and so you know constantly that fuel is being converted into gas and then vented out of the tanks and then so the entire time we're in a phase called replenish where we're constantly pumping a little bit of fuel back into the tanks to make sure it's at max capacity and we've said at the beginning of this show that this hot fire test can last up to eight minutes what i understand is we can learn a lot in just the first few minutes is that right right you know a lot of the engineering data we're looking to get um really comes in the first 250 seconds so you know whenever we do initiate hot fire you know we're going to be gambling our engines a little bit right so we'll be moving the engines and it's in a certain pattern that'll kind of mirror what we might expect during launch um we know we'll be throttling down the engines for a while then we might throttle them back up you know there's there's a lot of things that we're going to try out and most of those things will be in the first 250 seconds obviously when we want to go for the full eight minutes that we will see during launch um but you know i think we'll get a lot of really useful data in those first few minutes so you said gimbaling the engines moving them a little bit it's not like a nascar turn or anything like that we'll be seeing the engines right just small movements yeah it's very very small movements and you might not even notice you know it's only a few degrees in each way you know and you might see a couple of them move the same time or you might not but that few degrees can can really change your trajectory of your rocket when you do launch it so it's important to be able to test that uh here at stennis um while we're hot firing and not just when the engines are just sitting there right it's a lot different when you have all that thrust coming out the bottom of the rocket um than it is just testing it without it so i'd love for you to take a second with me and just take a look back we can see a little bit of white steam smoke coming out can you describe that for us right so what you're kind of seeing right now is the max deflectors the water deflectors on the flame ramp right so we kind of talked about how much water they're pumping you know 110 000 gallons every 20 minutes or so so it's a lot you know it's a lot of water coming out um you know and roughly 32 000 holes on that flame ramp that are all pump and water so you know obviously you're going to see a lot of mist before the hot fire and they'll actually even increase the amount of water coming up when we do get closer as well and those are called flame buckets am i right yeah that's right it's a flame bucket you know you might even see some flame coming out of there whenever we do light up all four engines so it'll be very exciting um you know and you know obviously all the safety systems are in place to take care of that when we do do hot fire okay and again we are still in a hold in some way this is a planned hold we've got different versions of holds throughout the test and as we get more information we're going to come back we still have alex here with us i'm not going to let him leave you're going to stay mic'd into your chair right here because we want your expertise on what's going on and as soon as we have more information from the control room we're going to come right back to you for now we are going to take a step back and look at the test stand just like you are at home and we'll be back in a few minutes all right well back to answering guys this question so uh all right gabriel says oh wait i don't know if i finished that one um according to nasa's website this is from bill bill i wanted to thank you again for finding the answers on nasa's website those tanks are for test firing the rs68 and the r68 is what powers the delta iv and delta iv heavyweight now just the delta iv heavy because the delta form medium has been retired um that is a kind of a i'll say a sibling-ish not really uh but a sibling-ish to the rs25 was considered an alternative for a little bit um it is definitely an expendable variant of the rs25 but it really that's a the fact that it runs on hydrogen is about the only thing that really shares in common uh because it is open cycle and it has an ablative nozzle which is really interesting so you'll notice that the rs68 when it fires on a delta iv heavy although it's running on hydrogen which normally just produces steam and is basically completely clear uh not the the r68 will appear really bright orange and that's because it's quite literally ablating carbon off of the nozzle and then when carbon uh lights it shines really bright so you're seeing this bright afterburning effect uh with the carbon ablating from the nozzles they're literally burning through the nozzle they'll make it extra thick and burn through it and when you burn through it it ablates away and takes heat with it what these engines do is called regenerative cooling so they're quite literally flowing fuel through the walls of the engine and that nozzle the whole engine the whole engine being the combustion chamber the throat and then the nozzle there are tubes running through this engine so when we see a shot like this look at the very bottom you can see tiny little if this wasn't in 720 thanks nasa you'd see some vertical stripes pretty clearly inside the nozzle engine or if you go see one at a museum or something you'll see you'll clearly see that and those are literally channels for fuel to flow up and down into uh cooling the walls of the rocket engine as it's as it's firing then those get pumped into the main combustion chamber um all at high pressure so um big difference between the rs68 and the rs25 is that ablative versus regeneratively cooled nozzle gabriel says chase uh have you seen the chasing the moon documentary on pbs that's fantastic i don't remember seeing chasing the moon i feel like i've seen i've seen just about everything that comes out or i tried to but i don't remember if i've seen chasing the moon um it's fantastic also do you think the european upper stage sls-1b will be ready for artemis three or four what uh what will it be used for so that's a really good question um let's see so the chasing sorry as far as the european upper stage what will be used for will be used still in the same manner but the cool thing about using the upper stage is they can send another approximately 10 tons metric tons to the moon so 22 000 pounds to the moon on a transistor injection along with orion so you could put portions of your lunar lander you could pour portions of gateway inside that and eventually the the thought is that the european upper stage will could be cheaper than the current inter-cryogenic propulsion stage which i don't understand how because it will use four rl10s versus the one rl10 of the current upper stage on sls um but yeah i think um okay cool so this is this is a good little bit thank you um acacia and discord apparently we're going to hear bells at 15 minutes at t minus 15. so we'll pay attention to that and see if and at which time we will change our clock so we know that t t minus within an hour is quite arbitrary because that's constantly sliding every second of every minute of every hour it means nothing but that's what they gave us so we don't really have a better way of of trying to uh give you more accurate time besides that we are just waiting for this thing to test fire which it will do up to between four and eight minutes hopefully would be a successful test but they are hopefully trying to do the full eight minutes from mateo says why again sls is human rated i just tuned in greeting from the freezy finland tim awesome oh so why again is sls rated because they're using a lot of heritage components they're using uh in order to rate something human rated you have to have a higher factor of margin uh like stress margins and everything you have to have a high factor of say you design something that you know say it needs to hold 100 kilograms before it breaks uh you know your your safety margin needs to be higher like a normal rocket might be able to do 1.3 times that so basically hold 130 kilograms before it begins to break uh and human rating requires something like 1.5 1.6 factor a safety margin and as far as um then also having flown a lot of this hardware has flown in other iterations the rs25 of course has flown the um just stress rating everything to human certification is is a way that they that they design it into the rocket from the get-go um yeah so that's it's and spacex for instance has has actually had to push back um quite a bit against some of that traditional way of doing things when they were able to certify the falcon 9 because a lot of the ways they were certifying wasn't that traditional over engineering but it's more through showing through brute force hey we've flown this this many times and it works um there's been kind of some some back and forth on some of that stuff uh reevaluating the best way to certify and you can certify through through multiple ways you can certify through through um proving it by doing all up tests you can certify like that's the difference between the abort tests of boeing and spacex we saw boeing not do an in-flight abort test they certified it by showing how it could on on paper basically and how it could through their their validations on the ground um which in some ways is probably could be more expensive than just for spacex they just stuck it on a used falcon 9 booster and just let the thing fly and that was probably a cheaper way for spacex to prove that their in-flight abort system can work um so yeah sls is was cert is certified by um by designing from the get-go um heritage parts over engineering parts and then going through processes to make sure the parts on there are actually ready for people so uh we are go to proceed with terminal count said jim bryant at 4 15 so maybe we are within about 10 minutes here we go here we go that's great the terminal account only lasted 10 minutes so i think um i think we're going to be see it in about 10 minutes meanwhile i'll answer some more questions before they get online uh pascal says do i think snn sn9 will fly or will they just continue with sn10 do you know what went wrong with the raptor engines uh greetings from switzerland i think sn9 will fly they put new raptors on it already um if they wanted to scrap it beforehand they would have done it probably when they tipped it over in the high bay um i think it'll fly i'm staying here until it does uh it's not fun it's not it's really expensive to be sitting here uh i'm missing home already but uh but i'm here for sn9 i'm i'm not gonna miss it um unless it's like i mean i i i don't think it'll be a month let's hope it's not a month because i don't know how easy i can afford a month but uh we'll figure it out so here here we go they're gonna bring it back update uh in a few minutes we are now inside terminal count and again i'm not the expert here we've got alex cagnola with us is going to explain what that means and how did we get to this point right so the test conductor just came on the auto and on the audio and alerted us that we're about nine minutes away actually so we'll be getting some pretty regular updates here um you know we will be hearing some activation of some different components on the rocket before the hot fire i mean obviously there's a lot of steps that we'll be hearing um going into the actual hot fire with things like like we talked about cap activation you know move to internal power you know there's any kind of audio that might slow down the terminal count they'll kind of come on the air and tell us that too um but right now we are in that final sequence that lasts you know eight and a half to eight minutes um so we're going to sit back and kind of listen for the updates from the test conductor and this wasn't one person's decision this is a full group that has to make the decision that we are ready to keep going right everybody one second what i do want to remind everyone now is that you're actually able to hear the control room audio just like we are so what we are going to try to do is when the test conductor starts talking i'm going to rudely cut alex off in the middle of what he's talking about and try to make sure that we can all listen and