Quote:
Originally Posted by aerohead
I'm not certain that the wheel well aft of the tire catches any air at all in the context of a parachute.A parachutes drag is created from the all-separation,enormous turbulent wake above it.
A pool of dead air may just travel along with the quarter panel,as with a rear bumper,with the active flow just ricocheting off the dead air.
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I have never quite understood this dead air theory.
What bothers me is air is highly compressible so the layer of air is more likely a turbulent area for me, with air coming in and out and maybe some air staying deep down.
I can only think about it like coffee cup you would try to fill with the tap wide open. The dead content of it would be quite shallow and you would end up with water all around ...