3 ms·
Okay, I'll bite, How many moving parts do the SpaceX engines have? Assuming the fuel and oxidizer impellers are on a common shaft, that's one. There must be a
by FlyMoreRockets 6y ago
Okay, I'll bite, How many moving parts do the SpaceX engines have?
Assuming the fuel and oxidizer impellers are on a common shaft, that's one. There must be a throttle valve somewhere, so that's two. What am I missing? Are there reduction gears?
- m4rtink 6y agoThey use pintle injectors in the Merlins, so that does move as well (though only a short distance) and is likely what makes them so throttleable. https://en.m.wikipedia.org/wiki/Pintle_injector https://en.m.wikipedia.org/wiki/Pintle_injector
- FlyMoreRockets 6y agoNot sure why I was downvoted. Are the moving pintle injectors separate from a throttle vavle? I have studied a lot of pintle injector designs and it can go either way. Reguardless, a moving pintle injector typically only has two moving parts.