Questions tagged [operations]

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23
votes
3answers
25k views

How closely spaced are satellites at GEO?

As the picture below (kind of) shows, there are lots of satellites in geostationary orbit. Couple this with the fact that certain longitudes are more desirable than others (like above North America or ...
15
votes
2answers
905 views

How did the US government shutdown of 2013 affect NASA operations?

At midnight on October 1, 2013 the US government entered the state of government shutdown where all functions deemed non-essential are suspended. This shutdown lasted 16 days. How did this shutdown ...
16
votes
2answers
5k views

How often must the ISS desaturate its control moment gyros?

I understand ISS uses control moment gyros as the primary attitude control system. As the article states, CMGs eventually get "saturated", a state in which they can no longer absorb momentum. This can ...
4
votes
1answer
215 views

Did moving a Shuttle Remote Manipulator System (RMS) from one Orbiter to another have any impact on operations?

This question Did each Shuttle have its own dedicated Canadarm? and its answer discuss the five different robot arms used in the shuttle program and how they were moved from Orbiter to Orbiter. ...
2
votes
0answers
17 views

NanoSat/Small Satellite World Record

I have been trying to understand, small sat within 10-30 kg satellite what has been the longest operating satellite? Generally life of such missions is 6 months. Other heavy duty class satellite have, ...