Questions tagged [operations]

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3
votes
1answer
169 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. ...
4
votes
0answers
148 views

How much in revenue did NASA report for the US fiscal 2016?

In US dollars, how much revenue did NASA project in 2015 for its fiscal 2016 budget and what percentage was manifested during or before Q4 2016? The answer may include departmental, management or ...
14
votes
1answer
481 views

Is DRAKON Still in use Today?

DRAKON is a Russian language standard programming interface which was created for the Soviet space program. It had the added benefit of being a visual language, and possibly the first for the Soviet ...
10
votes
1answer
678 views

Why do KSC crawler-transporters use caterpillar treads instead of rail tracks?

The two Kennedy Space Center crawler-transporters, used to transport Saturn V, Shuttle and SLS rockets to the launchpad, move on caterpillar treads: Here's a SpaceFlight Insider video clip about ...
21
votes
3answers
21k 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 ...
9
votes
2answers
496 views

Can safe mode on a spacecraft be bypassed?

A sort of followup to Are any software updates scheduled for Juno? For the purpose of illustration, seeing that Juno has most recently encountered such an issue, I mention Juno here. However the ...
15
votes
2answers
845 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 ...
8
votes
2answers
8k views

What's the maximum amount of time the ISS can go between resupply runs?

Typically a cadence of one resupply mission every couple months is maintained. If this cadence were to be interrupted for whatever reason, how long could, say, the current crew size of three members ...
14
votes
1answer
226 views

If I am a spacecraft operator, at what space weather activity levels do I start getting nervous?

Say I operate a satellite in LEO, and I think I have instruments on board that will be sensitive to space weather events. If I keep an eye on space weather activity levels, when do I start turning off ...
16
votes
2answers
4k 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 ...