Julian Vincent wrote:
>
> Are the feathers giving a conformable upper surface (presumably yes)?
> Does this retain laminar flow over the upper surface despite the
> apparent stall condition (presumably also yes, but what's the detail)?
Julian, I don't have much time right now to respond in detail, but I
wouldn't expect extensive laminar flow over the upper surface even in
cruise flight. About the best you'd hope for aft of approximately the
skeletal spar would be turbulent attached flow rather than turbulent
separated.
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