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Questions tagged [cold-gas-thrusters]

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3 votes
1 answer
411 views

What does Starship use for attitude control thrusters?

What does Starship currently use for attitude control thrusters? The attitude of ITF-3 Starship appeared out of control from engine shut-down, on through re-entry. According to How does the Falcon 9 ...
-6 votes
1 answer
182 views

Windmills in Space [closed]

What if we put a windmill like we use now in space like on moon or a space station so its attached to the surface and since we have no wind we use air tanks in the blades to rotate, everytime it slows ...
17 votes
1 answer
2k views

Why does the Psyche Spacecraft use cold gas thrusters?

In a recent article on SpaceNews they write [There exist] nitrogen cold-gas thrusters that orient the spacecraft. This seems like an odd choice for me, considering it is a multi year mission that ...
2 votes
1 answer
372 views

What is the minimum number of thrusters required to control attitude, propulsion and spin?

What is the minimum number of thrusters required to control attitude, propulsion and spin? The first part of this problem (attitude) was asked in What is the minimum number of RCS thrusters capable of ...
5 votes
1 answer
231 views

Solenoid delay when deactivating cold gas thrusters?

Cold gas thrusters fire only after a short delay due to solenoid activation dynamics. The delay depends on the thrusters but I've seen numbers ~ 5 ms. What I'm wondering: Is there a similar delay when ...
5 votes
0 answers
391 views

Do cold gas thrusters fueled by supercritical CO2 have a higher Isp than those fueled by liquid CO2?

The private space company Pixar has developed an autonomous space vehicle (Wall-e) propelled by a cold gas thruster Hand-Held Maneuvering Unit as demonstrated in this press release: From https://...
71 votes
2 answers
7k views

Can a human land on Deimos using pressurized deodorant cans?

Can an astronaut use deodorant sprays which contain pressurized butane as cold gas thrusters to land on Deimos from Deimos' orbit? If yes, how many cans would be required to get 5 m/s of delta-v for a ...
1 vote
1 answer
290 views

Cold Gas Thruster to space engineering challenges

I have seen this question. The natural extension of this question would be - could you lift a human or an equivalent payload to LEO with cold gas thruster only? For numbers, take 100 kg mass for the ...
4 votes
0 answers
177 views

What equation is being used- chamber pressure v.s. mass flow rate? (Cold-gas thruster)

I am doing a project on cold gas thrusters and have seen a couple of graphs relating chamber pressure against mass flow rate. I can't seem to find the equation that relates these two parameters to ...
4 votes
0 answers
303 views

Falcon 9 cold gas thrusters: why in line with grid fins?

The cold gas thrusters of the Falcon 9 are right in line with the grid fins. The grid fins deploy immediately after MECO and stay deployed while the cold gas thrusters fire. And it seems the expelled ...