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Old 06-28-2004 | 08:09 AM
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rmh
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Default RE: Thrust calculator

Well - I have done some of this - for small props -again you can NOT tell flight performance , even based on this .
You can tell power/thrust combinations tho.
A common finding is that X power always results in a given thrust-irrespective of propellor design
BUT when flying the aircraft - the results can be very much different .
EXAMPLE: wide blade /low pitch =15 oz thrust
also narrow blade higher pitch - SAME 15 oz thrust - at SAME power input.
In flight --the results are extremely different.
This is from actual experiment and flying.

You can tell power required for thrust at given rpm - BUT the prop is still stationary, that is, not moving thru the air, so the actual perfromance is not same as prop when moving.
The theorizing is interesting but the actual data-even more so.
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