Quote:
Originally Posted by aerohead
In the mod-data sticky there is some data from GM's wind tunnel development work for their Pontiac Trans Am Firebird at the Lockheed Marietta,Georgia facility.
They did comprehensive evaluations of wheel covers and their 'MOONesque' cover delivered the lowest drag.
Boeing uses them on everything they build for Southwest Airlines,and all the fastest LSR streamliners typically use them at Bonneville,as does Danika Patrick on her Indycars (both in and outside application).
The subtle convexity lowers drag (as with GOODYEAR's streamline tires for aircraft) compared to a flat disc and they are very strong for their thickness and are not subject to flutter.
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I checked all nine pages of that thread and could not find that data.
Are you sure it isn't somewhere else?