Jixuan & Sebastian: BUSTED! (PART 2)

you know there's a tradition in movies that the second one is never as good as the first this ain't that kind a sequel what's that you say ah that's not possible that first busting video was pretty harsh that means i would do that you'd have to do something completely preposterous like debunk masks white paper itself we all know that that's just not possible no no no no surely that's just not possible hell this is such a debunk that it'll even change the way that you see movies like say for instance how this is directly related to the hyperloop we had to come up with a nuclear deterrent because that always calms everything right down remind me again how you made your fortune start not just that but this as well yeah big man in a suit of armor take that off what are you genius billionaire playboy philanthropist and if you think this is just some reference to elon musk not even close yeah if you pay close attention it's quite obvious but no spoilers yet answers at the end to set the stage back in 2016 i made my first busting video on the hyperloop which has stood the test of time remarkably well come 2020 these guys decide that they're going to expose all the mistakes in that video um spoiler alert this is what it looks like when someone with no knowledge or experience of vacuum systems try to debunk someone who has 20 years experience in working with vacuum systems let's start with something elegant but devastating over to you joaxon thunderfoot makes fun of the hyperloop linear motor demonstration sure it wasn't a complete hyperloop no it wasn't quite a complete hyperloop you know it was just missing one or two key components like say for instance a vacuum tube and a pod that people could actually sit in or air locked or stations it was basically a barking basement maglev but you know this is a comment that crops up a lot on my hyperloop videos that oh you're you're too critical this is their kitty hawk moment of course you can't expect them to get it to work straight out of the bag except no the simple reality is the hyperloop is at least as old as a kitty hawk goddard the guy who the space center is named after was writing about the hyperloop about the vac trainers it was then known in about 1910 less than 10 years after kitty hawk took to the skies and after some 70 odd years kitty hawk had matured into concord meanwhile the only thing that had changed on the hyperloop over those 70 years was the quality of the drawings and here we are some 50 years after that and now elon musk plagiarizes the idea of the hype loop and passes it off as his own you got that from vickers work in essex county page 98 right yeah i read that too but it would be for for a fifth mode of transports were you gonna plagiarize the whole thing for us do you have any thoughts of your own on this matter i have a name for it name for which is called the hyperloop the hyperloop but is that your thing you come into a buy you reach some obscure passage and then pretend you pawn it off as your own as your own idea just to impress some girls call the hyperloop the hyperloop but don't worry we've got competent media i'm sure they will diligently research this and work out that the hype loop is in fact a 100 year old idea that was simply plagiarized by elon musk sounds like something with elon musk written all over it wouldn't you say well there's a good reason for that turns out that the original idea for the hyperloop came from none other than the tesla founder himself when it was first conceived by elon musk in 2013 the brand new method of transport brought forth by the entrepreneur and billionaire elon musk elon musk first described his idea for a futuristic transportation system that would send passenger pods through tubes at speeds of hundreds of miles an hour back in 2013. since it was first proposed in 2012 by elon musk tesla co-founder elon musk first proposed the idea in 2013 and the first hyperloop will be built in dubai by 2020. in reality the only thing that has changed on the hyperloop over the last 100 years is now the quality of the computer generated graphics anyway where were we ah that's right i was having all of my mistakes exposed at minute mark 22 he then goes on to say how much better and safer airplanes are well yeah planes are the safest form of transport you'd have to be pretty dumb to argue against that but what do i suspect you're about to try seriously as if no plane ever crashed in the history of humanity yes you can still have plane crashes and her planes be the safest form of transport and don't forget that airplanes are a very mature over 100 year old technology yes strange that isn't it one of these emerged as a viable technology and the other one didn't now some cynical people of course might say there are very good reasons for that he then goes on to say that once in the air airplanes are super safe nothing can go wrong anymore and they cannot be targeted by terrorists anymore come on at least try with your strawman this is what i actually said now when they're near to the ground of course they can be shot at but once in the air they very quickly go beyond the range of all but the high-end military weapons that's something that's simply not the case with the hyperloop there you go you got it i make it very clear that unless you've got some fairly advanced military-grade surface-to-air missiles you cannot shoot down a plane at altitude you know what be really dumb like astronomically dumb like being dumb in the olympics dumb would be to say look here's a plane that was shot down by a military-grade surface-to-air missile boom that proves thunderfoot was wrong that you need military-grade surface-to-air missiles to shoot down planes at altitude take it away sebastian how about malaysia airlines flight 17 which was shot down on the 17th of july 2014 while flying over eastern ukraine killing all 298 people on board yes let's see malaysia flight 17 was shot down by a buck surface-to-air missile not just high-end military hardware but the exact same buck sam launcher that i had in my original video but once in the air they very quickly go beyond the range of all as if hyperloop was the only possible terrorist target oh yeah and