rocket thrust/mass flow rate relation in space

[caningo]

My question is simple: in space, is the thrust applied to a rocket engine directly proportional to the propellant flow rate?

If my propellant flow rate for a particular rocket is 6kg/s at full thrust... say I cut thrust to 1/4 that value, will the propellant flow rate decrease to 1/4 of the original value also (1.5 kg/s) ?

Thank you.

 

[Urwumpe]

My question is simple: in space, is the thrust applied to a rocket engine directly proportional to the propellant flow rate?

If my propellant flow rate for a particular rocket is 6kg/s at full thrust... say I cut thrust to 1/4 that value, will the propellant flow rate decrease to 1/4 of the original value also (1.5 kg/s) ?

Thank you.

In vacuum, yes.

Thrust is the product of specific impulse and mass flow.

If you are in a more or less dense atmosphere, things get more complex.

 

[caningo]

Thanks Urwumpe for the clarification and quick reply.