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Stoke Space test-fires new booster engine (spacenews.com)

submitted 5 months ago by [email protected] to c/[email protected]

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The engine uses a design called full-flow staged combustion, where both the engine’s fuel and oxidizer — liquified natural gas and liquid oxygen, respectively — go through separate preburners before going into the main combustion chamber.

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[–] [email protected] 4 points 5 months ago

they are taking a very different approach to second stage propulsion and reentry

Interestingly, Nova's actively cooled heat shield design bears some resemblance to one of the early Starship designs, though I think SpaceX was planning to "sweat" methane rather than recirculate hydrogen.