Questions regarding torque generation and momentum storage by the means of rotating wheels
Questions tagged [reaction-wheel]
60 questions
11
votes
4 answers
Why don't reaction wheels destabilize spacecraft over time?
Let's consider a hypothetical situation where a communications satellite is launched into orbit. However, no launch is perfect so after burnout the satellite has picked up some roll. In order to correct this roll, the reaction wheels that the…
Parker Hoyes
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7
votes
5 answers
DIY Reaction wheel and actuation accuracy
As part of a school project, I have to build my own reaction wheel to be used for an engineering model of a nanosat orbiting in the LEO. I am kind of lost as how to progress on building my own reaction wheel, and how to predict the actuation…
John
- 413
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4
votes
1 answer
Wheel to body transition matrix for four reaction wheels in case of failure of one or two wheels
It is known how reaction wheel to spacecraft body matrix is represented.
But in case of one and two reaction wheel failure condition, how the transformation to spacecraft body is represented?
Can I replace the column vectors by zeroes?
Parvez
- 49
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2
votes
0 answers
CubeSat redundant reaction wheel
3 reaction wheels are used to control the orientation of the satellite. If one wheel fails, how does the redundant wheel take its place?
Akhil Elango
- 21
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0
votes
1 answer
Is it possible angular velocity of reaction wheels become 100 deg/s or not?
Is it possible angular velocity of reaction wheels become 100 deg/s or not? I simulate the satellite with two reaction wheels, and I get the below figure for the angular velocity of the reaction wheels:
u1997
- 321
- 3
- 10
0
votes
0 answers
Impulse necessary to desaturate reaction wheel in GEO
I'm sure the answer to this question is, "it depends" but i'm just looking for a rough number
I was reading and typically 0.1N is needed but for how long does this force have to be applied? that is, how much impulse is needed?
Ricardo Casimiro
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- 13