Pine Pienaar wrote:

Just wondered what was happening on the CS prop front??

Bill? Shall we use the Hartzel design?

I'm on hold pending airfoils from Bill Freeman.  I've given
up on copying the Hartzel planform since we have about twice
the twist in degrees.  It's harder to keep the straight trailing
edge, probably no need to.

Paul wrote:

I think we would lose little by going with a straight taper.
I wonder why we have twice the twist. The P210 is a 200 MPH airplane.

Could it be they are depitching near the hub, because the big blunt
Cessna nose slows down the air there anyway?  Bill brought this up
previously in a private message.

Perry J. Mick
Mick Duckt N7XR
http://www.ductedfan.com

That sounds plausible. If you cowl for the rotary one can make the nose much
sharper.

Paul Lamar

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