give him enough time to understand that call so we just missed one again this is a live show but i want to get back to how we got to this decision and again it's not just one person right you know that goes back to you know we have a great team working on all the engineering issues you know and then obviously you know they kind of come up with a story about what's going on and they present that in the best way possible to our program management and to you know those who who are the big decision makers and so every time we have a big milestone like this we have to pull the whole board you know everyone brings up their concerns um or if they think you know going forward what they think and then do a go no go pull and it sounds like everyone wants to go um so we're moving forward terminal count okay and again you can hear some of that test conductor audio i'm sure you couldn't hear that one because you were talking giving us a great explanation conductor say a few things things like that so when when they uh when they when they say t minus seven minutes mark ours should be at six minutes at that point because at that exact minute it'll be six minutes 59 seconds so we're our ish clock is kind of giving you just an estimate but we could probably get into a real actual zero zero with this or we'll try to get you guys a real accurate countdown clock uh and remove the ish from our own our own countdown so all right let's listen up again two minutes on my mark we just heard about six minutes was that right that is six minutes away so they're going to start really um because we're still having a lot more calls on the audio we're gonna hear we might even hear some things being turned on inside inside the core stage so um you know obviously we'll start talking less as we hear more audio comes through okay sure what will those things sound like uh so you'll hear tcc you know um you know more and more calls they'll be talking to more in the control of individuals who'll be talking to people yes sir looks like somebody would interpret uh yeah nobody else should have the tcs gui if you have it open please close it at this time so right they're just working through some small things between all the monitors you know they're they're opening and closing certain things that need to be closed inside the rocky you know from the stand um you know there's going to completely secure the stand with everything that needs to be done before the hot fire and really it's just the final preps before we do um in the shiite engine start okay again you are all hearing what we're hearing we're pausing whenever the test conductor is speaking or other people uh in the control center are speaking because we're trying to learn what's happening to the russians it sounds like about five minutes away on their mark again remind us who's the one in our ear what's that role so that's our green run test conductor and he's kind of been um the one in control of all the green run test cases not just this one being at this point so he has a great working relationship um with all those that are on the test team and so um obviously right now we're in t minus five minutes um you know so it'll be a lot of activation going up until we do hot fire so you know like we said caffu spin up um you know move to internal power purge sequence and then we'll move okay copy that and we'll uh wait till we get to the hold at t minus uh 440. we're in the whole time we're in the go and if you want to go ahead and use that pre-plan deal h let's uh go to manual mode and try to dial in the lead build speed if this is the right time can you break down what we just heard so they're moving into some some final sequencing obviously you can see um on the flame bucket they've now initiated max water flow into the flame buckets you'll be seeing a lot more come on we do have two minutes 35 seconds for the hold so two minutes 35 seconds on the on before the one minute and 40 hold from what i understand um so obviously that one minute 40 hold will be the last little timer um before we do start uh start up the engine so it's very exciting i can hear everyone around us getting excited this is great and what we're going to make sure we do is we have to make sure we're all being safe here reset that whenever you get ready we are at the one minute and 30 seconds in the whole timer okay if you're in the band go ahead and reset mps 17. so we're going to go ahead and take a step back we're going to put our ear protection on uh so we'll be moving into internal power um and again putting our ear protection on listening in from here on out and observing this major milestone on america's return to the moon with artemis the sequencer sequence are activated okay resolving on my mark three two one and we're counting down sequencer is counting we might be back up four minutes so we're gonna have to move our clock we'll be listening in we might have got a little confused with the hole there they're talking about a hold timer and how long of opportunity they could hold uh we're gonna move our clock when they they might give us the t-minus four minutes any second here and then in which case we will punch it back in this is a rough estimate if we're wrong but hopefully we'll give us some kind of update coming up on t minus four minutes on my mark got that dialed in for you guys oh they're going for it guys who's ready i'm i'm honestly really excited for this i four rs25s i guess have never been fired up together simultaneously this is a big milestone just a good step we want progress so yeah this is this is a good thing we are all you know team space here let's be excited for some progress let's hope for the best for this uh again this test could last anywhere between to for it to be successful they're saying um i think they're saying 200 wait were they saying 200 seconds uh they wanted like 240 seconds or six minutes of data um the full duration would be eight uh or not yeah four minutes of data sorry and um and the full duration would be eight minutes so we're hoping to see at least four minutes so minus three minutes on my mark mark perfect absolutely perfect awesome guys look at all that water that's crazy that is crazy this is this is down in stennis space center in mississippi you can tell by the way it looks like mississippi i don't know oh this is awesome guys this is the first time a super heavy lift launcher will be firing up in a long long time a super heavy lift launcher hasn't really flown since uh the space shuttle because the falcon heavy is not by definition well wait 50 times over [ __ ] heavy could actually be super heavy if they expended it but still this thing is is awesome i'm giving up in team eyes two minutes on my mark mark awesome bait 215 this is just cool located 45 minutes from this test i wonder if you'll be able to hear it from 45 bait please get back to us chat pay attention to bait 215 uh if one this happens if bait from 45 minutes away uh drive time i assume is able to hear and i'll get to the rest of you guys's questions here after this uh we'll talk about what we saw and we will answer guys questions but uh man i don't even mark all right i've just decided this is finally getting close this is awesome a little nervous this has to go well let's go team space baby on my mark mark mark i'm actually who's ready for this give me again for all personnel report that you're ready to go pea okay aea h-e-a o-r-e-a go ntc we're gonna go so we might see a little gimbal right we're an alf of the engines they're going for it guys wow that's a lot of water getting ready that is there for sound suppression uh to protect the rocket itself it absorbs a lot of sound energy here we go these are these are ropeys these are just to make sure there's no extra hydrogen it's not part of the ignition sequence here we go they're firing up and we're in the press count start around yeah please continue on to your system and uh we're associating control all right 25 seconds oh look at all that water vapor again that is no pollution there that's literally just water vapor quite literally clouds because it's just hydrogen and oxygen and then making a lot of steam we're still running we got four good engines right four good engines we want to hear that wow the passes through at 60. 60 personnel uh shutdown looks like uh let's all go to page 656. it's all together though guys the vehicle is still in one piece this is the important part not a great sign it though like it said tvc violation that'd be thrust vector control so maybe there's some kind of issue with the gambling which is an easy thing to solve right now it's going to be post top five postcard fired or shut down securing operations in page 656. that does take us to the last page there on page 632 ar1 if you want to step 4.241 please verify corsair generation ones and four have shut down for that step and we have a safe engine shutdown we are post shutdown standby engines one through four hmm remember this exact vehicle is going to be flying for artemis one within a year so we need to see this engine test go successfully in order to make that happen it has to work um this is not ideal but it is still standing and that's really the important part this vehicle is still there we just saw the core stage of sls fire up of course we also heard some test conductor come in so we want to go straight to alex alex can you please describe to us first of all what we saw and then what we heard yeah absolutely obviously we had a very successful initiation of the engines um you know our the beginning of our thrust profile there when we were firing for the first minute or so um you know we obviously are getting some really good data coming through um you know but like we said earlier you know this is a test you know we have test commit criteria and we have certain boundaries that we have to keep all the opera all the operations under so you know we really are trying to make sure that you know everything's operating properly and safely so you know the test team was kind of seeing some data that they might not like and so obviously you know our engines were shut down ahead of the eight-minute scheduled time frame but we do have a lot of good data to go look at and hopefully i know we can move on from here and maybe get you know see what's going to go on further so i was looking at your face when that started lighting up and that was incredible we saw the cloud forming we both saw rainbows just forming right over side just how did it feel in those first few seconds yeah it's amazing you know it never really gets old that feeling that you get you know in your chest or you know seeing you know just how powerful those rockets are when they're testing so obviously you know it was an awesome thing to see you know and you know i can't wait to get the core stage to kennedy and get ready for launch and you told us you know over eight minutes we might have had tons and tons terabytes worth of data but we already have data just from right now what are they going to do with that right away right and so just like all of our other green run tests you know our we have teams that are going to go and break down that data and kind of see what we're seeing in our profiles right so and that all goes into the you know the profile that we'll use for launch eventually kennedy so i mean obviously there's a lot of things to look at the data you know we kind of talked about you know over the span of our green run testing we have roughly 800 uh terabytes of data and that's a lot of data you know we're talking about it's it's hard to grasp how much data that is so you know we'll obviously take the time to dig through everything um and then obviously have a path forward from there and i know it happened really fast but can you tell us what the people were talking about that we could hear from the test conductor in that audio right so after we did engine initiation you know they're kind of going through and monitoring everything right so obviously once we are actually firing the engines we have to look at you know all of our engine engine readings when it comes to temperatures you know how they're reacting how they're moving and all that stuff we were just getting into our gimbal profiling test which is you know moving the engines around um right before we terminated