From <
https://www.nasaspaceflight.com/2021/08/rocket-factory-augsburg-tests-2022-debut/>
"The same engine design on the first stage will be used as an upper
stage engine, with a modified nozzle for vacuum operations. The goal
for this upper stage is 350 seconds of specific impulse for the vacuum
engine. The engines for the first and second stages will be 3D
printed."
What gets 3D printed besides the nozzle? The combustion chamber?
Injector plates?
If I understand what Relativity Space is doing, /they/ may be printing
the internal parts of the turbo pumps, as well as housings. <URL:
https://www.youtube.com/watch?v=kz165f1g8-E>
(They are also printing the tanks, of course)
Both SpaceX and Blue Origin do some 3D printing, but I've only seen
engine bells specifically mentioned.
/dps
--
"What do you think of my cart, Miss Morland? A neat one, is not it?
Well hung: curricle-hung in fact. Come sit by me and we'll test the
springs."
(Speculative fiction by H.Lacedaemonian.)
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