regarding the terrorist argument yeah right okay so to shoot down a plane as altitude you need something like this not only that you need the plane to basically fly over your sam site otherwise the missiles don't have the range to destroy the hyperloop you need a single 50 cal armor piercing round current retail cost about 10 dollars and then just to shoot a hole in the hype loop tube at any point in a 600 kilometer length oh and it can be fired by a handgun or you might want to brace your wrists a little for that one then thunderfoot says something funny again at minutes 23 seconds 21 he says that anyone with a rifle could easily destroy the whole hyperloop tube by shooting at it seriously he said that in reality a rifle would leave just a small dent in a one inch thick steel tube a small tent yeah unless you live in america where out in the desert quite a lot of signs actually look like this and for a fairly simple reason where you can get 0.5 bmg rounds we used a silver and red tip armor piercing incendiary tracer and the weapons to fire them quite easily so for today's video we have a 55 pound anvil we're gonna see how it holds up against the 50 bmg aka the 50 cal with the right rounds those don't struggle with getting through an inch of steel oh wow you can see where that 50 cut down into that anvil that is awesome a rifle would leave just a small skin in a one inch thick steel tube a small bend you can see through them by that argument you should also not drink water because hitler also drank water and now to wrap up that slam dunk she's gonna get the most wrong in the least amount of time take it away it wax on in the end thunderf00t makes fun of the hyperloop linear motor demonstration sure it wasn't a complete hyperloop only a linear motor but did he even bother to watch the hyperloop competition oh no i i'm so busted my my mistakes have been exposed how could this possibly have happened oh hang on no wait hang on that's right it's because the video that they're criticizing was put up six months before the hyperloop competition even took place they are criticizing me for not putting in things that hadn't actually happened yet into my video but not that it greatly matters because when they did occur i made several videos debunking those as well and i'm sorry i interrupted sebastian and walks on in the middle of screwing up even more badly but did he even bother to watch the hyperloop competition they have pots which are two scale going at 463 kph i mean this is just sheer fractal wrongness no the hyperloop competition did not have full sized pods on it what you've got there is actually video from hyperloop one which was later bought by virgin hyperloop this is what the first hyperloop competition looked like now it's about to kick off remember the spacex pusher will bring it up to speed then it will detach and let hyperloop mit do its thing okay you ready for this so the uh pusher is going it's accelerating the pod the pods getting faster and faster 30 kilometers now 40 kilometers an hour 50 and so forth up to 60 70 and it's released apart and the pods stopped have to go maybe i'd know 50 meters or something elon musk decided to host a competition he told the world come up with hyperloop designs and let the best design win indeed the winning team actually only managed to go slightly further on its own so here we go the push is off and it's accelerating the pod 30 kilometers to that 50 kilometers to 60 70 wow it's a record 80 kilometers an hour 80 90 kilometers per hour and it releases the pod and the pod stops one of the things this competition is for is to show the world that we can do this and convince them that we should build it somewhere and get the ball rolling but did he even bother to watch the hyperloop competition they have pots which are to scale going at 463 kph yeah let's take a look at those uh full scale pods that they had in the first hyperloop competition shall we up top here inside you see we have the seat where the dummy goes in fact if my memory serves me correctly there was only one pod in the first hyperloop competition that was actually big enough to take a full-sized human it's really all about is advancing the state of transportation trying new things that have never been done before and that was in the first year in the subsequent years it basically became a competition to make the most overpowered electric car that would run on a rail that you could do so the the hyperloop pods eventually evolved to the point where they were so small the 40 students sat there grinning looking at a pod they're designed which couldn't even take an action man but on the bright side they did show how fantastically safe and reliable this system was for running small electric cars but what about that video that they had of their full-sized pod going at 4 000 kilometers per hour well spoiler alert it's not actually a full-sized pod it's an empty fiberglass shell running up and down on that little electromagnetic skate we saw earlier it's from a company called hyperloop one which has since become virgin hyperloop and it's got absolutely nothing to do with the hyperloop competition it wasn't a complete hyperloop only a linear motor but did he even bother to watch the hyperloop competition they have pots which are two scale going at 463k i mean even if i was trying i'm not so sure i could get that much wrong in 15 seconds now i do have a slight correction to make to my last video which perversely makes it even more devastating you see i said that you know these people roxanne and sebastian had no knowledge of science or vacuum systems which was a fairly reasonable deduction to make given that sebastian here was struggling with some of the most simplest concepts in physics you know high school level stuff you know in my original video i said that hey look they want to make this out of a single piece of tube well metal expands when it gets hot so you can calculate how much longer it's going to be on a hot day versus a cold day and the difference in the length of the hype loop there would be about 300 meters about the length of three football fields it's as simple as physics get you know you get a bar of metal and you have one temperature and then you heat