Ken Powell wrote:

Paul,
As you know we keep exploring this subject and learning from the

experiences of those flying as well as the technical work of Fred Morino and
others.  With this in mind I would like to remind everyone that with an

intake on the nose of the airplane that external diffusion is taking

place.  We determined (I think) that there is not much of a penalty for a
larger opening in this location.  I suspect that the real advantages that we

are seeing on aircraft with small air intakes is because of changes under

the cowling, not the small openings themselves.  Certainly there is a huge
amount of attention being placed on the aerodynamic profiles of the opening
themselves as well.

Ken Powell
kenpowell@aristotle.net

Bill Freeman wrote:

Absolutely, Ken.   Many folks keep forgetting the free, efficient diffusion that
takes place (whether you want it or not!) at the front of your airplane.
This is
why this is a good place for inlets.  DUH!  ;-)

Bill Freeman

 
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