Quote:
Originally Posted by fbov
For Cd, perhaps, but reducing a rectangular vehicle's Cd comes at a cost to crosswind stability. Do you really want an RV that steers off the road in a crosswind? Hucho includes a study of crosswind stability vs. body shape, showing the progressive reduction in stability as Cd is reduced.
That's why RV's are all rectangular boxes, and all 911's have rear wings, too.
Have fun,
Frank
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I believe that Professor Alberto Morelli's 1978 research at the Pininfarina wind tunnel gave us an out with respect to low drag and directional stability.
He found that he could straightforwardly tune the center of pressure to compensate for center of gravity bias.