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Peter,
Â
I did not mean to imply your cooler installation will not
contribute to the problem - in flight you will expect high speed air to make an almost ninety degree turn. The assumption is that the upper cowl pressure is greater than the lower cowl pressure to force sufficient air through the cooler. That is even while the air is being tripped over the vanes at an almost 90 degree angle. At slower speeds (fast taxi tests), neither the pressure differential nor the turning of the air is as much of a problem. Â
Grayhawk
Â
In a message dated 6/12/2013 8:36:40 A.M. Central Daylight Time,
air.peter [at] googlemail.com writes:
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