the hot fire so we're obviously going to have a lot of good data to look at great thank you alex i'm so glad you're here and so as the engineers gather data from today we look ahead to the next steps this core stage will be lifted out of the b2 test stand and refurbished to patch up that orange foam insulation then the team will load it onto our pegasus barge about as long as a football field to make a six-day journey from the gulf of mexico to our kennedy space center on florida's atlantic coast there it will be stacked in the iconic vehicle assembly building with other elements of the sls rocket including the twin solid rocket boosters which our teams have already begun stacking on the mobile launcher the core stage will join the boosters and then be stacked with the upper stage and then the orion spacecraft with the launch abort system on top all of this work putting us on track to roll out to launch pad 39b for a liftoff later this year on artemis one we are going to pause again and just talk about what we just experienced the stage was rattling that we're on here we saw everybody with their so i'm very confused they're making it sound like they're just going to ship it anyway without getting through any of the gimbal profile which i i think that's i'm i'm guessing it's too early to tell i think nasa will review this data uh see what exactly triggered it um see whether and and weigh out the pros and cons of whether or not they they think they need to redo this test get through those gimbal profiles and again the gimbal are the things those those nozzles can actually steer uh specifically on the space shuttle they could they could steer up to 12.5 degrees uh raptor can can steer up to 15 degrees which is crazy both of those are crazy 12 12 degrees is insane and we'll see we'll see if they need to redo that i don't know if they're going a full 12.5 degrees on sls but on the space shuttle they could they could gimble that amount so we will see if if they take it down and and do the patchwork to the insulation because sometimes from the foam insulation falls off from the shaking and some of that's okay um i i can't believe they're talking like they might just go ship it that would actually be um yeah that gingerman ginger man 512 in our discord did bring up a good point it did kind of sound like they were just going to the next section in the script period not necessarily um being dynamic with the situation at hand so man i don't know i don't know that at least like i said the things we know is the vehicle is standing and in good condition and hopefully repairable or they can not necessarily repair but just address the issue sometimes it's literally a software thing sometimes it could be like a valve uh was showing an improper thing or maybe even you know a wrong configuration or something so you never know and hopefully they will be able to figure that out pretty quickly so uh and then and either redo the test or if they think that they got the data they need to confidently fly the vehicle then they're probably going to do that if it was a simple like oh look at this we literally could have just uh had this one valve read this thing or whatever and the gimbals would have been fine um but at this point when it's on the test stand you want to be very conservative with those numbers you don't want to do anything that you think might damage the vehicle so yeah there we go from connor the angry astronaut put out a great video yesterday on nuclear uh thermal rocket engines and the rolls-royce uksa collab on that i'll have to check that out because i i do want to do a video on on nuclear engines i think that they hold a lot of value and i would like to see them i'm kind of blocking this poor poor lady's face i am sorry about that um whoops can you do the shrinky to do or am i already strengthened i'm already strengthened there we go what are they saying here down at kennedy undergoing assembly and the spacecraft for artemis 3 is also being manufactured right now at michoud in our hometown of new orleans so that wraps it up for us here today after a major milestone on america's return of astronauts to the lunar surface a successful test of the core stage of the space launch system rocket up next we'll be replaying the test and we will have a post-test briefing in about two hours on nasa television we invite you to follow all of our progress online at nasa.gov artemis program or join the conversation online with at nasa artemis and at nasa underscore sls thank you so much alex for being with here and being our expert tonight thank you to the administrator jim bradenstein and astronaut tracy caldwell dyson and most of all thank you for joining us and go artemis all right guys we've got a lot of things to answer for you guys a lot of questions to answer uh we'll let this play in the background until it until it wraps and then we'll we'll just go full screen answer more you guys questions because we have quite a few here and i'm way behind so i'm going to try and kind of rush through these a little bit here um so that we're not sitting here all night uh but like i said the good thing is definitely tune in uh pay attention to jim bridenstine's twitter nasa's twitter tune into the press conference afterwards we'll hopefully learn more about whether or not they feel like they need to redo this test or how to what degree of a success it was uh the fact that they committed and ran a full minute definitely tells them probably a good amount of data like i said maybe it's something that they they know confidently um we'll be okay but uh we don't know and hopefully nasa does uh jk fresco says off topic but lasers can be used to to heat uh can lasers can be used to heat the atmosphere as propellant any thought on how far away this technology is thanks great channel well jk the big thing is you have to harness the expansion of the acceleration of something just because you heat something up doesn't mean that you're going to create propulsion from it in order to create propulsion you have to uh basically the way a rocket engine works is you're converting pressure into workable thrust and you do that by accelerating it so you're taking that pressure you're putting it through a nozzle you're first constricting it and then once you're constricting it at the throat that's where it hits supersonic speeds after supersonic speeds in order to keep accelerated you actually do expand it out um it kind of goes backwards at post supersonic speeds um so uh i you know i i don't know how exactly you'd harness that and how that would necessarily be any more efficient or different than just a regular rocket engine but um i haven't really thought about that but you you would have to you'd have to harness it in some way just heating up something behind you would just be heating up something behind you it wouldn't be providing any workable thrust of course lasers can be used though to provide a slight push on like a uh a sail you know a solar sail or something like that so there are options nolan uh barnett will crew dragon ever go to gateway or could it be modified for tli so translucent injection and uh trans earth injection so back from there so as far as that goes i don't necessarily know right off hand there were talks of it for a little bit but i think that it got canceled basically i do not think there is currently plans to have crew dragon ever leave low earth orbit um we'll be exploring that in the what could replace uh the what can replace sls and orion video that will hopefully be sometime early this year uh radrez do you think uh interplanetary spaceships like the one in the martian movie uh is and where uh like the one in the martian movie is a viable option a spacecraft that you can attach to send a send vehicle to etc do you think it's even a good idea thanks um as far as a good idea that's literally what the gateway is proposed to do that's what what nasa's gateway in that near retro-linear halo orbit is kind of proposing it's not going it stays relatively in its destination around the moon but the idea is you kind of dock to it you prepare missions you do all this stuff and then you go down to the surface in a smaller vehicle i think it is a valid idea i think you buzz aldrin had a book all about called the aldrin cycler where you literally keep one spacecraft cycling or multiple spacecrafts kind of on this ongoing cycle between the earth and mars you could even do it with earth and moon you can do these cycling missions where you dock a small spacecraft up to it offload and then you have all the space to have leisure activities or more science or whatever or backups and all these things and then you send a smaller unit down to the surface of whatever body you're going to explore so um yes i do think it is a viable a viable option and i do think it's a good idea good question radrez uh nick says uh how likely would it be for a blue origin and spacex juncture possibly they both established their products i.e new glennis starship i i don't want that i think it's a wonderful competition i think that's um a really two of the richest the the two richest people in the entire world are fighting over space dominance and we're all winning because of it um they're both working to outperform each other uh make better performing rockets cheaper and and do it ahead of each other so if they joined uh we see that lack of competition already everywhere else in the world i think it's a bad thing i think competition uh can can keep both people motivated and and pushing forward so yeah um that's my opinion though from zach uh hems mbc sure hey i've been watching you since 2018 love your videos well thank you very much zach hopefully depending on how all these millions of lives lately it's just been live stream city and then uh preparing for starship hopefully soon i can get back home and get back to shooting videos but in the meantime we're shooting a lot of content for starship because it is history in the making it's hard to not just focus on this and then we'll get back to the videos um long term someday so um that's that is what i still love to do i love to make those long form videos the ones that we can break down topics really deep and provide uh visuals for you guys so that you can hopefully learn along with me and i i love to do that but um it's hard it's it's quite literally impossible to do down here with with all the stuff we try to do as well so i'm adam uh this is the the comment like an hour ago that i was excited to read on air koenigsegg 3d prints they're variable vein turbos for their cars which spin at 40 000 rpm 30 40 000 plus rpm you're absolutely right but the parts that actually are doing the spinning like the bearings the bearing so you the turbine housing itself and the compressor wheel housing and stuff like that that can be 3d printed but as far as the actual moving parts like the bearings which are normally you know either some kind of ball bearing and still uh variable vane turbo is like what it would have been in the um what's what's cool about variable vane turbo is like we're in the 911 starting in the 90s you can change the pitch on them and they actually have their own uh oil that that is completely sealed off and you don't have to have it cycling through so it basically has a different lubricant for for the variable vane turbo that does not need uh positive pressure and a flowing tap off basically um so there is you can 3d print certain parts and and definitely some of the the channels and things like that but you're not going to be able to print the like you're not printing the bearing in that 3d process you're 3d printing parts same with a rocket you're not going to be 3d printing the entire thing you know like just here's the bottom of the rocky to start printing and 3d print the entire thing there's going to be parts you quite literally have to install like bearings and really uh really really really um high precision or low tolerant parts that have to be manufactured in other ways and then then added into the the final assembly so um let's see sorry i read that tweet as uh official source but um kane the red fox hey tim uh with nasa having that nuclear engine law coming into play soon what do you think of the feasibility of using the orion nuclear engine orion nuclear engine i