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Old 11-17-2008, 08:59 PM   #53 (permalink)
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Originally Posted by Christ View Post
except when you compare overall drag to complete frontal area of the vehicle, you get a true indication of exactly how aero it is.
But Cd is not the overall drag, it's purely a function of shape. A toy model of your van will still have the same Cd. To get total drag, you multiply the Cd by the cross-section area.
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