This is a recording.
Again the fundamental problem is: NACA ducts are not designed to work with
heat exchangers. The boundry layer is not the problem.
A P51 style duct is called for on pushers for feeding heat exchangers.

Paul Lamar

a word about recorded messages:
Greg's plane comes off the runway like it was catapulted and continues to accelerate  then it hits
a point where the drag of the (3) P-51 scoops just stops the acceleration and no amount of more
applied power will budge it. He and anouther pilot that has flown it agree there is a need for a
bit more prop but both agree the drag is kiling the performance.
...Chrissi

Cozy Mk-IV 13B-turbo
www.CozyGirrrl.com
Chrissi@BlueMountainAvionics.com

Really? Have you tried 2000 HP? Perhaps you need to squirt some of that
hot air aft and gain a bit of thrust :-)

I don't buy that Chrissi. Not all P51 duct systems are created equal.
Here is a picture of a liquid cooled engine powered airplane with P51 duct that
is just about the fastest canard in the world. Right behind Klause.
236 MPH. No were near 2000 HP.  Just 250 HP like Greg's airplane.


Paul Lamar
 
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