3 ms·
Not really sloshing but you can pump fluid in tubes to mimic a reaction wheel https://ntrs.nasa.gov/citations/19910016066 https://ntrs.nasa.gov/citations/199100
by s0rce 3y ago
Not really sloshing but you can pump fluid in tubes to mimic a reaction wheel
https://ntrs.nasa.gov/citations/19910016066 https://ntrs.nasa.gov/citations/19910016066
Can also probably provide some thermal advantages as well.
Oh neat, you can use a direct current electromagnetic pump to implement this with liquid metal as the fluid 10.1016/j.actaastro.2013.11.030
- duskwuff 3y ago> Not really sloshing but you can pump fluid in tubes to mimic a reaction wheel https://ntrs.nasa.gov/citations/19910016066 https://ntrs.nasa.gov/citations/19910016066 I think that's a little different -- it's pumping liquid around to change attitude (i.e. to point the satellite in a different direction), not to affect its rotational velocity. To get a sustained rotation, you'd have to keep pumping the liquid around continuously, which isn't terribly practical. Neat idea, though! I wonder if it's being used anywhere, or if reaction wheels won out.
- jdiez17 3y agoThat’s exactly the same principle as reaction wheels. Indeed they have to keep spinning to maintain a certain angular rate.