Quote:
Originally Posted by kach22i
I like the design posted, and want to believe fast moving outer air would attach to the wing ring, while other air closer to the body would be sucked inward.
Just a want, and would need to be tested.
Maybe a giant pusher fan would get the job done.
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Theoretically, as a 'ventilated' structure, the flow is going to separate at the same location. There's no way to isolate the boundary layer from the extreme and sudden positive pressure spike of the truncation.
If it were air-tight, the flow would converge, decelerate as on a box-cavity, and when it did separate at the new trailing edge, be slower, at a much higher pressure, smaller wake, higher base pressure, and lower overall drag.
As she sits, it's an unknown quantity. Beautiful though!