AR3-GP wrote: ↑11 Apr 2025, 10:31
I think Mclaren has taken their noodle-nomics to the next level, attempting to "seal" the gap between the beam wing and the diffuser in the high speed corners to increase the diffuser extraction, which powers up the floor just a bit more.
Good catch, I suspected it but haven't seen a high-speed corner footage to confirm. However, they aren't going to seal the slot, they want to reduce it to increase boundary layer energising and thus local suction. This is a drag penalty on straights though. Nothing huge in either case
This behaviour is amplified when a single flap beam wing is used, when there's another flap at the front it stiffens up the endplate and this reduces flexing. Same things are happening on Red Bull and other cars when they use single-flap BW, btw
Also, due to the nature of centrifugal force bending the rear wing on the outside, the beam wing flap on the outside of the corner is dropping lower and thus increasing the load on that side by cutting the slot gap. Which is handy, since the outside half of the floor is lower to the ground and working harder and also F1 cars steer with outside wheels. Neat
