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11 votes
2 answers
726 views

What makes aluminum aerospace grade?

8 votes
2 answers
545 views

Is engine thrust noticeably increased near the ground?

11 votes
3 answers
5k views

Can we use liquid propellants in amateur rockets?

9 votes
3 answers
519 views

How easy is it to use liquid nitrogen dioxide as an oxidizer?

3 votes
1 answer
181 views

Why does Vandenberg have the most launches?

0 votes
0 answers
39 views

How do I convert from one local NED frame to another?

18 votes
5 answers
11k views

Why doesn’t NASA build its rockets using graphene?

8 votes
3 answers
2k views

Could oxyhydrogen (2:1 H₂/O₂ mix) be used as a rocket fuel?

18 votes
9 answers
5k views

Would it be practical to catch a rocket's exhaust to reuse it as fuel?

3 votes
2 answers
490 views

Does NASA really report the power of rockets in horsepower?

1 vote
2 answers
150 views

Has asparagus staging (fuel crossfeed) ever been studied by a space agency?

8 votes
1 answer
740 views

What is the purpose of the shrouds surrounding these rocket engines?

1 vote
1 answer
149 views

What is the point of having a central rocket engine when it receives performance losses?

5 votes
2 answers
1k views

Resources on Coking?

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