it up a unit amount of temperature and it expands a certain amount and that amount that it expands per unit temperature is the linear expansion coefficient which holds over most sensible temperature ranges and sebastian here manages to mangle that formula into thinking that no the two temperatures aren't the temperature before and after it's the temperature of both ends of the piece of metal that it would vary by an incredible 300 meters in the case of 40 degrees celsius temperature difference between both ends but wait wait this argument would only count in the case that we would see for example minus 20 degrees celsius at one end of the hyperloop and then this temperature would gradually increase all the way to plus 20 degrees celsius at the other end of the hyperloop because that is how the temperature variation formula which he probably used works however in reality of course there would never be a scenario where we would witness a 40 degree celsius temperature difference along a length of 600 kilometers imagine having minus 20 degrees celsius in san francisco while at the same time having plus 20 degrees celsius in los angeles it sometimes helps to do a bit of physics you know this is flat earther levels of understanding of physics so i just assumed that the guy couldn't have any sensible education on this well it turns out the guy actually has a phd in physics and my eyes just popped out of that when dave from eev blogs passed this on via twitter cool so here he is sebastian phd is working with his wife jigswan wang on the youtube channel to the future and this is from the lifeboat foundation safeguarding humanity uh he born in romania moved to germany studied at the technical university of munich who i assure you are rolling their eyes pretty hard right now maybe about to become fatal eye rolls um yeah he earned his phd in theoretical laser physics let's take a quick look at that uh yeah it's all going to be photonic [ __ ] you know modeling of lasers which would be a bunch of yeah quite i sincerely hope someone actually checked this like um the guy who screws up uh linear expansion coefficients like this now how this actually would work is that of course we would see many temperature fluctuations along the entire length of the hyperloop meaning the hyperloop would contract expand contract expand contract expand and so on and so forth along the entire length therefore in reality the length contractions and expansions would just on average cancel each other out along the way to come to the conclusion that metals don't expand on hot days mathematically speaking the sum over all length variations along the entire tube is according to the length contraction and expansion formula equal to the sum over alpha times all the temperature fluctuations along the entire tube alpha being the expansion parameter so therefore the constant we can pull alpha in front of the sum so that we have alpha times the sum overall temperature fluctuations but since the temperature goes up down up down and so on and so forth delta t has an alternating sign so plus minus plus minus and so on and so forth therefore the sum over all the delta ts will on average cancel each other out now summarizing everything we saw that the devil lies always in the detail superficially an argument might sound logical but then you dig deeper into the physics and then the argument starts falling apart very quickly well actually no if you stick to real physics it's fine if you go for alternative physics then yeah you're right it falls apart pretty quickly watching a video like this without technical expertise or a background in physics or engineering one might even believe this guy there just aren't enough face part memes at this point and scrolling through the comment section there apparently are enough people to believe him we made this video to show you that we should always do our own research yes and i graciously thank you for all the comedic value we got out of the uh the research that you shared with us by that argument you should also not drink water because hitler also drank water and for all this he is on the advisory board of the lifeboat foundation safeguarding humanity let's take a look at their advisory board this is where our hero sebastian is on i'm sure it'll be a uh well let's see if we can find him oh no that's the asteroids and impact board and we got the ashram okay let's see if we can find sebastian on this list shall we um okay we're about 25 of the way through let's see if we can scroll through the rest of it and we might we might have to do a search here to see if we can find uh sebastian's position on the advice advisory board oh my god they just want to do it alphabetically at the end right okay let's try this sebastian no yeah there he is so he is on their advisory board amongst all these uh professionals well what board is yetley on he's on the futurist board of course he is so congratulations if you understood the linear expansion coefficients you're smarter than at least one youtuber with a phd now i'm really not sure why they felt the need to come out and defend virtue of elon musk's white paper some seven years after it came out when for about five of those years people have actually been trying to build these things and have worked out that almost everything in the white paper is [ __ ] it's something that elon musk would just be overjoyed if people never looked at it again if it just faded into history it's something that embarrasses him and you know what i wouldn't have even looked at it again had not joaxan and sebastian not insisted that i do and you know what i found when i actually looked at it in detail yeah this doesn't end well for elon musk and not in a way that's actually difficult to understand you know if you understand the thermal expansion stuff then by the end of this video you will understand why this here is fundamentally and fatally flawed now you might want to know how do i know that this is an embarrassment to elon musk well let me show you so here we are on the wiki page for the hyperloop which of course says that it was all invented by elon musk through the the white paper in august 2013 but let's take a look at the references shall we let's come