PlatinumZealot wrote: ↑
Tue Aug 15, 2017 5:01 am
Great post. =D> I know ALOT of work you really had to put in to come to these many conclusions. Interesting recommendations. Very comprehensive too. I have a question though. Would your design be slower than the current cars or will the active suspension and aero make up for it?
I have done some studies on not only the increase in downforce under the car (less reliance on Y250 and other "tricks") but also the addition of energy to the wake using a fan... I think this is the future. I presented it here:
Different elements of the concept would reduce or increase the lap-time, doing a very basic analysis with assumed constants around the lap I get a small improvement of 0.2-0.3s. Power is reduced in line with drag to maintain a similar Vmax and power-to-weight (~1350bhp/tonne). Reducing the mass should have the biggest impact on lap-time.
Variable | 2017 | Target | delta | delta time
Downforce | -5.1 | -4.0 | -22% | +1.8s
Drag | 1.3 | 1.0 | -22% | -1.5s
Power | 745kW | 600kW | -19% | +2.6s
Mass | 728kg | 605kg | -17% | -3.2s
The drag target is with the aero trimmed on straights so drag will be higher in corners, though the active suspension helps in corners because downforce and balance are consistent through braking, cornering and then acceleration. It would be better to put the numbers into a lap simulation for various circuits and get an actual delta to a 2017 car, but I don't have all the relevant data or a lap simulator.
I'm personally not a fan of fans *badum tsh* primarily because of the risk of debris, not just for other drivers (I think helmets and visors are better now then when Helmut Marco lost sight in his eye) but for marshals and spectators. Any mesh or gauze put over the exit to catch debris will just make the system less efficient. I can also imagine over a race distance it would also become clogged with rubber and stones. I don't know how the fan would cope with low velocity and pressure from the wake of an upstream car, would it not need to increase power to create the same pressure under the car?
One advantage I can think of is as a means of equalizing downforce. If the FIA measures static pressure under the car then adjusts the fans power team-by-team.