American Flyer wrote:

Has anyone explored the possibility of using a prop with say
four blades (or possibly even more) of say 35" diameter with direct
drive at 6000RPM instead of a PSRU? I know very little about the
aerodynamics of props, but I assume that at least one problem is
the fact that more of the airflow would be blocked by the engine
cowling. I notice that ducted fans have far more blades, but of
course have to be ducted, making them impractical for a conventional airframe.

Harrison Young

You must be new to the list Harrison, I've been flying one for over 4
years and 425 hours.

--
Perry Mick
Custom Composite Props
mick@bridgingworlds.com
http://www.ductedfan.com

-American Flyer wrote:

Perry,

Yes, I am new to the group. I've had an interest in rotaries 
for some time, and am trying to decide just what I want to do about it.

Your airplane looks interesting, but it uses a ducted fan. 
I'm specifically curious about a more conventional prop optimized for
high RPM use. I want to have two rotaries making 400HP each, 
probably on a more conventional airframe than the EZ.

I will spend some time on your website. It looks like you 
have a lot of interesting info there. Thanks,

Harrison Young

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