down to the reference section where we find the very first reference is mask elon white hyperloop alpha and if you take a look at the bottom left you'll see it says hyperloop alpha paper pdf at spacex let's take a look at that shall we why that's bizarre that looks like they've deleted it and now i have it redirecting from the hyperloop to spacex let's just do a search for hyperloop white paper shall we and the very first thing that comes up is hyperloop alpha at spacex let's take a look at that it just redirects to spacex now you've got to ask yourself a question why if someone has invented this completely amazing revolutionary new method that's going to be a fifth mode of transport that's going to completely change the way we think about transport would they delete it off their website and have it redirect to something else maybe it's time we took a little bit of a closer look at that hyperloop white paper i mean let's be clear before we actually get into the guts of this the warning signs were there very early on when just a year or so after the white paper was published elon musk was asked whether he favored electromagnetic levitation or aerodynamic levitation and his answer was wheels which one do you prefer steal the air bearings or do you go with magnum it's a good question so you know the a couple of minutes later um so i'd probably advocate um wheels and and why that's an odd thing for a genius to say when his only contribution to the uh hyperloop was we're gonna run it on air skis and compressors pretty complicated elon it's like a tube with an air hockey table it's really i swear it's not that hard yeah it's so easy that you abandoned it completely in favor of a regular train that runs in a vacuum tube wow completely revolutionary but it would be for for a fifth mode of transports i have a name for it neighbor which is called the hyperloop if it's so easy i've just got one question why haven't you done it yet i mean could it be that the white paper is so chocked full of humiliatingly trivial errors the blueprints are pretty complicated well blueprints are always kind of complicated and i mean yes there's math maybe i would take a little bit of a closer look at that white paper you know when it first came out i just gave him the benefit of the doubt thunder food then makes an argument where we think that either he didn't look at the hyperloop white paper in detail or he doesn't understand the concept of the hyperloop pot but spoiler alert when you have to go through the details it's bad it really really bad now the esky's thing was always [ __ ] i mean i've used air bearings before moses until you move a defractometer and sure the levitation levels were minuscule and this defractometer weighs a few tons or something i can't remember the pressure on but it was significant you can tell by the noise okay let me get the vacuum and the floor had to be polished to the point where it was almost optically flat otherwise the defractometer tended to stick on the floor now musk is proposing using those on something that is heavier than this machine and then have it traveling at the speed of sound and what's his clearance in the white paper it says about a millimeter about the thickness of a toenail yeah a fat man farts in this thing and you're gonna be grinding metal at a thousand miles per hour it's not so much in space no one can hear you scream but in a hyperloop no one will hear you being smeared down inside the tube at about the speed of sound yes this was actually one of elon musk's hyperloop competition this is their beloved leader elon musk who was such a genius when he was building his hyperloop tube that didn't realize that it would get rusty when it gets wet i mean where do you think all that dust is coming from oh and the pod which i should stress is really little more than an overpowered electric car which consists of basically nothing other than batteries and a motor it's a nail and it almost destroys everything and that was merely a hundred odd kilos of pod not 15 tons of pod and it's not traveling at the speed of sound but only at about 200 miles per hour so why do you think okay let's take another look at the white paper what sort of air pressure are they trying to do that levitation at why one tenth of an atmosphere at which point i just laughed my ass off that i hadn't seen that in the first place let me show you why awesome so here i have my argon cylinder it's been a while since i used it so these things usually come in with you know fuller about 200 bar 200 atmospheres which means that if i just open this directly you get a lot of gas out of this guy so you can do this briefly for a shower yeah that's not even fully open so just to give you some idea of the gas pressure you're gonna get out i've been getting a lot of these sorts of things recently you know universe is made up of protons neutrons electrons and this one's a huge sebastian the last one anyway right so we're going to have that on there and let's see what a blast from my cylinder will do okay right see that's what 100 atmospheres will do um now probably wasn't even fully open but quite impressive but obviously 100 atmospheres like that is not that much use so we have these things called regulators on cylinders so the first gauge here this one tells you how much um pressure is in the cylinder so that goes up to 300 bar that one and this one tells you how much pressure is coming out of your little hole here all right so let's get that right so let's get that on to our cylinder so when i open up the cylinder let me just check this is all closed good when i open up the cylinder you'll see it pressurizes okay so we're down to where are we we're down to about 50 atmospheres or something so what i'm going to do in the first instance i'm just going to open this up to about one bar just to give you some idea of the gas load that you can get going through here at one atmosphere cool right and with one atmosphere i can usually close it off with my finger no problem usually hold up to about five atmospheres with your finger right let's let's take that all the way down again now let's take a look at what pressure they're actually going to be doing all of their hyperloop stuff with which is