Mike is this what you had in mind?
In a climb the bottom of the cowl is a bit higher
pressure than static. If you put the flaps in like
the foreground picture and pivot them inward  you might build some 
dynamic pressure on their face. This may impede the flow through
the rad. It looks cool but I think it may not cool as 
well as the background configuration.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site. Copyright 1998-2002 All world wide rights reserved.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org