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Old 05-11-2020, 03:47 PM   #7 (permalink)
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Originally Posted by aerohead View Post
If the extension is elongated along the streamlined 'template' contour,and a side curtain is extended downwards to close the underside gap,such that creates the 'K' truncation,no separated flow will exists 'above' the aft-body,and all low-pressure,base pressure will be acting longitudinally,behind the vehicle as a drogue effect,with zero lift.Streamline bodies are incapable of generating lift.
Did you look at the video I did on the Porsche Cayenne, linked in the above post? They quote real data from a real car which supports what I said. (And of course, there are plenty of other examples of this on other cars.)

And streamline bodies cannot create lift? Unless you are using a unique definition of what streamlining comprises, streamline bodies can certainly create lift!
Modifying the Aerodynamics of Your Road Car

A really good book that should be added to the library of everyone working in automotive aerodynamics, as well as those making car aero modifications at home. - Rob Palin, former Tesla aerodynamicist
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