3 ms·
Two wheels, or a movable wheel, or a "ball" that you can actuate in two directions do it. Of course, you probably also have thrusters (to "spin down the wheels
by mlyle 4y ago
Two wheels, or a movable wheel, or a "ball" that you can actuate in two directions do it.
Of course, you probably also have thrusters (to "spin down the wheels" when they accumulate speed from outside forces), magnetorquers, passive stabilization mechanisms, etc.
- detrites 4y agoMagnetorquers, very interesting - electromagnets that couple with the earth's magnetic field to assist with attitude/stabilisation: https://en.m.wikipedia.org/wiki/Magnetorquer https://en.m.wikipedia.org/wiki/Magnetorquer
- mlyle 4y agoYup. There have even been satellites that have used only passive stabilization--- a permanent magnet + dark/light surfaces that spin it up from photon pressure.
- addaon 4y agoAnd even more entertaining, these are off-the-shelf parts at this point. https://www.cubesatshop.com/product/isis-magnetorquer-board/ https://www.cubesatshop.com/product/isis-magnetorquer-board/