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Mercedes Chief Technology Officer Allison expects to return to F1 downforce level in 2019 | F1 News – Motorsports

James Allison, technical director of Mercedes, believes that changes in F1’s aerodynamic rules mandated this season will initially reduce performance to 2019 levels.

Changes introduced to reduce the load on Pirelli’s tires by counteracting the natural increase in downforce that the team will make in the 2021 car if freezes affecting other aspects of the package do not limit aero development it was done.

Following the first change to the floor, three minor adjustments were made. It was agreed in late 2020.

In a Mercedes video, Allison states that what appears to be four relatively small changes leads to a significant overall reduction in downforce.

“By combining these four effects in their most raw form, the car’s performance will return to near 2019 levels simply by cutting off and trimming back in the manner required by the rules.

“It has been our challenge for weeks and months since these rules were finalized to restore performance as much as possible.

plus: What you will see when you first see the 2021 F1 Aero Rules

“It was a very interesting vehicle in the wind tunnel and CFD to ensure that its performance was returned to the car as much as possible.”

“There’s a triangular notch on the edge of the floor in front of the rear wheels, and when you look at it you’ll think it doesn’t look that big, but if it’s the most raw form in itself, just cut off that area from the car. So, I’m about one lap away from the car.

“At the rear of the car below the diffuser area, the fence was lowered and we couldn’t get close to the ground. [and] You can’t create a good aerodynamic seal against the ground like you used to. And again, they shed a lot of downforce when trimmed upwards.

Pirelli’s 2019 tires were expected to be carried over to the third season of 2021, so changes were required.

But in the end, this year’s construction was changed to make the tires more durable, and the front profile was changed, giving the team another variable to deal with.

Structural changes also mean that the 2021 tire set is about 3kg heavier.

“We first got a glimpse of these new tires at Portimao in 2020,” Alison said.

“I had two other opportunities to test. They were in Bahrain and last year’s last race in Abu Dhabi.

“These tires affect the performance of the car and the way the aerodynamic platform is designed, so there aren’t many opportunities to put on new tires and prepare for the new season. You have to set up the car. How not to be.

“So it was a big challenge for us to extend the test data we had on last year’s truck and make as much as we could from the tire data provided by Pirelli.”

– Motorsports

Mercedes Chief Technology Officer Allison expects to return to F1 downforce level in 2019 | F1 News

https://www.autosport.com/f1/news/154768/mercedes-expects-return-to-2019-f1-downforce-levels Mercedes Chief Technology Officer Allison expects to return to F1 downforce level in 2019 | F1 News

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