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Old 06-25-2015, 04:47 PM   #107 (permalink)
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Originally Posted by bondvagabond View Post
My shade tree engineer guess as to why this happened was that you created a wedge under your car, where the air was compressed going from the front to the back creating a bunch of drag.
Not to be nit-picking,but technically,air does not compress below 250 mph.
The 'wedge' would as you mentioned,expose otherwise shielded components,increasing interference drag,and there would be an acceleration of the air,increasing the boundary layer under there.
Since the air was acting against the underbody,it would create lift.
The angle would also change the angle of attack of all the upperbody surfaces,creating a more hostile pressure environment,which could lead to premature separation.
ALL bad!
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