don't think is a good idea orion nuclear engine was the idea that you literally light nuclear bombs and just kind of capture it like uh imagine having a bowl and then just dropping a bomb into the bowl and just having it blow up and propel you i think that's a terrible idea i think thermal nuclear rockets would be a good step in the right direction without all the craziness of dropping nuclear bombs out the back of your rocket to propel you so yeah uh p.a nelson says uh what about vulcan for humans to the moon vulcan we'll look into that well of course look at that vulcan will be human rated um i believe from the get-go because of the way it's they design and engineer it uh we'll we'll look at the performance numbers of that and we will put that in that video as well vulcan is absolutely uh a potential there so alexander says thanks for all you do tim and giving my daughter and i some awesome things to watch well thank you very much alexander thanks for saying hi and and hello to your daughter thanks for watching with your family that means a lot jack graham what's the purpose for the rings on rocket engines i'm guessing it's something to do with cooling your structure both you're absolutely right so um for these particular rockets you'll see again you'll see there's cooling channels going vertically through the nozzle and through the chamber uh then there's ring stiffeners because they're using the way that they made the rs25 is not really the way that we're doing things now like the way spacex mills channels into copper and then and then has another metal on top of it it's a little bit different um the rs25 is still a little bit more old-school using quite literally like brazing channels together tubes together and then there's uh ring stiffeners around them so yeah hopefully that uh and some of them do have channels for for where the coolant comes into so hopefully that yeah that answers scott holloway um seems the other side of the stand could have the test vehicle for launcher to test their new engines oh that uh that could have been but i think we figured out that they're they're tank supported for rs68s but um yeah the launcher is is out there michoud so that would be uh i just don't know if they'd be at that big of a stand but yeah that's a good call thomas duncan says how does spacex plan to deal with radiation on its way to mars um i don't know it's it's it is an issue but the big thing is literally if you the biggest thing you need between you and specifically the sun is the biggest form of uh radiation when you're in deep space is to point your your engines or have a bunch of mass in between you and the sun so if you point your engines and face those at the sun you can block a lot of radiation environment and shield the the the crew from that radiation um also you can put water you can mitigate radiation a lot just by having mass by having propellant in between you and the sun by having uh you know water uh your fecal matter if necessary things like that you can literally have a pool shield is what i'm trying to say um there's a lot of things that you can do to mitigate that and i i i think for a six month journey the the radiation even if you're relatively unshielded likely would not be uh it would be bad but it wouldn't be like a total deal breaker i think someone compared the amount of radiation uh that you'd receive would be similar to smoking a pack a day which yes that's not good uh but people do that and they are still alive so it's kind of that whole like if we're going to mars to explore there's going to be some risks and maybe some people will be willing to risk uh risk it to that degree um but yeah um hold on here real quick oh yes someone i did see someone ask really quick you you are right i am wearing the normal shirt if you guys want to support me and help me do what i do uh consider going to everydayastronaut.com slash shop i do have the normal shirt 10 off today by using coupon code launch day although this wasn't a launch it was a test fire i should have a test fire day by using coupon code launch day and go to everydayastronaut.com shop and clicking on normal here andrew can you pull that up real quick yes by going to everydayastronaut.com clicking on normal here anything in the normal collection so the hat and the normal shirt is 10 off today by using coupon code launcher that helps me continue to be down here for you guys anything you do in this shop helps me stay down here and continue to uh to provide coverage for you guys specifically with sn9 right now obviously i would normally be doing these things at home but yeah shop around if you guys want to help me do what i do that's everydayastronaut.com and uh and yeah the other way you can do the other way you can help is by becoming a patreon supporter by going to patreon.com everydayastronaut um of course that means the world to me as well you can join our awesome discord channel so uh thank you so much to all my patrons i promise you guys will be very excited about what we're working on down here uh i i will tell you guys more about it as soon as as soon as we have some stuff figured out so patrons stand by um thank you so much for your support uh back to some more questions um from own hi i never know how to say your name on high but uh thank you for always saying hi absolutely stoked to see shuttle hardware fly again also the money you send to to mars the studio oh also money to send you to mars the studio thank you yes that's what we're talking about here um yes i i've decided if i do i'm working on trying to figure out a solution for a studio b so we can keep stuff set up down here um and and not just waste time setting gear up all the time because it's it takes a long time having a permanent solution would be a lot better and if we do that we will probably name the studio mars because that makes sense since everyone wants to send me to mars and be like okay yeah send me to my studio so thank you very much i do appreciate that a lot um lost code 707 i'm procrastinating i'm getting work getting to work this afternoon just to see this test glad you are covering it uh thanks for all your hard work well thank you so much lost coast i do appreciate that hopefully now you can get back to work uh charles o'connor what's my favorite dinosaur i'd have to say angliosaurus or stegosaurus both are awesome because they bash stuff with their tail how can that not be awesome uh the real damn item i'm doing my phd in 3d printing technology right now the future will be 3d printing but some parts are finished with a milling process good call the real tim that's you're absolutely right yep uh which i would hope the person with the phd in the subject matter i will gladly listen to you uh you are absolutely right um let's see this is from 26 dimensions last tips any tips for editing videos absolutely i have one favorite tip that has saved me so much time um i when i read my scripts i'm reading through a teleprompter right and i'll read them oftentimes three or four times and when i think i know i nailed the take i clap twice that way i see that waveform directly in the editing software so for me for premiere i actually see those double claps they'll peak the signal i can literally just look at the double claps find the wave swarms before that know that that's my take and basically just edit from there and go boop okay that's my take boop that's my take that has saved me so much time and now it's saving andrew a lot of time when he does those initial dialogue cuts you still do watch all of them yeah huh he says he takes my pick only about eighty percent of the time but i with the way i said i literally just go to the double clicks uh pounded him but it did give me um i did get it did give me a good sense of what i thought was my best take so um oh the other thing and for me in premiere one of the things that i like to do i don't know if andrew does this but i do stack timelines i'll make um because you know you can have a timeline window open we could also have another timeline open so i'll have all of the dialogues strung out it might be four hours of dialogue literally four or five hours and then i slice it out and drop it into a new timeline so that i'm never having to scroll around on on the timeline and go back and forth i can literally just kind of scroll slowly linearly drop it in scroll line like i never have to move and find my place again so um yeah all right so from stefan saying um according to nasa the term green refers to yes we did go over that thank you very much stefan and i appreciate all of you guys uh correcting me on that that is uh that's what i i love about you guys uh roberta says wanted to support you since sn8 broadcast thank you for all your coverage uh for our community well thank you very much roberta i i just love this stuff and i'm just really glad that you guys are all here to watch along with me learn along with me and just experience awesome things together because that's that's something to get excited about uh clifford thank you so much for the pair i appreciate that peter says not melt hot oxygen will oxidize burn almost everything but it but is the oxygen rich pre-burner the reason the russian engines can't be is it the reason the russian engines can't be reused i mean the plumbing resists the hot oxygen for a limited uh time to go to orbit um i don't know they don't forget they were looking at trying to reuse the uh the rd-170s from inergia and uh those were closed cycle oxygen rich and they're basically uh a doubled up version of the rd-180 so they thought they could reuse that so i don't think it has much to do with that i think it's just uh they didn't really look too seriously into um [Music] i don't think they really were looking too seriously into reusing anything else though otherwise so i don't i don't think that's much to do with the engines i think it just has to look with reuse and whole so um all right so this is from will uh thanks for the coverage you do great work thank you will thanks for saying hi uh from w4w raker uh re-rover images they are usually stitched for multiple high-res photos and they don't image the rover bits saving bandwidth for important data that makes a lot of sense too that absolutely makes sense because there's very limited bandwidth on mars and there's only certain times with certain passes when say that mars reconnaissance orbiter is overhead where you can get a high data bandwidth and high data speeds and still not that high there's three there's there's basically three different modes of of data that they can send um a low main a low gain a high gain and a uh an omnidirectional antenna and they're all uh really slow some of them ridiculously slow so we need starlink on mars and that would help that a lot uh stefan crawford says tim my hydrogen toyota uh myra is directly influenced by nasa i feel like i'm piloting a road-based space shuttle you're exactly right i mean there's quite literally a copv a composite overlap pressure vessel inside of a toyota mira so that's exactly right there's high pressure hydrogen inside your car and i think that's absolutely wild that's a very space-esque thing to have in your car uh cameron says as an aside from the car comment a lot of the aftermarket fiberglass car parts especially for classic cars are based out of and and handmade and titus titusville from people who worked in the space program see i that's cool i did not realize that that's actually really cool i'm hanalok hi so what happened if the tube actually blew up as in the tube if the rocket blew up it'd be very very very very bad and they would be about a year and a half behind scheduled to get the next rocket the next core stage out to the test stand so um it did not and we are thankful for that um this is from liberium says hey tim which human launch systems do you believe will be the safest for astronauts my vote is dynetics but i'm interested in what you think um i don't i don't know if i see any as a particular safer bet than the others um the high elevation i think a lot of people are stuck on the high elevation of say starship and the high elevation of say um the human landing system are the i mean sorry the the national teams lander uh they're both very elevated with starship being like really elevated like 10 stories off the ground