point one of an atmosphere which is uh in that point of an atmosphere it's like you've got to be kidding me um yeah i mean it's it's okay let's let's dial it up like this there's that's this is the pressure they want to levitate the hyperloop with even that that's that's half an atmosphere there's yeah so we need it such that when we're levitating we've got about half a point one of an atmosphere pressure it's about there somewhere that is what they plan to levitate that levitate the hyperloop with you see atmospheric pressure is give or take 10 tons per square meter so if i had a pod of theirs let's say their pod weighs 10 tons and in the first instance i'm going to say sat on a total area of air ski that is about a square meter so the pressure on that air ski pushing down is about 10 tons per square meter so we would need 10 tons per square meter pushing up in order to gain lift which is conveniently about one atmosphere of pressure now they want to do the same levitation but with one tenth of the pressure which you can do it's just it means you need 10 times as much area of air ski to do it so they need at least 10 meters of ascii surface area to get this levitation now if you take a look at roughly what elon musk is proposing he's proposing having about 30 square meters for air ski to levitate this thing on now bear in mind if you take a look at the diameter of these pods they're only going to be about a meter wide on page 15 of the white paper all glory to the water the dimensions of the pot are given by 1.35 times 1.1 meters so let's be super generous and say the bottom of the pod is a meter wide that means that the air ski is going to be about 30 meters long let's take a look at how that would reflect versus his actual artist's impression yeah this this is going to be a little tricky but if you look at the other places of his document he says this is these pods are going to take about 30 people well we can see how big two people are in these pods so well that's great let's actually do an accurate artist impression of what elon musk's pods are going to look like so you know we need about 15 times this length of pod which is about this oh and then of course we need an end on the pod very important that end so that's what elon musk pods are more accurately going to look like really long thin structures like this tend to be flexible and and oscillate and vibrate and all sorts of things like that and you have at best one millimeter clearance you you lose that one millimeter clearance from having this thing perfectly evenly loaded over that 30 square meters and you will be grinding metal at the best part of a thousand miles per hour yeah i mean the sort of thing that you can see killing this is say for instance a fat guy it bends over or something that sort of readjustment in the loading would probably be enough to get you to grind metal and this is before you get into the fact that these air bearings are going to be working in a vacuum which is something that no one has ever done before and have them traveling at near supersonic speeds which no one has ever done before all with a millimeter clearance on a track that is a thousand miles long traveling at a thousand miles per hour pretty complicated elon it's like a tube with an air hockey table it's really i swear it's not that hard like i was saying air bearings are a colossally dumb idea from the beginning and they were dropped by virtually everyone the second they took a serious look at it including musk himself um wheels trying to defend the white paper with its air bearings at this point by the way we shall often refer to elon's legendary hype loop white paper from 2013 it's kind of like trying to say hey this bernie madoff guy seems like a financial genius we should definitely invest our money with him and giving that advice eight years after he's been sent prison for running the largest ponzi scheme in history or it's like saying hey there's this brilliant upcoming disruptive technology firm called theranose it's going to completely revolutionize blood testing and saying that eight years after thoranus went bust i mean that's how deep these people are in the cult of musk but he also got me looking at the numbers about where they're going to get this compressed gas from given that the hyperloop only has about one millibar of pressure on it well they're going to run all of this off a about a hundred millibars a tenth of an atmosphere or so of gas and at that point no seriously a hundred to one compression that's not going to happen the whole point is of course that the low density air would be compressed with a compressor at a ratio of 20 to 1. this can be found on page 17 of the hyperloop white paper there's even a diagram on page 18 of the white paper showing exactly how the components would be powered and explaining how the compression of the air would work cool so the air comes in here at 1 millibar and you get a 20 to 1 compression to get you up to about 20 millibars here and then there's another five also times compression which gets you up to 100 millibar here which you're going to use to run the air skis now there's a cooler in the middle there and i'll leave it towards wax on to give you the completely wrong answer as to why that's there of course it also involves cooling the air to increase the density even more it's quite technical and it's not necessary to go into full detail here but it's so much more entertaining if you do i mean just think for a second how little sense what she just said made so here we have our gas simulator and at the moment it's nice and cold the number of gas molecules per unit volume of course is the density so heating it up and cooling it down doesn't actually change the density at all cooling the air to increase the density even more so heating it up and cooling it down doesn't actually change the density at all changes the pressure pressure is essentially the number of impacts on the side of the vessel right so as we heat it up you'll see that you know per unit time you get more impact on the side of the vessel and that's your pressure so we're going to cool it down and the reason i'm going to cool it down is so you can see that when i open this it is essentially like