Thank you Bud for all this detailed information. I am convinced that the
Whirlwind
blade is better than the WarpDrive by a few knots at cruise, even for a 912S
Europa. I also believe the WW could be significantly improved with more twist.
That would make the center portion of the propeller disk to produce some
more thrust at cruise and therefore some more knots. Additionally, this would
also improve cooling at ground idle.
It seems to me that most of these propeller blades have been designed mainly
for
the american LSA market were there is no motivation for increased cruise
performances
as the maximum speed is limited by regulation anyway.
For non LSA, faster is always better, so may be we should persuade Whirlwind to
design a high twist blade ?
Remi
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