Cryogenic Engines | The complete physics
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Channel: Lesics
Views: 1,972,383
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Id: 3isXaIQ3Lkk
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Length: 10min 7sec (607 seconds)
Published: Wed Mar 31 2021
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Aerospace engineer here! This entire video and narration were both really well done. It's worth noting however exactly why so few countries have had success in designing cryogenic engines. It is because a chyrogenic engine must contain a turbo encabulator. In a nutshell, rocket engine thrust is usually generated by the relative motion of conductors and fluxes. In turbo-encabulated engines, medial interaction of magneto-reluctance and capacitive directance eliminates "side fumbling", which allows for a more stable flight. Just in case anyone was curious!
This video finally got me to understand how gas generator and staged combustion actually work. Awesome!
While hydrogen is nice with a high impulse it takes a lot to use on a rocket. The engines are more costly to make. The fuel takes need a great deal of thermal protect. Fuel generation is more costly to make and to store. While you can in theory build a better rocket using it the cost per pound to orbit is more on level with other fuels. If money is no issue use hydrogen.
If liquid hydrogen must be so cold to maintain its liquid state, what would happen if the tank just sat there in the sun and rose in temperature beyond -260C. Would the hydrogen try to get back into a gaseous state and blow up the tank (since density would expand x1000)? Would a rocket still be able to use it presuming the pressure within the tank would increase?
Great video. Amazing what we can do without Fleeb Juice. Fleeb rub based engines just never caught on here, shame.