from the surface of the moon you have to take an elevator down i'm not that worried about that i think those are easy things to solve um as far as safety and redundancy they all i'm sure they all have been certified to the same degree so i don't know if there's anyone that would be better than the other in that regards but dynetics looks so low so long that it does seem like a nice safe bet but um i'm not the one that makes those decisions i definitely think spacex would be the best bang for the buck though you're basically landing the a moon base on the moon with your first starship so yeah ali says or ali al alazama says any plans to get back into cars maybe a car channel i just don't have time i i don't even have enough time to run my channel as much as i want to including all the help we're getting uh i i just don't have time for that i i love cars i don't have any desire to do car content though um but i still do love cars but it's just for my own personal enjoyment so i gotta focus on this while i can so um all right this is from uh milan says uh hi tim if super heavy's grid fins are going to be made out of steel why do falcon 9's have to be made out of titanium is weight the only issue uh i think super heavy grid fins are going to be made out of titanium i believe elon's mentioned that they will be by far because the currently the falcon 9's grid fins are the largest uh potentially the largest forged forged or something single piece of titanium uh super heavies will be like four or five times bigger than that at least so yeah um so hang on jeff faust is reporting i do want to read this real quick jeff faust is reporting uh from the nasa tv replay a controller says that they got an mcf on engine four but we're still running we've got four good engines right another controller says the engines continue to run for another 10 to 15 seconds before shutdown i don't actually know what mcf is oh major component failure ooh interesting okay so maybe we'll learn more about that at the at the press conference i'm guessing there is a pretty major set back then so we will see uh t-bone says hi tim currently reading up on a plan uh to turn uh the ov-101 enterprise into a space station what are your thoughts um i don't necessarily have any thoughts i i don't quite know uh turning the ov 101 enterprise into a space station um i i don't know i don't know if that makes any sense but uh i would be interested to read that too so i could actually give you more of a because i don't know what that what that actually entails so um yeah oh scott says that the grid fins are welded steel i i'm not sure though hmm well hopefully we'll we'll find out uh warston says uh 25 000 viewers and only 3.6 likes let's help 10 with the algorithm well thank you very much warston uh i appreciate that that sentiment i think that does kind of help the algorithm so if you feel so inclined hit the like button i think that does help and if you're not subscribed please do it all it all does help so thank you um elijah you are awesome sn8 crashed because of low pressure in the methane header tank but why was the pressure low what are your thoughts thanks um it sounds like they're switching from uh gaseous so the starship is actually is doing the same thing that sls is doing which is autogenous pressurization i think sls is doing our trojan pressurization david willis if you're still in chat please let me know but i feel like you know the rs25 had a tap off that would that would pressurize the the external fuel tank of the space shuttle i'm assuming it uses the same thing for sls um yeah and i'm getting a lot of people um let's see sorry i'm trying to read up on some of the things here okay yeah we'll learn more about in the press press conference i'm gonna get through this so we can so i can listen to that on my own and you guys can all watch it on your own so um but the they're switching over temporarily at least in the methane tank maybe in the both header tanks to using helium again to backfill pressure uh it could be because of phase change problems or some kind of sloshing issue that caused a breach or some kind of valve configuration or something it obviously was an easy fix for them because they addressed the issue and had the vehicle on the pad in like two weeks uh sn9 that is so i don't have the exact details but i wouldn't be surprised if it has something specifically to do with using autogenous pressurization and something they're going to have to address long term um alex alec says hey tim uh what do you think what do you think we'll see fly as the first official mission starship cargo or starship crude 100 cargo they'll be flying cargo for a long time i i don't know when we'll first see i don't know if we'll see people flying on starship um from launch without an abort system still i i don't believe that's a good idea until it's flown hundreds of times without without any flaws but um yeah so uh that's that's my thoughts but um yeah i i definitely think we'll see cargo fly a whole bunch i do have that whole video on should starship have an abort system uh why doesn't it and watch that if you have any questions about that uh robert thank you so much for the pear emoji i appreciate that uh travis cecil the space bingo card idea winner takes a hundred dollars in free merch we could probably try to figure that out that'd be really fun yeah um i think that's a really good idea definitely dizzy d says i think what elon meant is that tweet uh in that tweet is that engine swap needs to get down to only hours not that these ones are going to be swapped that quick i think you might be right i think he's talking about ambitions but um it wasn't very clear and obvious in my opinion so um yeah that's that's a good thought but i guess we'll see it's definitely taking more than hours so uh eric also thank you for the payer character i appreciate that rex says gur also take my money love elon love mods love how you cover spacex updates well thank you very much rex uh and thanks for tuning in for all things space today um alan i think both raptors are swapped out i think they are officially you know they were putting up the second one this morning or this afternoon so i think both of them are officially swapped out uh right now my prediction is that new glenn sls and starship will all be ready around the same time and we all win go team space i think you're i think they're all going to be within like six months i think vulcan new glenn starship's first orbital launch and sls will definitely be i think within about 365 days maybe within six months of each other which which is insane to think about um oh this is this is a great sentiment here from alec hutchinson so i'm saying it's a little irritating that some people who jumped to highlight the loss of spacex's sn8 did not make that test a failure are jumping to say the opposite of of that with the sls green run we test for a reason and this is no different that's a very good sentiment i absolutely agree with that uh ryan heeney says uh used to watch all the shuttle launches and missions uh scene orange rocket beast on the launch pad brings me back thanks for being so dedicated you're welcome ryan i honestly cannot wait to see it fly because i never did get to see a space shuttle fly so this would be my way of essentially seeing the closest thing to seeing the space shuttle fly so uh robard uh says great work as always tim thanks well thank you very much this is from tommaso says gwen shotwell did say she's expecting starship to go orbital in 2021 so not just elon time at this point so you never know maybe it will beat new glenn to orbit i know and gwen made it way more solid that i think they're actually going to try for orbit but the problem is in order to get to orbit you have to have at least 20 or two to two dozen engines on the first stage of the starship and at least three to six raptor engines on the upstairs we're talking about no matter what at least two dozen engines i don't think they have the capacity right now i think they're only in their 50s right now they might have a stockpile of i don't know we'll say six to half dozen to a dozen raptor engines right now that will go on you know sn9 sn10 sn11 sn15 i think all those are probably spoken for every raptor they're probably already still don't have enough raptor interest for just what's built now so to get to orbit um say sn15 does want to go to orbit the booster itself is still going to take about two dozen raptor engines and even if they have not built a single one for that yet we are still um say they're producing one every two weeks we're a year out in just raptor engines let alone the rest of the pad infrastructure let alone every other aspect of it we are a year out just in raptor production which is speeding up so it's hard to tell but i personally don't think we'll see starship in orbit this year but that's my personal bet uh youngster says there shouldn't be any competition when it comes to space flight the only thing that should matter is achieving something bigger than all of us if there's no competition though there's no incentive commercially or or for any real reason to bring the cost down so i think competition is phenomenal i think competition is great it can be a friendly competition it doesn't have to be we hit each other that's what i support i support um it's okay of course everyone's probably going to have their favorite rocket or their favorite launch provider and that's fine but it doesn't mean you have to hate or poo-poo all the other people working on it too that's my personal um you know that's my team space my attitude i invite you to kind of fight tribalism in that in that same manner not think that you know just because sls exists that you have to not like it because you're a fan of starship or vice versa they're all working on different aspects of the same sometimes the same thing and sometimes in the long run we're better off because we have all of those options and we have them competing against each other b shaw when do you predict spacex to launch a cyber truck test payload to orbit on a starship super heavy like i said i think orbit i'm guessing 2022 in my opinion and i would absolutely love to see something like uh some some cyber trucks in space sorry cyber trucks and semi trucks or something like that would be awesome i do need some water really bad uh thomas stern what uh what what are you talking about tim the rs25 are designed for reuse disposing of them is inherently wasteful but reuse they were they were proven to be almost uh wasteful because of how long it took to recycle them and how that it was it took an insane amount of time to actually make them reusable you to basically tear down the entire thing you're basically reusing the outer portion of the engine um i i don't think it's wasteful to it's it's some cost fallacy to say that's the only way forward i think the rs25 i wish they had just used a variant that was designed from the get-go to be to be expended but i i don't think i don't i don't necessarily share that mentality pk thank you so much a new membership from uh endicott thank you very much jazzy mac says uh is the water deluge considered full flow using the pond then recycling back to the pond not full flow probably because the full flow isn't recycling anything it's just utilizing the full flow uh of of turbine exhaust is is uh all all flowing propellant is pre-burned before it goes into the engine that's basically what full flow means um but i i like your idea i'd say it's fully reusable though um yeah uh brian aronson says every even though there are plenty of commercial aircraft manufacturing nasa still has planes built to test new tech this is true this is true but yeah you're not wrong they make a lot of x-planes still to test new technologies um but lots of times it's for things that aren't necessarily commercially viable launch vehicles are proving to be commercially viable in the 21st century 100 so i don't know if um i could still i want them to still be developing things like thermal nuclear engines or ion propulsion and other things like that but i don't think we need them uh ever to be um to really be doing what other people are already doing in my opinion conor veer i know nasa helps spacex with manufacturing dragon but did spacex also