"Robinson, Chad" wrote:

Here is a picture of what I am talking about regarding Perry's rad
air exit duct for the new people.

Paul/Perry, either of you have a photo that shows more of the air
guide/scoop leading to the nose from the rad? I'm very curious about
its shape. I know - no NACA scoop - but what do I put there instead?

Thanks,
Chad

If you are referring to the water rad yes I have more pictures. There is a
NACA scoop but Perry's powerful ducted fan sucks air
through the rad.  His water cooling system does not rely on dynamic pressure
alone as most cooling systems do.

Paul Lamar

"Noonan, Nathanial" wrote:

I know I'm a little new but I had an idea about replicating Perry's massive
pressure delta.  This is based on the pusher concept.

I guess I would need to put this in Inventor but my idea is based on
creating a mini duct that is centered on the drive shaft.  Prior to the
shaft exiting the cowling you would create a ducted section that would turn
at 1 to 1.  This ducted section would increase the pressure drop across any
heat exchanger forward of it's position.  This way you would eliminate the
heat build up on runup.

The shaft would continue on to the extension prop and Hershey kiss.

I don't if anyone understand what I'm trying to explain but I will sketch it
up and release.

The only problem I see is making sure to ensure the pitch and clearance are
robust enough to handle the proposed rpm.

I would also make sure it failed safely. :)

Aerocanard builder :)

Redheaded step child of the canard community.

 
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