Quote:
Originally Posted by j-c-c
I agree, two main sources of aero drag I see here, induced drag on the car body by maybe adding air where it disturbs the existing proper/acceptable air flow, and rotational air drag of the rotating wheel. Removing under car air for DF is most efficient energy wise achieved passively I believe. A wheel design for such task unfortunately is fixed, and unable to be tweaked as needed for the operating conditions. It was a solution on race cars in late 70's and faded away, for reasons I am uncertain about.
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PORSCHE used 'fan' wheels for at least one season on it's IMSA GTP cars ( perhaps taking advantage of a 'hole' in the 'Rulebook', as Adrian Newey of Red Bull Formula-One is famous for ).
And then 'fading' from view the next season, as IMSA 'regulated' the technology out of existence ( like Phil Hill's 'vacuum-cleaner' Chaparral 2J ).
