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Old 05-14-2020, 05:16 PM   #26 (permalink)
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Originally Posted by j-c-c View Post
"Biplane spoiler" or Hybrid aero device, or Wing supplemented with a spoiler, which can be rather dubious in that one can deduct effectiveness, depending on orientation to each other, from the other, unless cosmetic enhancement is the primary goal, in that it sells cars and earns profits, from the punters, IMO.

And I also don't see a lot of commonality with OP's pictured "guess" example.
Yes, I have always wondered how this was supposed to work. Has anyone ever seen a tech paper on this type of design? It would be really interesting to see some tuft testing.
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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