gluon wrote: ↑27 Mar 2022, 16:43
What if a very slight rake angle helps with porpoising?
No. While initially the gap between floor and road will be higher, this will compress and lead to a similar situation.
What also is an issue is the design of these floors and the lack of aerodynamic aids. The diffuser will already be designed to it's maximum spec, thus any added angle will just lead to stall.
To explain it simply(because I don't know the physics behind it either), due to the throat there is a significant increase in airflow(compared to previously), this isn't a problem in its own right, but as the car drops due to aerodynamic load, the airflow has to flow through an increasingly smaller gap, which will accelerate the airflow, and this accelerated airflow becomes too fast to stay attached.
This essentially makes the solution itself very, very simple; increase the gap through which the air can flow. What makes it complex, however, is that this solution comes with some big deficits. Mainly a loss in downforce.