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Old 10-05-2017, 06:40 PM   #10 (permalink)
freebeard
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I'm no expert, despite the tag somebody put under my user name. I think that's based on number of posts. See if you can lure aerohead into the thread.

Basically, fluids like air have a pressure and a velocity at any given point. You can no more push air than you can push a rope.

https://en.wikipedia.org/wiki/Bernoulli%27s_principle

The most you can do is pool it in a plenum and suck it out through a port.
IMHO, the stagnant low-pressure air in the wake will be no more effective than the high-velocity air moving over the sides of the body. think of a reverse Coanda nozzle:

https://en.wikipedia.org/wiki/Coand%C4%83_effect

The picture is poorly lighted. How close is the sketch? Three-views would be nice. Is it gas/diesel or electric?
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