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Old 25th Apr 2014, 07:15
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henry_crun
 
Join Date: Dec 2013
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Tough assignment. You can get a very approximate answer to prop-rotor thrust and efficiency by comparing mv (momentum and thrust) with half m v squared (energy and power) for your chosen disc area. I think I saw a full analysis by von Karman.

An important practical challenge is sorting out the blade twist, which is a compromise between hover and forward flight.

Sorry, can't help any more, way beyond my primitive academic level!

PS - here's a comparison chart I did many years ago, not sure how accurate it is:

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