space

 

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tank pressure

 

As rockets burn propellant, the propellant tanks are emptied, and that space needs to be filled with some gas. This can actually be a significant problem.

 

 

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launch assist

 

These are my favorite systems to help put stuff into orbit that aren't rockets.

 

 

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reverse nozzles

 

For best efficiency, rocket nozzles should expand exhaust to match air pressure.

 

 

 



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