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They built the best rocket engines in the world and the US has only just now maybe caught up with be-4 and raptor
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# ¿ Feb 24, 2021 15:44 |
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# ¿ Mar 28, 2024 23:26 |
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Yup n-1 died and Saturn v lived by sheer coincidence on both sides. It's a miracle Apollo 8 didn't explode during boost
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# ¿ Mar 26, 2021 01:33 |
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Pogo oscillation, but I got my numbers wrong - 6 was the rough one and they improved it over the course of the program. N-1 just got totally wrecked by pogo but imo that could've just as easily been early Apollo flights
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# ¿ Mar 26, 2021 05:11 |
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They figured out ox rich staged combustion in... The 60s? It requires v advanced materials design, turbomach, and combustion devices that afaik we didn't have much to show for until the integrated powerhead demonstrator at the earliest and didn't realize in a booster class engine until be-4 and raptor. To be fair ssme was and remains an outstanding accomplishment in its own right and if I had to sit on top of a rocket I'd much rather have it on the bottom than anything from Russia
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# ¿ Apr 1, 2021 04:43 |
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babyeatingpsychopath posted:So what does oxygen-rich staged combustion do for you that makes it "better?" More impulse? Lower engine weight? Easier control? Less complexity? What advantages of oxygen-rich staged combustion give you over fuel-rich, which is (as I understand it) what most of the American engines were using once they stopped dumping their gas generator exhaust straight out of the bell... For reasons I don't understand it gives you Better Isp, second only to full flow (I think?) but I don't really remember why but this post has some links that sound promising https://space.stackexchange.com/questions/22947/what-are-the-advantages-of-ox-rich-staged-combustion#22950
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# ¿ Apr 2, 2021 01:48 |