Quote:
Originally Posted by aerohead
Both NASA and Renault published findings from wind tunnel research which included belly pans on Semis.They help.
Renault's V.I.R.A.G.E. attained Cd 0.29 in part,by the use of a full-length belly pan.Pretty sweet for 1987.
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It would seem to me that a belly pan would be more beneficial than an air dam because it doesn't increase the frontal area the way an air dam does. Do you know if they used an air dam and a belly pan or just the pan?