get get to help nasa with the sls program no definitely not there was no crossover that way uh desmo sls is simply a waste of money i don't i don't think so i mean it's cheaper than apollo by really any regard again i invite you to watch my video sls versus starship and my other one artemis versus apollo to get a perspective on why i personally don't think it's a waste of money i don't want it long term i think this is a gap filler until everything is caught up and ready but i think it's an important thing now andrew will nasa control astronaut employment forever i don't know i think there could be commercial astronauts in the near in the relatively near future even in the next 10 years but um i don't know what nasa's role will be in that long term that's a good question uncultured uh why do they look so close to the test stand is it the focal length the lens giving them a weird perspective right just crazy they were one mile so 1.6 kilometers they are very close and i frankly don't know why you can be that close i wish spacex would let us get that close to starship because that would be insane uh yeah they were close uh mig wheels says hey from canada uh i love how you how genuine you are and admitting when you make a mistake that's rare these days especially while in the spotlight i appreciate what you do and can't wait to see more from you well thank you very much mig wheels i think that's one of those things that i appreciate even about um the leadership elon has is he'll admit that they're wrong and they're going to make changes because of it immediately they'll be like yeah we're wrong this sucks let's redo it i still think one of my favorite examples of that was domino's pizza in the united states we were talking about this a little bit ago it was like 12 years ago or something they just came out this thing they're like you know what our pizza sucks you guys told us that you hate our pizza so we redid it from scratch and we have new pizza and it's great now i think that's a lot better i don't like when people act like they know the answers and the answers are rock solid and there's nothing that can change their mind i think that is arrogant and i think that is um i think it's conceited to think that you always know the answer good scientists will always will always tell you they do not know the answers and that's that's part of the scientific pro process is admitting that there's flaws in your design admitting there's flaws in your your hypothesis and your theories and trying to disprove them over and over until you have our are sound that this is the the best solution or the best answer um i i would prefer to try to live by that mantra i'm obviously not perfect and neither is anybody else but um but yeah i think that that's an important mantra to live by is that you're you're to some degree wrong no matter what uh even when on the things that you know you're right on uh there's always the idea that you're completely right on everything is is just ridiculous uh this is uh from ccs4646 if you go back a bit uh was that an srb no we sorry we figured that out it was not those are tanks um wolfson says um how do you get started on space youtube uh i had originally started making artistic pictures of myself in a high altitude russian flight suit as an instagram project as a photography project as a professional photographer in the making of those photos i really fell in love with some of the history and some of the fun details i was learning about space flight and i wanted to teach people about that so i was trying to teach them kind of in photos and that's not very easy to do uh and i realized it was way too hidden you should watch i have a video called how uh spacesuit almost killed me uh watch that you'll learn about the history of how i got into all this stuff and i started doing youtube full-time in 2017 uh at the start of the year i had like 100 or 200 or something subscribers and i started full-time on that it was a total like winging a prayer type of thing just jumping in hoping that i could make it grow and i just started by starting and it was terrible at first it was horrible it was so cringe-worthy so bad and then since then you know you just iterate and improve and that's the story of life all right this is from uh kylie saying hi tim i'm watching with my five-year-old nephew james today we love learning about rockets in space together and often watch your streams a shout out would be great please if you don't mind absolutely sorry if i'm really late here uh kylie i'm getting to these now but hello uh james thank you for tuning in with me hopefully you enjoyed the test and uh yeah i i really appreciate you guys watching and hopefully you're excited about rockets and spaceflight and want to see more of them because i sure do too so um yeah thank you very much okay desmo says um maybe this thing will work for once uh it it did and it didn't i want to try to wrap up here in a timely manner so that i can actually uh listen to the post post press briefing that'll be on nasa tv so i encourage you to all do the same too uh thank you so much from 6969 saying hopefully this will help a bit um if it does take a month not a lot sorry well thank you so much i do appreciate that i really hope that we see sn9 happen sooner rather than later um and that i'm not just stuck in a hotel for the next um x amount of time yeah uh patrick walzer i learned yesterday that grumman aerospace changed north american rockwell about uh 310 000 oh charge sorry charge north american rock wall about 310 000 after towing the command module from apollo 13 to and back to the moon of course it was just a joke but i had a great laugh i did not know that that is awesome that's cool because they used it obviously as a life raft that is that is really cool um jm studios uh the eur european upper stage is cheaper because the tanks are designed for production i.e can be produced with existing machinery mass production spreads uh out of fixed costs cheaper engines you're right um yeah very cool you're right uh you know the manufacturing obviously there's oh man i've got a long ways to go holy crap my voice is going to die by the end of this um but yeah you definitely get economies of scale or is it economies of scale or scale of economies of scale yes thank you i get it backwards half the time there are definitely economies of scale when you when you build things for mass production and not kind of these bespoke one-off things and icps the delta iv upper stages is a limited thing they're done with it basically they're trying to shut that line down so doing that anymore is very cost prohibitive travis cecil give uh integration of given integration of tank with fuselage and gauge of steel used in starship how would you deal with risks of mars flight like micro uh micrometeoroids and radiation i think the thing is that the steel is really thick actually but i don't know the best way for micro meteorite uh mitigation and we talked about radiation a little bit ago but um i don't actually have the answer to that and um i think they could maybe produce some kind of who knows if we're going to mars you might need to have some kind of like whipple shield or some kind of shield outside of the vehicle that is protecting it i i have no idea to be honest but that's for the engineers to figure out it's probably a fun problem to try to solve space channel 5 thanks for the membership same with jonathan sit well um same with baja truck guy christopher daley puffin thank you guys thank you all for your memberships i appreciate that simon murray says uh to help with your stay for sn9 well thank you very much seriously it it it really does help trust me uh dj jones what is the purpose of a schedule of a scheduled hold why not add that time to the countdown so um i i don't know that is so confusing to me i think it's a time for them to review data and then because their systems aren't fully automated there's a lot of manual procedures and things to check out and read out and do all these things it's better for them if they have a window to just kind of have it as soon as close to t0 as possible and then release the hold and let the terminal count continue but um spacex got to the point of trying to automate all that so basically like t minus uh 45 minutes or they just let the rocket do its thing and they only cancel if they see something off nominal or if the vehicle sees something off nominal but i that confuses me too oliver pat greetings from germany all you space people read uh perry roadhand uh cool i don't know what that is but there you go that was uh that was from oliver pat himself uh jeff strand shout out to ethan all right i love it um oh is that is that you shouting out to ether do you want me to hi ethan just in case i don't know uh mig wheels i'm 19 hours away well i hear it i don't think canada's gonna hear it uh bait 215 i heard the low rumble from the test that is awesome bait thank you for getting back to me i'm sorry that it took me this long to get to it that is so cool that from 45 minutes away you could hear the low rumble that is awesome thank you for sharing that uh chris j sls is not reusable legacy tech versus starship right um no it's not reusable period again if you guys have questions about the stuff anytime like uh sls versus starship i have a lot i have so far two deep dive videos on that um and there's more to come uh says go figure uh unfortunately yeah desmo thank you or thank you desmo uh from yon or john are they able to recycle definitely not and they're uh yeah that's not really in their mantra so no recycling uh mr space boy i'm getting my full flow stage sweater soon awesome thank you for your support i really appreciate that uh john moore there seems to be a lot more mission control chatter and activity compared to spacex launches spacex used much more automation compared to sls uh there is a lot more automation in spacex's countdowns now but also um we don't hear the chatter so there is probably a lot more comms chatter that we just don't hear but these days that's such a well-oiled machine i think a lot of it is automated there's probably just not as much communication on comms anyway but sls is definitely a more traditional way of doing things so there probably is a large amount of chatter because of that um from uh from sorry from tis vande tuin i'm there you go sorry how does super chat work what does the indicator bar mean um it shows so that shows how long that comment will stay uh pinned up in the up i try to get to every comment though uh today i'm regretting that decision and i will not be able to do that like on on starship days but it shows um you know the bigger the super chat is the longer that that stays pinned to the top um so it kind of gives you a timer for how long based on on the super chat yeah i think i don't really know either um eric says this isn't a big deal every launch service has had early aborts during tests that's why we test it it isn't unique to a boeing absolutely same thing with starship i mean it's it's i'll say this no matter what the vehicle they test for a reason and i'm just glad that the hardware is still there and existing and not in a million pieces a hundred percent hopefully they learn and will know what went wrong and they can proceed from there or re-test if necessary nate erickson thanks tim for all your hard work and commitment to live streaming spacex and other space advancements well thank you nate i appreciate you saying hi a thousand dots hugs tim there'll be another time hopefully or they just go right to the flight i wouldn't mind seeing that thing fly asap film crew tech like you i am on team space but i'm also on team taxpayer imagine what elon could do with sls money just seems like a waste i do i mean i agree with you i i do think that that elon and spacex has proven to be a better cost per dollar they have gotten things done uh cheaper and quicker than more traditional ways of doing so but again at the time that sls was conceived that would have been a way bigger risk than the way that sls is running now i think going forward i think nasa's learning their lessons and that's why they're implementing things like hls but at this point um i still i still agree with the decisions to have to have done that so um uh oh people are asking