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

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