bryan.wilkinson wrote:

SNIP
 I see more and more armpit scoops on all kinds of
canards as I travel around to airshows and on canards that
visit Santa Paula. The big advantage is they are simple to build
as you don't have to worry about taking in the boundry layer.
It is very thin in that area because of high pressure.

On a lot of jet aircraft , you will see a thin secondary intake around
the main inlet { Mig 21 , BAC lightning }  to literally suck in the
boundary layer. Maybe something similar could be applied to boundary
problems on cooling ducts ?

 
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