Muulka wrote: PlatinumZealot wrote:
You need more speed for the floor to work than the wing? That's a highly generalised statement and one that that I haven't seen any proof for. Have any CL vs speed graphs for the front or rear wing compared to the floor/diffuser?
I have no proof either. I guess I need to edit my original post to be more of an opinion, but just my observation of F1 and motorsports. Under current regulations
I think the wings can give your more down-force for less speed. I only say this because in Monaco we don't see much done with the floor to make it "high down-force" - maybe because of regulations? I just never heard any talk about a high-down-force floor before. Red-bull would have used it Baku if we assume that the floor is more efficient than the wings? or in Monaco? Just my empirical observations. It is an interesting topic.
Totally incorrect- all the car's downforce is proportional to the square of the car's speed. Doesn't matter if it's underbody or aerofoil lift, it all increases the same way. The reason you don't get high- and low-downforce floors is that the floor DF is much more efficient in terms of drag- you wouldn't gain much straight line speed from having a worse floor, but you sure would lose an awful lot of grip. The rear wing has a much bigger effect on top speed, and as such that is the component they change to adjust the overall level of downforce.
This would be more true if a car was rock solid. Unfortunately it isn't. The rear of the car squats at speed changing the drag and downforce values of the rear diffuser. The squatting also decreases the angle of attack on the rear wing reducing drag and downforce. The front wings flex, even though the rule makers try their hardest to stop this, which again changes drag and downforce values.
Secondly when a team runs a smaller rear wing it will have less of an effect of the diffuser slightly reducing its effectiveness. So therefore running a smaller rear wing has a similar effect to changing the floor.
Thirdly, about having a "low downforce floor/diffuser," the teams can tune their diffuser with rear ride height, rake angles and how much they allow their car to squat under certain aerodynamic loads.