A cryogenic rocket engine is a rocket engine that uses a cryoge... - dofaq.co
cryogenic rocket engine

A cryogenic rocket engine is a rocket engine that uses a cryoge...

wikipedia - 27 Aug 2015
A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer (or both) are gases liquefied and stored at very low temperatures. Notably, these engines were one of the main factors of NASA's success in reaching the Moon by the Saturn V rocket.

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