The liquid nitrogen is just used for the ground tests. On the Skylon itself, thi... | Hacker News

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		russss on Nov 28, 2012 \| parent \| context \| favorite \| on: British aerospace company claims biggest engine ad... The liquid nitrogen is just used for the ground tests. On the Skylon itself, this cooling capacity will come from boiling the liquid hydrogen fuel.

iwwr on Nov 28, 2012 [–]

Skylon would basically use the cryogenic fuel as a giant internal heat sink.

A more fanciful application of the concept: http://tvtropes.org/pmwiki/pmwiki.php/Main/StealthInSpace

felixfurtak on Nov 29, 2012 | [–]

How is this different to HOTOL ?

zizee on Nov 29, 2012 | | [–]

Similar concept, different design.

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