What do they ultimately do with the heat? Or do they just boil of the nitrogen i... | Hacker News

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		scotty79 on March 18, 2019 \| parent \| context \| favorite \| on: Air-breathing rocket engine set for key tests What do they ultimately do with the heat? Or do they just boil of the nitrogen into the atmosphere and need to take a supply of it for the whole trip?

baybal2 on March 18, 2019 [–]

They will use fuel instead of LN2 in the real thing.

scotty79 on March 18, 2019 | [–]

From what I heard liquid hydrogen is quite nasty. It will definitely require different materials than ln2

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