Linked Questions

12
votes
5answers
3k views

Highest DC voltage ever intentionally produced in space?

Comments on the page Maximum grid voltage of ion thruster got me wondering; what is the highest DC voltage ever intentionally produced by a spacecraft in space? Photomultiplier tubes and micro-channel ...
26
votes
3answers
5k views

How hard do you have to throw something off the ISS to make it deorbit?

During Expedition 41 Reid Wiseman and Alexander Gerst replaced a failed pump on the outside of the ISS. I am guessing they took the broken pump back inside the ISS and returned it to earth in one of ...
11
votes
4answers
2k views

How can a yo-yo de-spin maneuver reverse the rotation?

I just read about yo-yo de-spin as a measure to reduce the spin of objects. The basic idea is simple and makes sense, but then I read this: As an example of yo-yo de-spin, on the Dawn Mission […] ...
3
votes
3answers
9k views

How did the GoFast 2014 Rocket de-spin?

In this awesome Youtube video of HD footage from the GoFast 2014 Rocket, a de-spin maneuver is performed. Is this a yo-yo de-spin? You can see the de-spin at 0:57 and at 3:47, where it really looks ...
3
votes
1answer
268 views

Has adjustable Yo-Yo de-spin been tested or demonstrated?

The video in the interesting question How did the GoFast 2014 Rocket de-spin? shows a de-spin that went well. An initial very fast spin (for stabilization during propulsion) is almost perfectly de-...
4
votes
1answer
239 views

Why is “Terminator Tape” electrically conductive?

A 230 foot long tape deployed from the satellite Prox-1 greatly reduced how long it took to deorbit. The tape was described as electrically conductive. Was that property intended to help the ...
0
votes
1answer
351 views

Is NASA's Performance Vehicle Calculator website open for public use?

This answer links to "NASA's Performance Vehicle Calculator" with the link https://elvperf.ksc.nasa.gov/Pages/Query.aspx I've also found the same link in https://forum.nasaspaceflight.com/index....
2
votes
1answer
157 views

What if we launched rockets from space using the slingshot method and centripetal force? Would that be possible?

Would we have to build a orbiting launch station that uses centripetal force to launch the rockets? Or a station that freely floats through space not in a planets orbit? Would something like this ...
-4
votes
1answer
215 views

Saturn Ivb accelerated [closed]

https://en.m.wikipedia.org/wiki/Saturn_V Derivation of a variant of the Tsiolkovsky rocket equation which includes gravity Take the rocket equation : v = ln(m0/mf) ve - g tburn Where tburn is time ...
2
votes
1answer
177 views

Highest velocity impact between a spacecraft and a solar system body? What about for a dedicated impactor (spacecraft component)?

In this answer I mention the proposed impact of DART: Double Asteroid Redirection Test (DART) Mission Double Asteroid Redirection Test The Double Asteroid Redirection Test (DART) Element of the ...
3
votes
0answers
149 views

What is the largest energy stored in a spring or other stress-based energy storage device ever put in space?

The question What is the largest delta-v ever produced in space from mechanically stored energy? asks of course about the delta-v produced, but here I'm asking about the largest amount of stored ...