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Old 05-16-2012, 06:08 PM   #18 (permalink)
aerohead
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better than no.............

Quote:
Originally Posted by SvdM View Post
Makes one wonder why they didn't just truncate it with a hard edge for clean detachment, but I guess even this bad stub tail is better than no tail for drag?
I've never seen a technical term for it so far,but it appears that a mediocre tail can performing a 'wake stuffing' function,creating a physical boundary for which the turbulence cannot enter,sort of reinforcing the flow from the inside out.
Carl Breer did this with the 1934-1/2 De Soto Airflow test mule on which a hypo-template boat tail helped the car achieve Cd 0.244.
Hucho has mentioned that by simply placing mannequins inside an open convertible,that lower drag can be measured in the wind tunnel.
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