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Author Topic: Propeller length/rpm to lift weight ratio.  (Read 961 times)

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Offline Mr. NinjaTopic starter

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Propeller length/rpm to lift weight ratio.
« on: July 21, 2012, 09:55:39 PM »
Hi,

I am in the design process of a quadrotor helicoptor (might not get past that, lol) and I was wondering, how do you calculate the lift power of a propeller (four blades) at x diameter and x rpm?

I'm looking at a weight of 25-30 pounds, with an optimum lifting power of 35-40 to overengineer and allow for gaining height (it's a big 'un), and would need to know this to know the sizing of the rotors.

Thanks,
Mr. Ninja

Offline waltr

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Re: Propeller length/rpm to lift weight ratio.
« Reply #1 on: July 27, 2012, 09:08:56 PM »
Try googling "propeller thrust"

 


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