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Should be used for question pertaining to part of propellant that is used to ignite the fuel.

5 votes
2 answers
391 views

Could a SSTO bladder of air scooped from atmosphere improve performance?

Given that the engines react with the oxygen in the air during the first stage, you'll have an unequal ratio of fuel to oxidizer. … There's extra empty volume in your craft being freed up while at the same time you're swimming in Oxidizer. …
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14 votes
2 answers
3k views

Disposition of the Oxidizer Tank in Rockets with Autogenous Pressurization

A little while ago, Ars Technica did a big story on the Firefly rocket under development. http://arstechnica.com/science/2014/11/firefly-space-systems-charges-full-speed-toward-low-earth-orbit/2/ A …
AlanSE's user avatar
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