Quote:
pressure increased in the wheel well creates drag and lift both and noise. the vents all the air to exit out of the high pressure wheel wells
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Your just restating the most obvious thing. My example was from 1981.
It doesn't answer what is a 'separation trap' anyway. How does it differ from a Faschenfeld tearing edge [as seen on the new Prius]. It's in the bumper, is that them below the reflectors?
Here's a properly designed front fender.
This one has a tight raidius, but massive venting on the top.