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Old Aug 23, 2010, 07:22 PM
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Propellor Stall Thrust

I recently ran into the term "Propellor Stall Thrust" when using the calculator program on the Castle Creations web site. It's the first time I have seen the term and I was wondering if anyone could define it for me.

Regardless of the definition, the results presented are interesting. The program predicts a stall thrust which is typically much lower than the static thrust. It provides a warning for certain high pitch props that it is likely that the static thrust will not be reached; the prop is in a stalled state at the initial stage of takeoff. For something like an APC 12x12, the stall thrust can be as little as 40% of the static thrust prediction. For me it makes a tremendous difference in my motor/battery selections for the airplanes that I am flying.

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