Newest Questions
19,830 questions
0
votes
0
answers
33
views
I plan on building a rocket engine for school project, are there any risks I should know about before doing so? [closed]
I am a student in middle school and our teacher gave us projects, I happily took rocket engine, I am a amateur on this stuff so I know how it works but I am not a engineer. It doesn't have to work but ...
- 1
6
votes
0
answers
62
views
What will Curiosity do when it no longer has any quartz cups for solid sample evolved gas analysis?
The Curiosity rover's SAM instrument has 74 cups available in which to do certain experiments. Nine of these are for "wet chemistry" experiments and 59 are for "dry" experiments; ...
- 333
-5
votes
1
answer
95
views
Has anyone had a thought about what humanity's policy should be about artificial light on the Moon? [closed]
For circa 4 or so billion years life on Earth has looked up at the funny, or awe-inspiring, thing in the sky called the Moon. Every 28 days or so it's always been "new" and then gradually ...
- 340
7
votes
3
answers
1k
views
What happens to SLS boosters when they are expended in the ocean?
I understand that the SLS solid rocket boosters and core stage are designed to be expendable, and will crash into the ocean at terminal velocity. Presumably, when that happens, it results in a large ...
- 221
2
votes
2
answers
1k
views
Could a conventional rocket design be used for SSTO if the payload was proportionally very small?
Most designs for SSTO (single-stage-to-orbit) launch vehicles that I have seen are not what you would call "conventional" rocket vehicles; they usually have wings and/or air-breathing ...
- 499
2
votes
0
answers
58
views
What robots are planned to be used on the lunar surface during the Artemis program?
And what are their purposes? I only know about one that is part of a new rover in the form of a robotic arm to collect samples.
- 3,134
4
votes
1
answer
279
views
Do the orange Artemis IVA suits include parachutes?
I know they did for the shuttle but do the Artemis derivatives also have them?
- 3,134
3
votes
0
answers
146
views
Why is the Falcon 9 rocket's gas generator exhaust outlet covered with wire mesh?
Image from https://www.thespacetechie.com/octaweb-structure/
From this image, we can see the exhaust outlets of eight gas generators (the center one's location is unclear). It's visible that the ...
- 888
0
votes
0
answers
68
views
Determine date/time to launch manned mission to mars to achieve shortest transit duration [closed]
I would like to use GMAT or other software or another reference to determine the best annual date/time of launch to achieve shortest transit duration to mars. I would also like to determine this ...
- 2,350
2
votes
0
answers
178
views
Does NASA have any plans to replace the T38 with anything else?
If yes what other aircraft will they replace it with. I understand it is critical for space flight readiness training but is aging. Or will it be retired without a replacement due to something about ...
- 3,134
0
votes
0
answers
55
views
Any information on what suit qualification runs for lunar surface EVAs are like?
I know for microgravity EVAs outside the ISS this first NBL run focuses on translation and the body restraint tether , foot restraints and the pistol grip tool. What does it look like for partial g ...
- 3,134
18
votes
3
answers
1k
views
Is there research to indicate that high CO2 levels confer radiation resistance?
I am reading Endurance by Scott Kelly. I came across a passage I found surprising. In Chapter 5, he spends a while discussing the highly elevated CO2 levels on the ISS, and talks about their CO2 ...
- 2,351
0
votes
2
answers
202
views
Looking for steps to create a CubeSat from scratch [closed]
My university professor wants to create a CubeSat and hopefully one day launch it. I am working with him on it and we are starting from scratch. I have been looking all over the internet on how to ...
- 27
0
votes
1
answer
136
views
Gravity assist influence planet velocity
I have found the physics proof that shows the module of the vectorial velocity speed variation of gravity assist for a planet at rest is at maximum twice the initial speed of the probe.
However i’m ...
0
votes
5
answers
306
views
What was used to lift the Apollo capsule off the moon and how come it took less energy to get back to earth
It took tons of fuel to leave earth from gravity and the speed of which it spins and travels thru space, big tanks of fuel and jet packs to direct it to the moon why it didn't need all that to return ...
- 11