no uh the peak our peak viewership for sn8 we got a hundred and was it ninety two thousand or 182. either 182 or 192 000 concurrent views um at a time in discord so you guys asking about that um so we're we're quite a ways away from from that for a test like this but maybe sn9 will break it we will see tell all your friends to watch sn9 and let's see if we can smash that record um honoluck why are you all hating spacex burns only last seconds um for starship you're right i agree i i'm not even paying attention to the main chat because i know it's probably pretty toxic um but i'm just glad that a test happened and that it's still standing like i said uh this is from ken good to go one minute eight minutes both fine ship it i love it uh thank you very much ken yeah and one does not equal eight but meh we'll see we'll see what they do george um says um starship can easily send a fully fueled falcon 9 second stage to into orbit would this make a decent third kickstage um not really the falcon 9 upper stage stages not really efficient in terms of space they could be used as a kickstage but now you have to have on board uh you know you have to have rp-1 fuel if they have umbilicals and stuff built into starship to be able to support excuse me a third stage i i don't think it makes too much sense um there might be some cases where we do see kick stages though and things like that but but there could be better kick stages and stages than the falcon 9 but maybe that would be enough performance for certain use cases but um i don't know that's that's a good question alexander jordan project pluto modified for laser ramjet all of that that almost means nothing to me unfortunately alexander it sounds awesome and since it's a question my answer to your question is yes absolutely absolutely project pluto modified for laser ramjet yes j.r moore none of us are in a position to call this success for failure i hope nasa got the data they needed absolutely jr you're 100 um we are all arm chair engineers at this point quite literally jesse oh hey tim uh my f me and my family were wondering what what do you think will happen to us space force now greetings from england i think u.s space force will stick around i think it makes sense it had been proposed for 30 years i think it does make sense to have space assets managed by one department air assets ground assets and sea assets all managed by their respective territories right um i think it'll stick around i think it'd be silly to try to back it up back out of it now really all it is is really organizing how things are it makes a lot of sense when there's certain missions that will trade off from literally from like spacex's hands to nasa's hands to the air force's hands to uh the you know department of defense or something like there's a lot of trade-offs a lot of times and it'd make a lot more sense to just unify that into space force so i think it makes sense myself um and i think it will stick around kevin martin do you think elon will stick with tiles or end up with a newer heat shielding uh for this century tiles still makes sense people hate on tiles just because the space shuttle uh had a lot of compromises in their tiles like being glued on and being really fragile uh and all of that but this is very different the tough rock material is is a lot stronger it's physically bolted onto the vehicle they're mass produced in a uniform shape and size so they can quite literally just fill the whole thing with it no big deal unlike the space shuttle i think that it still makes sense but we will see um how it goes from here on how i mean starship will change a lot every constantly so i it's it's impossible to predict the future with starship and with how quickly they change things um apex nuclear pulse propulsion project orion is the best propulsion our physics allows and is totally safe to use in space for getting up to speed and on dead planets for launching okay i mean yeah i i suppose it could make sense but i still think it sounds terrifying to me but that's just my opinion uh luag says chinese aiming to use the moon as an orbiting space station and base for future for further space travel ahead of the us are the chinese more patient or realistic um i don't know if it's that great of an idea because you still have the gravity well the moon so does it make sense to land a spacecraft there and stage there and then go from there i don't think it necessarily makes sense i think it does make sense to maybe use lunar resources and and refuel things from lunar orbit because it can take less delta v to get from the moon back to earth and and fuel up a vehicle in an elliptical orbit than say going from earth up to space and then you're not having any of that um any of that high energy and highly like polluting resources in our planet you can do that all in deep space get heavy industry off of off of earth um rv i've subscribed through youtube what's better for you that or patreon patreon actually takes less of a cut patreon takes about 10 and youtube takes 30 of super chats membership so if you're purely wanting to support what i do uh i i do recommend patreon for that so patreon.com everydayastronaut definitely helps make all of this possible and i and i am so so incredibly thankful for everyone that does that um yeah thank you for asking and thank you for wanting to do uh what's best with uh with the money so thank you very much i i truly appreciate that apex um a very easy solution for radiation for colonists on mars until they figure out shielding is to send colonists over 50 who have already had kids there we go yeah you're right uh because you get that kind of lifetime radiation goals for nasa so um yeah you're absolutely right lori today was was still so exciting even though it was short thanks for all your videos my eight-year-old son and i love watching them well thank you lori and thanks for watching with your family again that that truly means the world to me i again was excited glad that they got some data we'll see what that data teaches them paul says what was the objective hayabusa like what data could be extrapolated from the regolith also uh the oracle weights well i i don't know i mean you know it's the unknown unknowns we don't know what data you're going to learn about an asteroid until you collect data and collect samples and start going through and learning the the objective was to uh collect samples from the surface and also subsurface samples and then see what we learn it's an open book um that's the best that i can answer that harrison baxter for a mars ticket cup of coffee or an adult beverage love your channel great content thank you very much harrison i do appreciate that um eloquence major major component failure is detected by the ssme controller it's bad yikes well hopefully they learn and maybe they'll swap an engine and get the vehicle shipped out or have to do another test but there are plenty of uh of rs25s lying around like i said there's 16 of them from the space shuttle program so hopefully they could do a swap repair that one and get the vehicle ready to go uh thank you ryan's random videos for the membership aaron j morton uh let's say you're streaming something 10 years from now what do you predict could be the wildest thing we'll be watching thanks for your devotion great question aaron i think in 10 years i realistically think we're getting right around 2030 is when humans will land on mars and i think that's what will be the biggest most defining moment of my career as uh as following this stuff on youtube and and trying to broadcast it hopefully by then i will have the best setup possible uh with a full team able to really bring you the best coverage available period um that's my goal and i think that's what i will be streaming 10 years from now uh now knocking on wood there for that one um kian says hi tim from hawaii about to head to the observatory to watch the stars today there are there's few places in the world that give you the same feeling of awe yes i would love to do some uh some nights on top of mountains in hawaii where the skies are pitch black some of the best night sky viewing in the world i would absolutely love that so yeah all right from lucian uh funding fly tim on new shepard hopefully before 20 30. well the scary thing is i told as a joke as a complete joke i said when i get to 10 000 patreon supporters i would buy a ticket to space i thought it was literally a joke when i made that i'm coming up on i'm almost halfway there now my voice cracks when i say that because i'm actually scared and i'm dying because i have not had a drink of water whoops um i'm almost halfway there that's terrifying that means in a couple years two or three years there's a decent chance i'll have to buy a ticket to space and i literally don't even i kind of do want to it also actually scares the crap out of me so um we will see i will be yeah uh thorkel uh thank you so much and uh another thing from forklift friendly competition uh is is an easy as easy as an outside observer doesn't work when uh we have skin in the game so agree that competition is good for development though yeah i agree people want me to hydrate i do want a glass of water but i'm almost done i'm just gonna i'm just gonna power through this oh geez i still have like four pages left i'm gonna get through this though um oh this is from own high again when the shuttle visited the uk uh on the back of a jumbo it flew directly over me as i watched not the same but i know still so you've seen the shuttle fly see i haven't even seen that at all ryan's radar videos hi tim i'm from cedar falls awesome and i love space as much as you do and sub to uh and sub to random videos uh destroyed car logo well that is awesome thank you ryan's random videos maybe i'll run into you someday in my hometown that's awesome uh peter ortiz hey tim do starship and starship to have super heavy first stage to return from mars keep up the great work nope starship has enough delta v to get off of mars and all the way back to earth with only starship um don't forget it can use utilize its vacuum optimized engines on the surface of mars um it mars has a lot lower gravity only 38 of that of earth it has less atmosphere so it doesn't have as much uh air resistance to fight against so yeah it does not need super heavy to get off of mars and home koki uh for the hotel run i guess go team space i hope i can see at least one rocket launch with my own eyes in the future i think you should and you need to and hopefully as the world gets back on track here hopefully this year people can travel and go witness space flight because it's definitely worth it it is definitely worth it uh this is from uh j.r moore competition drives innovation an opponent makes you makes your team better i am team spacex but i loved the blue origin test this week and hope nasa got good data now amen i'm with you there uh trevor johnson what are your thoughts on the time it will take to get starship uh crew rated given the falcon 9 dragon took nine years to fully develop and launch with crew i think they've learned a lot i think it'll be a good easily five years before um something like the um like starship actually flies humans from earth i think we could see humans in starship in space before then i think some maybe even the deer moon missions i would not be surprised if it ends up they put starship in orbit park it get it fully fueled and then send the passengers up via falcon 9s because i think it'll take a lot to get it crew-rated through ascent and re-entry falcon 9's would still be much safer for for ascent and re-entry so my guess would be at least five years personally um heather lee finally have some money to uh money to donate can't wait to see your steel on the number nine coverage thank you by the way shame about early cutoff well thank you heather thanks for the support i can't wait to cover sn9 for you guys we have some awesome things uh and awesome things in store for you it will be great i promise friend beast a problem with space travel is human fragility but human augmentation is is a growing technology someday augmenting humans might be easier than rockets i agree with you i think someday that is the trend we're going for but uh meanwhile you know what is really cool when humans explore