Formula 1 official website recently reported that, double DRS device on the rear wing of the Red Bull’s machine at Korean GP qualifying. Some reports previously says that they are also introduced this concept in Japanese Grand Prix and Singapore Grand Prix.
McLaren believes Red Bull new DDRS and new aerodynamic package boosted their pace, Red Bull’s step forward coinciding with its double-DRS’s debut, McLaren technical director Paddy Lowe told Autosport.
Also Lowe added that, the double-DRS are gives limited improvement, Red Bull and Mercedes currently using this concept, and he claim that it’s a difficult thing, Lotus was tested this things and they are fail.
Autosport asked, whether Red Bull’s DDRS would force McLaren to change its own plans for a device, Lowe said: “I don’t know how you would know that – that they have done a great job with it.
“They appear to have made a good step on their car – but I doubt that is all down to their system. I doubt a lot of it was down to the system actually. You will find it is just general development. It is difficult to know what they are gaining from it to be honest,” said Lowe about Red Bull’s step forward coinciding with its double-DRS’s debut.
“It is interesting, as we have had three different types of circuits – and two of them were double-DRS. Lotus has struggled a lot with its [double-DRS] ideas. One of the things you find is that the performance trade-off will be quite marginal with anything like this, which is why you haven’t seen a lot of cars rushing out. And once they have, they have all come out with different things.
“What you might gain [with aero], you might lose because of weight. It is a marginal opportunity, relative to when F-flap [F-duct] was permitted – and you had much larger gains on the table. Having shut down F-flap mostly, these are all developments of the same ideas. The gains this year are already pretty marginal and next year even those opportunities have been shut down.”
When asked if McLaren was going to introduce its own double-DRS, Lowe said: “It doesn’t necessarily mean we won’t be doing that, but we won’t do it for next year because it is [becoming] illegal.”
Formula 1 official website described the DDRS working performance – “The activation is the same – when the DRS is opened and the flap moves up, it opens a hole (where the narrow, curved grey piece is on the inside of the endplate) to channel air through the endplate. “
“Unlike the Mercedes, however, the airflow doesn’t go to the front of the car but simply down the inside of the endplate and out past the lower beam wing, shedding drag. It exits in the 15cm central section where there are no rule restrictions on the wing.”