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Old 04-17-2020, 01:03 PM   #210 (permalink)
aerohead
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rear lift

Quote:
Originally Posted by JulianEdgar View Post
https://youtu.be/cOpuT10kDPw

Interesting rear aero on the latest Porsche Cayenne.
I'm guessing that,the slanted backlight is a concession to styling.Had Porsche simply extended the roof profile rearwards,achieving a traditional Kamm/Fachsenfeld truncation,that all rear lift would be cancelled.With the unitary separation line,pressure recovery would have improved on the greenhouse,yielding a higher base pressure and reduced pressure drag,and overall drag reduction.Static loading on the rear axle would probably have been just fine,even flat out on the Autobahn.
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