Quote:
Originally Posted by OrbitalEllipses
The thing that side skirts really do is limit the air coming underneath the car from the sides such that stability is gained...at least from my very basic understanding.
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This is true for the most part, but it depends on what's going on with the car as a whole. If you watched the Chris Harris segment on the Porsche 962, they used the air coming in from the side to feed the tunnels of the diffuser.
Quote:
Originally Posted by Shankenstein
On a similar note, the McLaren P1 and the Lamborghini Aventador have 2 layer diffusers. How effective are these at generating downforce, while still diffusing the wake cross-section?
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Double diffuser is why Brawn won in '09 and why Red Bull are three time world champions, not four. If I recall correctly they were worth about a half a second a lap.
With a proper double diffuser, there's a lot more volume to generate downforce. The upper diffuser typically starts further forward, aiding aero balance as well.