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ikrase's user avatar
ikrase
  • Member for 3 years, 3 months
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33 votes
4 answers
12k views

Was the Space Shuttle ever actually intended for the military to steal satellites without the owner's consent?

29 votes
2 answers
5k views

Ultimate fate of rocket propellant in space?

28 votes
7 answers
6k views

Curiosity and Perseverance landing - with so much dust blown everywhere, what's the point of the skycrane?

24 votes
1 answer
5k views

What actually is RP-1, and how is it different from any other hydrocarbon liquid fuel?

23 votes
3 answers
3k views

How dangerous are RCS thrusters?

16 votes
0 answers
350 views

Has NASA ever included a ground controller or astronaut becoming insane/irrational/uncooperative in a training simulation?

13 votes
3 answers
578 views

Can I make a completely ITAR-free spaceship?

13 votes
3 answers
3k views

Why do many RTGs have finned heatsinks, when this is considered bad for radiation heat transfer?

10 votes
1 answer
467 views

Why so many laptops on the ISS?

7 votes
1 answer
147 views

Is there a rule of thumb for the mass of thermal protection systems?

7 votes
1 answer
880 views

Why is RP-1 dyed red?

7 votes
1 answer
230 views

Do any spacesuit designs (including prototypes, conceptual, etc) use radiators rather than open-loop cooling?

7 votes
6 answers
739 views

Has any rocket been launched into orbit from a plain flat surface?

7 votes
2 answers
1k views

Is the propulsion for the Scorpion nuclear-thermal-electric ship concept viable and credible?

6 votes
0 answers
226 views

Are DUMBO, TIMBERWIND, and other high-thrust NTRs realistically going to deliver on promises of very high thrust/weight?

6 votes
1 answer
228 views

What's up with the lack of subminiature chemical rockets?

6 votes
2 answers
411 views

Hydrocarbon + Nitrous Oxide: Is this a "friendly" alternative propellant system to hydrazine and NTO?

6 votes
1 answer
442 views

Can I release rocket plans or software under open-source licensing without running afoul of ITAR?

6 votes
1 answer
203 views

Burning Up Hydrazine and N2O4 for Safety

5 votes
1 answer
185 views

How much thrust is "high" thrust (for orbital transfers)

5 votes
1 answer
88 views

Does a published account of the economics of Russian debris shipbreaking exist?

5 votes
1 answer
127 views

What is the limit on ISP for cooled physical nozzles -- and how hard is it?

4 votes
1 answer
428 views

LANTR has been proposed; why not bilateral CHEMANTR?

4 votes
2 answers
454 views

Space Shuttle type tiles, or something similar: Commercially available?

4 votes
0 answers
191 views

Do vacuum-grade oils and greases trivially solve the "lubricants don't work in space, cold welding happens" problem (for short to moderate duration)?

4 votes
1 answer
192 views

How badly would commodity handheld power tools, with cheap "duct tape" modifications, work in (EVA) space?

4 votes
1 answer
255 views

Why isn't "cylindrical alien derelict spacecraft" more common in theories of Oumuamua as an alien probe?

4 votes
1 answer
189 views

What prompted NASA to establish a KSC SWAT Team?

3 votes
1 answer
317 views

Would Kessler Syndrome feasibly get bad enough to prevent punching through to higher orbits?

3 votes
1 answer
168 views

Is there any way to get better performance from an NTR with non-H2 propellant?