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Old 11-18-2020, 05:06 PM   #96 (permalink)
aerohead
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no reference

Quote:
Originally Posted by JulianEdgar View Post
I am sorry, but now you are just making things up. There is no reference whatsoever to a template in SAE Paper Number 2011-01-0175, the development of the Audi A7 Sportback.
You sir, are mistaken.
A blueprint of the Audi A 7, and Audi's video about the A7 revealed that, on comparison to the template, the template predicted the separation on the A7 exactly as reported.
The paper goes on to discuss how Audi pushed the spoiler up level, through the separated flow to the template contour ( from the blueprint ), to first kill the separation / lift, then angled the spoiler up another 30cm higher to achieve additional direct downforce ( also from the blueprint ).
* The Audi had separation which you've claimed is impossible.
* The Audi had attached longitudinal vortices which you've claimed is impossible.
* The Audi had vortex-induced downwash which you've claimed is impossible.
* The Audi had separation-induced rear lift which you've claimed is impossible.
* By doing everything I've advocated, Audi was able to reduce rear lift as well as drag, by respecting the template, exactly as Hucho explained in his 2nd-Edition.
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