27-05-2022, 11:59
(26-05-2022, 23:41)taik escribió: Es una entrevista a Newey de hace casi un mes. Al final del suelo solo vemos lo que vemos y, aunque pueda parecer decepcionante lo que traigan mañana, la clave está debajo.
https://the-race.com/formula-1/newey-in-...etirement/
“We knew it was a potential problem. The LMP cars had it for a very long time. It’s a very well-known problem. If you have an aero map which as you get closer to the ground generates more downforce eventually the flow structure breaks down and loses downforce, then it’s going to porpoise. With these regs you could see that was a possibility but whether they would and how you model that, was the difficulty.
“It was a bit of using experience as to what the causes of porpoising might be and trying to be mindful of that but at the same time we didn’t find a way of modelling it properly. In principle, you could do it in the windtunnel. There’s a thing called Strouhal number which is a bit like a Reynolds number, so it takes the speed and the size of the real thing, then applies a scaling factor based on speed and size.
“It’s much more aggressive than Reynolds number in that these cars are bouncing along at let’s say 6Hz then the frequency you have to achieve on a 60% model at 60 metres/second is very high. If you completely redesigned your model and beefed up everything and accepted less fidelity in the balance you might get there but it would be a big undertaking.”
He’s naturally reluctant to get too detailed about what they did at Red Bull to make the RB18 almost immune to the problem while still generating very competitive downforce. He makes the point that there is not just one airflow under the floor and that getting them working together is important but even that is only a tentative clue.
Estaba claro, al final Newey declara que Renault jamás será como Red Bull porque sus metas son más de marketing y mantenerse en la categoría que la de competir para ganar un mundial.