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Old May 18, 2002, 12:12 PM
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Dallas,TX, USA
Joined Mar 1999
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Larry,
CT0=CP0*1.727*(1.97-PTD) where PTD is the pitch/diameter and CP0 is the power coefficient=(hp*550)/(rho*(RPM/60)^3*(Dia/12)^4. Most of this work was performed in the 1920's by NACA using 2 blade wood propellers.
For an APC 10x4 running at 10000 RPM and SL, I get CP0=0.03775, CT0=0.1023 and static thrust=3.26lbs.
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