opening the tap on my gas bottle earlier it blasts from my cylinder will do the number of gas molecules that leave is essentially the thrust and as you can see when the gas molecules aren't moving very quickly yeah i don't get a lot of thrust however if i heat the gas up and keep heating it up and keep heating it up and keep heating it up then first of all the pressure increases and now when i open the top of the bottle again for exactly the same amount of time you will see that the more gas molecules leave and when they leave they leave quicker it provides more thrust so why does she think that they're cooling this down again oh right to increase the density they're both a kilogram it steals heaven feathers i mean even if dwight's on here only understood conservation of energy just conservation of energy nothing else nothing about the kinetic theory of gases or anything like that just conservation of energy it's written there in the figure in front of her that they put energy in to compress the gas then they take energy out of the gas which means there's less energy in the gas but it suffices to say that the compressor together with the cooler would compress the low pressure air enough so that the turbine would certainly not explode what a beautiful and totally wrong explanation in reality the reason you don't get a hundred to one compression is because you would melt your compressor now it's actually quite a nice thumb on camera so that means that if i take just a regular pot bottle which is polyethylene pterothalate i am and i'm gonna compress it and we're gonna see what happens to the temperature most people know that when you compress gases in say for instance a bike pump it gets hot and the more you compress it the hotter it gets so here i have a system at about 300 kelvin that's more or less room temperature and this is actually what happens when you compress a gas so take a note of the volume i'm gonna probably compress this with a four to one ratio something like that and this is actually a pretty decent simulation of a gas so as i move the wall the movement of the wall actually starts accelerating the gas molecules because you know it's literally like hitting the wall the the air molecules with a bat so already we've gone up from 300 kelvin to 500 and if we do the complete compression here all of a sudden we're up to a thousand kelvin um which is you know hot enough to melt steel and that was all done this this is why bike pumps heat things up it's why compression heats gases and it's also why the hype loop stops here at a 20 to 1 compression because the temperature is already up to about red hot at that point if they went straight for another five times compression on the gas that they have they would melt their hyperloop that's why they have to cool the gas before they can compress it again well once you get up to about a hundred to one compression like this the gas heats up to about a thousand degrees at which point it really doesn't matter whether it's celsius or fahrenheit it's got a pretty healthy red hot glue to it but don't worry the hyperloop's got a solution for this they're going to use evaporative cooling with water to get it below the point when most of the metal used in this device has either softened or melted completely now water is fantastic stuff for cooling like this you know you evaporate the water into the environment and it sucks out a crazy amount of heat in fact evaporating water to suck out heat from something is fantastic for the exact same reason that it's such a bad idea it's so energy expensive to try and get water condensed from the air and they go through the calculations and i've not checked them but they they look about right that they're going to need about 300 kilograms of water to cool down this gas so it doesn't melt everything well that's great so what are you going to do with all of that water well according to them they're going to store that water on the pod somehow that's a big problem you see once you boil the water that's what took all the energy out of it so now you've got all of this water as steam now almost universally you get gases and you boil them the expansion factor is about a factor of a thousand so a kilo of water will expand to about a cubic meter of gas that's more or less the cross-section of their hyperloop pod so if they're boiling 300 kilos of water they're going to make about 300 cubic meters of steam to store which if they store it at one atmosphere of pressure would be a steam container 300 meters long awesome so earlier we had this as the rough realistic profile of what elon musk's hyperloop pods would look like except now because we're using 300 kilos of water to absorb all of this energy we've got to store the steam which is a container about 300 meters long let's see roughly what that's going to look like yeah yeah i'm not feeling this the the air skis might struggle with a millimeter tolerance to tow a tank that big hey i'll tell you what we can compress the steam such that it doesn't take up as much space unfortunately when you compress gases they get hotter so even if we just wanted to compress this tank on the back to the length of the hyperloop pod some 30 meters the temperature would increase to over 600 degrees celsius this thing would be glowing red hot yeah this isn't gonna happen and bear in mind all of this was basically so you could compress the gas with some huge turbine on the front of the hyperloop to get from one millibar not to one thousand millibar which is one atmosphere but to 100 millibar which is about a tenth of an atmosphere also they could run on their air skis say it with me waxan and sebastian the white paper is amateur hour and this is before you get into all the crap that you need for the 101 compression in the vacuum chamber i mean the nearest analogy i could think of was a turbo pump one of these things so these are turbo pumps which are precision pieces of engineering such as this bit yeah the way these work is they just spin ludicrously fast and because they spin ludicrously fast of course there's a lot of stress on this thing um and the the way these work is i think they're a solid block of aluminium they start off with which is then compressed to