Quote:
Originally Posted by aerohead
typically,compressibility effects are not encountered in automobiles until above 250 mph.
Pressure differentials will cause lift whether a function of velocity or separation/turbulence.
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yup, i know; what i said was in reference to what someone else said.
yes, but both of those are normally produced more over top of a vehicle, then under; are they not?, so lift is not an increase in pressure under a vehicle but a loss of pressure over top of the vehicle.(even without a skinned under carriage)
where as an air dam is used more to equalize the pressures bottom to top(along with decreasing cd due to not hitting control arms and other low hanging parts)