Hello Paul,

Is there a formula even approximate that would
equate prop RPM, Diameter and pitch to HP?

I know HP increases with the square of prop RPM
but it must be possible to get a better relationship,
or am I dreaming?

Thanks,

JP

Vance on here has some prop software written in BASIC.
Last I heard he was in the hosipiatal.
But here are a few of his programs you can expierment with.
And some others I think.

Paul Lamar ...No rotor no motor.

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