make it even stronger and then these are just milled out of the solid so i actually got this one um i don't even know if it works if it works i i would feel so guilty about taking it apart but um i got this one off ebay for a couple of hundred dollars um because no one knew if it worked it might work if it works it's not seized that's one thing um but a working one this is a working one uh you know even second hand they're like a thousand bucks these things and you maybe ten thousand something like that we had to come up with a nuclear deterrent because that always calms everything right down remind me again how you made your fortune start no never mind how he made his fortune on those turbo pumps big turbo pumps in the background big man in a suit of armor take that off those rather unimpressive looking tubes in the background are probably 20 to 40 000 worth of turbo pumps yeah this is just to give you some idea that's the the cost of the precision engineering the precision bearings and of course because of that these things really don't like stress um for certain you know you lose a blade on one of these things the imbalance adult because it's got so much energy in it the whole thing just disintegrates in the good old days the the whole thing used to just explode it used to be quite dangerous to be near a turbo pump that would encasement concrete and all sorts um now they've got much better um and i don't know where that's because they've they've got better at making the blades out for lighter material or what but um yeah these are relatively small guys so if these fail what happens is you open up the pump afterwards and it's basically full of scrap pieces of aluminium because when this thing flies apart when it's you know spinning ten times faster than a a jet engine um it it fails quite spectacularly um right so the thing is you would need the compressor on the hyperloop which is starting with millibar pressure on the outside to get the compression ratios that they're after they would need something like this apart from not not just a few inches or centimeters across but meters you know one to four meters that sort of thing uh there and they are very susceptible you know if there's any damage to any of the blades that's it the whole thing is unbalanced they only work when they're balanced dalton just disintegrates bad news bears if that's on the front of your hyperloop capsule um or the other thing is you know you go over bumps they don't these things don't like being shaken when they're at speed obviously because this thing uh is just the gyroscopic uh action it wants to keep spinning in this plane you rock this around and that'll destroy your pumps pretty quick as well cool so i'm going to try and spin this guy out just to give you an idea of what they look like uh you can't run these things at atmospheric pressure because they the motors just burn out too much stress on them you usually need a pretty decent vacuum on these things before they start functioning sensibly so we have to uh let's come down a little we have to get that guy plugged in there i'm not sure which way he goes on that feels hopeful awesome that's that guy locked on that's for the speed controller which is a box of electronics which is also fairly expensive but um right so now let me get that plugged in and we'll see it spin out hopefully again to spin up so uh yeah they spin up very quickly and i've de-powered it now and you get an idea of just how good the bearings are on this thing by how long it takes it to stop spinning and you you could hear that one because it it's pumping at atmospheric pressure these things don't usually pump an atmospheric pressure they need a a very low pressure you know because like i was saying otherwise you put too much strain on the motor she's putting too much strength on the blades and that's all bad news bears however fortunately i have over here a mass spectrometer cool so this in here is the mass spectrometer actually nowhere near as complicated as it might first seem most of this is just pumps so this is a diaphragm pump under there and that's when i turn this on that's the first thing you'll hear start up and then this is the turbo pump fairly small turbo pump but this one's new and really quite expensive i think this is probably on its own a few thousand dollars probably three to five something like that and all that's gonna do is it's gonna supply a really good vacuum here and the guy on the end is basically the mass spectrometer so let's turn it on and see what happens so that's the um diaphragm pump serving up and once that reduces the pressure to a certain threshold you'll start hearing the turbo pump spin up and you'll hear it as a wine and the wine okay you can hear it starting to spin up now as the turbo spins up faster and faster you'll hear a wine and that's basically the frequency of the turbo pump and it gets higher and higher picture don't you see the the green light there we go this this is the this is the sound of signs at work um yeah we have liftoff it just gets higher and higher and higher so they do get up beyond human hearing they get beyond 20 000 hertz i think okay so and at that point i'm going to just turn it off so now that's just the sound of the turbo pump and that's the turbo pump slowly decelerating so yeah this is you know one of the things with the hyperloop is you would need something kind of like this on the front of your hyperloop um it's just never gonna happen oh and she's coming into land so let's go through all the arguments thunderfoot brings forth against the hyperloop and debunk them one by one yeah how would that work out for you all right we call it a draw yeah he came to expose the mistakes of thunderfoot and ended up humiliating musk instead sebastian you might have a new home on this channel looks like you've got some really good videos about elon musk there maybe we should take a look at those in a little more detail so that's that's that's that done um i hope you enjoyed that if you did make sure that you hit subscribe so you don't miss out on more uploads like this and as ever if you really enjoyed the work of this channel you can support it directly through patreon and there thanks for watching you

