Hovepeter wrote:
can someone tell me why they are doing that? i heard that these slots helps the cars aero during cornering to get more efficient downforce is that right? is there anything these slots does that makes the car less efficient at a straight line and there for not suits hockenheim? sorry for the bad english.
wesley123 wrote:Those slots are in the wing to give a more consistent level of downforce. By getting more air under the wing the flow under the wing is more consistent, thus, there is less loss in downforce.
The wings change a little in that aspect. The one with one slot in the main plane also has the main plane raised overall, improving flow under the wing.
Changes like these (raising the mainplane or more slots in the wing) give more consistent levels of downforce at the expense of peak downforce.
turbof1 wrote:
The elements are there to keep airflow attached and thus the downforce level consistent, but it comes at a price in terms of drag.
I even believe a non-slotted surface, as long as it doesn't stall, is more efficient since you don't sacrifice any surface for slots.
Ferrari lowered the angle of attack of the upper elements, lower the overall AoA of the entire wing. It could mean that the stalling treshold was pushed further up, allowing them to ditch one slot.
I can not say that I'm sure.... but from my POV - that slot in the mainplane is ommited not because of FW downforce, or FW downforce/drag ratio.
Slot less is because of managing underwing vortex, and airflow around front wheel(s).
Also - if you look closer, there is not only one slot less in the mainplane... the footplate kink/notch is less aggresive, too.
Like old folks say: A picture is worth thousand words.

Silverstone test, 10 days ago.
First run with a new FW, and Ferrari aero guys are looking for FW wake and airflow around front wheel.