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propeller in space?

Posted by: daveridge - Tue Sep 26, 2017 4:33 pm
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propeller in space?
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Author:  daveridge [ Tue Sep 26, 2017 4:33 pm ]
Post subject:  propeller in space?

Hello to everyone. I'm new to this forum , but have something on my mind concerning space flight. I know a propeller can't be used in space, but what if the propeller was encased in a metal cylinder with holes at the back. Air was then blown over the front of the propeller and ejected through those holes. Would this form a propulsion?
I look forward to reading your comments

Author:  Terraformer [ Thu Oct 12, 2017 8:34 pm ]
Post subject:  Re: propeller in space?

Well, it would *work*, but you have to carry the air. Given the very low exhaust velocity of such a system, you won't be able to go that fast.

Basically, what you'd have is a more complicated cold gas thruster.

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