Channel: Thunderf00t

Views: 416,757

Rating: 4.8851008 out of 5

Keywords: busted, thunderf00t, hyperloop, elon, musk

Id: V0KKdACV9hI

Length: 54min 48sec (3288 seconds)

Published: Fri Dec 11 2020

Reddit Comments

[u/[deleted]]

Thunderf00t comes of as a bit of a jerk, but he's seldom wrong when it comes to science.

[u/AlanAqulis]

Ah Thunderf00t, whenever Thunderf00t talks on something there's bound to be people who disagree.

The Hyperloop is just impossible but say that to the cult of Futurists Musk peddles to.

[u/muffinLordItai]

edit this struck a nerve. To be clear this is a rant.

I haven't watched thunderf00t's video since (as said in other comments) he's kind of a jerk, but i did watch theirs and for god sake, i'm starting to understand him. I always hated these kind of people. Arrogant, ignorant, stupid, annoying, non logical and logic bending non sense morons (yes , stupid morons), so i studied physics so i could work in middle fields between engineering and exact science, hoping i could help get real ideas (in the sense of plausible) into research or development. But for what reason ? Some people are insane with how much they are invested in those stupid snake oil idea that are just miracles. These people ignore facts (too many to give examples of), basic logic and math (the hitler thing is so so stupid. the temperature math thing where he literally says that temperature fluctuations that occurs between the two ends are negligible, yeah... So according to the model, you would only need to consider the ends... That without even using an applicable model which actually looks at stress caused by thermal expansion. Those temperature fluctuations are actually the real problem since you can't predict them as well), and use information selectively (since when irons=steel ? Everything after that is already wrong). And the worst, PROVING THUNDERF00T'S ARGUMENTS WRONG DOESN'T FUCKING PROVE THE HYPERLOOP WORKS ! Thunder is doing it for a living, i'm not condemning his behavior, but wouldn't you be a jerk to them as well if you dealt with them so much ? I read he worked in chemistry and food engineering, those professions get shit alot from "know better than some egg heads" morons. I work in RF, we get alot of shit too from crazy people claiming the new 5G made their kid fat or some other shit. I also heard there's some stuff about anti feminism and i really don't condemn that shit either (just to be clear).