Alfonso Lebron wrote:

OK back from Florida, Shady Bend  and Tracy's cooling test.

I am here to say that the difficulty of cooling a Mazda rotary engine
in an airplane has been greatly exaggerated. Its a myth for sure.
People are not paying enough attention to getting the air out of
the cowl. Making the inlets larger and larger will do absolutely
no good at all unless the outlets have two or three times more area
than the inlets. All you would be doing is adding drag.

(Big snip)

For more pictures on the test see Tracy web site at:
http://www.rotaryaviation.com/

click on "What's new at RWS cooling Test."

Paul Lamar

Can only praise your efforts and findings, guys. I die of envy at this for
not having the time to invest in this research.

Thanks for your contribution.

Alfonso Lebron-Berges

Here is a picture of the velocity rake mounted under the wing
for dynamic pressure reference. The two lower tubes were used with
no velocity gradient measured indicating the lower tube was a fine 
reference tap location.

Here also is a close up of the low cost water manometer made from clear 
plastic tubing and drip irrigation fittings and tubing.
The red color in the water is from a few drops of McCormick liquid red food 
coloring dye found in the bakery supplies section of any super market.

Paul Lamar

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