Quote:
Originally Posted by freebeard
Yeah, I read all that but I still don't grok the wings part
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No wings!
Just the wing profile:
So from Above; picture that, mirrored on the Chord line, with a car sticking out the front, going left, instead of the leading edge/s.
See the similarity between wing and boat tail now??
Now the angle of the boat-tail to wind direction increased (by ~17+ more deg on average), so that it's length is dramatically decreased.
ie: DBD would/could make for much shorter, more convenient, lighter boat tails, without the flow separation that would normally happen.
One might even incorporate a 'Weathercock Switch' to manipulate the DBD, to minimize buffeting And improve cornering. As just 'invented' be me!
(Similarly that 'Fake Feathers' thing I posted about.
But they work by stopping the reverse flow one normally gets on a wing's top trailing edge, turning what's left of it into a 'push'.
No power reqd)