in my opinion really really cool uh paul do you think cost plus contracts are gone for good well clearly they're not because sls still functions on cost plus uh and i think there's still times and places like how do you how do you bid a uh mars rover sorry how do you bid like a rover or something that is totally bespoke and and one off um in a fixed price contract i i just don't know i think there's too many risks sometimes with fix with fixed cost and um for certain things that are like non-profit like that that are not meant to be profited i just i just don't think it necessarily makes sense at all times but i really hope that some of these things that are already solved already competitive should never have cost plus contracts morton says um if super heavy fails on launch could starship function as an escape system by itself keep up the good work love from norway morton that is in my video do you can starship does starship need an abort system or why doesn't starship have an abort system and should it we talk about that exact question um it wouldn't be a very good abort system i will tell you that um it's slow to spin up it's low thrust to weight ratio at best it might be able to keep its prevent itself from falling the distance of the booster if the booster run it on the pad um but it's not going to really it it's not a great abort system but it might be an option uh meros will spacex build new space station to refuel starship doc lunar lander and so on maybe it could be target of its first cargo missions of starship um i don't think they will build a new space station to refuel that's what starship to starship uh refueling is for you don't you don't necessarily gain much if you put it put depots into orbit you still have to get that mass up there in the first place as a matter of fact you basically just wasted depots you have to keep those pressurized so it's better just to launch your just launch your propellant into the vehicle you need it to be on it's it kind of saves some steps anyway so i don't think we need a space station to refuel starship um elmar refurbishing an rs25 cost very nearly as much as buying a whole new one rocketdyne has the rs025e and rs 25 f simplified cheaper variance designed exactly for now they're reusing because it was an easy path forward the physical hardware from the old space shuttles and i think it's good that they're getting work done instead of uh rusting away or or collecting dust but that's just my opinion john ellis team space nasa and spacex are partners 100 uh fabio says um and thanks john by the way um fabio says hey man thanks for sharing your knowledge and standing your ground in texas well thank you very much fabio i appreciate you tipping that that's awesome sean nasa equals national air and space administration um it's eros wait national uh air and space administration um did i miss say that earlier or something i don't remember i don't know uh but yeah you're right um but that's was that maybe in response to space force i don't know yes aeronautics and space yeah not air but yeah um that's what i thought i was like i don't think it's air um yeah i don't know if i'm missing something but yeah it is uh it's not the national air and space administration but all right um dr gray if you wanted to colonize a part of space personally which do you think would be the coolest place to go asteroid mining um asteroid mining mars europa i'm a big fan of titan i think titan would be awesome i think mars makes a ton of sense too i want to see humans back at the moon i want to see mars and then titan is my next place that i think humans would be a huge huge challenge but once there it'd actually be relatively uh habitable so um yeah all right this is uh thank you for the membership paul i appreciate that jt laser why is sls not reused too big engine turnaround cost nasa not motivated to i think nasa had a bad taste in their mouth with how much refurbishment cost uh for the space shuttle and just in order to maximize performance at the time it made sense to not pursue reusability reusability was kind of seen as this thing after the space shuttle and they had learned those lessons and they just wanted to go full on out and maximize performance and reduce the risk on development too so if you can't iterate quickly like what spacex does it's really hard and nasa has a hard time shifting like that just inherently so um that's why it's it's more just it was easier design a safer bet and easier to design an expendable vehicle period andrew klatt awesome job tim wintering in spi uh bring your crew out drinks on me well thank you very much andrew um we're we're still holding pretty strict social guidelines here uh we're not really going out we're ordering in which is why it's not the most fun thing to do uh in the world but uh yeah we're trying to still keep things safe really make sure we're i think we're still in like the we're nearing the end of the tunnel of the pandemic i really would like to get out of this thing without catching corona uh i think that'd be fantastic so uh but maybe soon we'll do a meet up once things are safe to do so and i would love to then take you up on that offer riley star big fan uh big fan since the space flu space flight days congrats on everything you've built where do you want to be in 10 years still covering the industry part of the industry something else entirely riley honestly i want to be here when humans get back to the moon i want to be still doing this when humans land on mars but i don't want to be doing this full time i do at some point probably want this to be a little bit more self-running and i would love to pursue uh other interests i i someday want to maybe pursue becoming an architect i know that's has nothing to do with space flight that was another big passion of mine um yeah so i don't know i mean that'd be very a big a big 180 but um that would be what i would like to do someday i might be going back to school when i'm like 45 or 50. no shame in that and and pursuing that but we'll see we'll see we'll see if i can stick it out that long chris harris thank you so much i appreciate seeing you thank you very much jr craft uh we're only send robots to the moon if money wasn't issued we'd only send robots to the moon if money was if money was the issue yeah i mean but there's still definitely something to be said about putting humans on the moon and money is always an issue so jrne you should get a free ride on dear moon i'm sure elon can make that happen save on money but not on anxiety i don't know if i'd fly into your moon honestly it scares the crap out of me starship still is very scary being one of the first crews on starship would be very scary but it would be insane i would i don't know i literally don't know what i would say yeah um i have not checked out stream labs for donation processing yet but i probably should consider it i'm almost done guys and then i don't have to hydrate well then i can hydrate in a second and i will brighten the camera i don't want to brighten the camera because you'll see the settings on screen like this we don't want that um i'm already cranked on my on my aperture and i can't adjust the gain without going through the menu so we're just going to finish um i i will look into that but it's just so nicely integrated here in youtube uh will cooper uh starship super heavy reaching orbit this year is feasible um how many test flights are needed before next mars launch window uh an uncrewed mission in 2024 strikes me as possible why not accrued in 2028. i agree with everything you said frankly um i could maybe see a vehicle good getting to mars in 2024 in that 24 24 window we will see i don't know how many test flights are needed i personally don't think we will see starship in orbit in 2021 personal bet but that's just me being a pessimist because i'm out here pooh-poohing seeing things not work out always so from uh acacia here's two dollars for a bottle of water i thank you very much um evan where's the elon interview after sna i don't know i've again been talking with their teams trying to figure it out and it's just a scheduling nightmare still elon is a very quite literally probably one of the busiest people in the world so getting time with him although he wants that and although his team wants it and i want that we're still trying to figure it out so we'll see nate iverson is spacex's dear moon mission really using starship are they expecting civilian passengers to be on board of a propulsive landing by 2023. i i addressed that a second ago um i personally think some of the early missions including that could be where they just dock with it with dragon they do it in a safe manner you could even put seven people on it because you're just going up to low earth orbit briefly stuff it full of people you know put the cargo on the starship refuel it do all that stuff and then send people up and back down eventually using dragon capsules that's just my personal what what could be a possibility if they're not ready to fly people uh on ascent and re-entry uh johnny noble can you tell us about the uk's joint mission with rolls-royce to look into nuclear-powered engines i cannot but it sounds like the angry astronaut has a video on that that i need to watch and learn up on so nope i can't unfortunately johnny but it sounds like there is a good video out there um i i can't vouch for it myself have you not seen it but um i i hear the angry astronauts been making some good videos so check that out uh tyler if sls is delayed do you think nasa uh will have to shortlist spacex as one of the two lunar landers to have any shot at the moon and 24. uh no if spacex as a lunar lander will not help the situation at all because it will not be taking crew from the surface of the earth to the moon it'll have to be meeting up in lunar orbit with orion that is the only option right now especially anywhere near 2024 2025 i just don't think i don't know i i think the first missions to the moon will 100 the missions to the surface of the moon will be with artemis and it will be with orion um at nasa but then again i would love to see spacex prove me wrong that'd be crazy john ls spacecraft inspired architecture popular hey that would be cool that'd be very cool yeah i love that okay i made it through i made it through all the comments i did it thank you guys so much for all your super chats i really really appreciate it thank you for watching that test with me you guys are awesome uh again stay tuned we've got a lot more coming there's a rocket lab launch coming up soon uh make sure you're subscribed and uh and and just stay tuned on twitter and we'll keep you up to date and hopefully we'll be able to see seal number nine fly here in a week or two or three or whatever and hopefully i maintain some semblance of sanity waiting for that so thank you all for your support making all of that possible if you do want to help support what i do consider becoming a patreon supporter by going to patreon.com everydayastronaut and there you can get some fun perks like joining our awesome discord channel and all these other fun things including some exclusive live streams and stuff like that too so uh thanks to all my patrons you guys are awesome and again if you do want 10 off of the normal shirt or the normal hat go to everydayastronaut.com shop use coupon code launch day for 10 off of the normal uh normal collection and that's a fun way to support what i do too so thank you everybody that is going to do it for me i'm tim dodd the everyday astronaut bringing space down to earth for everyday people bye everybody [Music] [Music] so [Music] [Applause] [Music] so [Music] so [Music] [Music] so [Music] [Applause] [Music] do [Music] you

Channel: Everyday Astronaut

Views: 491,527

Rating: 4.9301791 out of 5

Keywords: SLS, Space Launch System, NASA Rocket, NASA Rocket Fire, NASA Rocket test fire, Orange Rocket, NASA New Rocket, NASA Stennis Test, NASA SLS test, NASA SLS Green Run, SLS Green Run, SLS Hot Fire, Green Run Test, Artemis Program, Artemis Rocket Test, NASA Megarocket, SLS test, SLS Launch, RS25, Stennis Space Center, SLS Static Fire, SLS Core Stage, SLS Core Stage test, NASA test rocket, NASA mega rocket test, teamspace

Id: pKdkRLpAOvo

Length: 188min 0sec (11280 seconds)

Published: Sat Jan 16 2021