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Old 09-06-2011, 01:11 AM   #33 (permalink)
Frank Lee
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Yeah, that's too extreme a "louver" and Cd would suffer. I think the key is to have the spacing close enough together to have nicely trapped rolling vortices of the sort with lateral axis', like in a pickup bed.

Louvers won't be as good as "template" but they're better than nothing. I think the XR4ti double plane spoiler is sort of a quasi-louver.
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