Linked Questions

12 votes
5 answers
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 ...
uhoh's user avatar
  • 149k
28 votes
3 answers
7k 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 ...
Wolter's user avatar
  • 383
6 votes
3 answers
13k 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 ...
Steve's user avatar
  • 1,174
12 votes
4 answers
3k 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 […] ...
Ingo Bürk's user avatar
3 votes
1 answer
422 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-...
uhoh's user avatar
  • 149k
5 votes
1 answer
324 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 ...
Camille Goudeseune's user avatar
1 vote
1 answer
317 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 ...
user39045's user avatar
0 votes
1 answer
495 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....
uhoh's user avatar
  • 149k
-4 votes
1 answer
282 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 ...
user26126's user avatar
2 votes
1 answer
225 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 ...
uhoh's user avatar
  • 149k
4 votes
0 answers
222 views

Fastest Manmade Object

I remember reading somewhere that during the cold war, a nuclear weapon was placed underground with a manhole cover on-top and then detonated. I'm pretty sure the manhole cover then went orbital ...
und3niable's user avatar
3 votes
0 answers
217 views

What is the largest energy stored in a spring or other stress-based energy storage device that's ever been 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 ...
uhoh's user avatar
  • 149k