George Lendich wrote:

A Focke Wulf 190D Dora had a real ram air scoop for its
Jumo 2000 HP 212E V12 engine. It also used ring radiators
inside the cowl with nice cowl flaps.

Paul Lamar

Paul,
Ring or tube radiators, are something I considered some time ago for
installations where a flat rad couldn't be used easily- do you have any
further info on those,
George ( down under)

Hoerner had some data in his book Fluid Dynamic Drag.

Paul Lamar
 
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