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What Mercedes' new front wing tells us about its F1 recovery plan

Mercedes revealed the first stage of its mid-season upgrade push at Formula 1’s Monaco Grand Prix, as George Russell got use of a new front wing.

George Russell, Mercedes W15

The design is a clear philosophy departure from what the team started the season with, and points to a shift of approach as the German manufacturer aims to get its W15 performing better across a range of speeds.

Early-season analysis of the silver arrow highlighted that its performance profile was too narrow – it was either competitive in high-speed corners but then lacking at slower ones, or was the opposite in being good in low-speed turns but then suffering in quick curves.

As previously reported, the team’s trackside engineering director Andrew Shovlin had likened the squad’s situation to that of having too small a duvet – in that it covered either the toes or the head but not both.

The challenge for Mercedes has been in finding what is needed to make the duvet bigger – so its car works at all speed ranges.

As team boss Toto Wolff said: “Shov is great with metaphors, and what we are doing now is probably solving that. I don't think that the duvet is large enough to cover feet and head at this stage, but we're getting there.

“[The next race] in Montreal is a little bit of an outlier of a track, but we're going to add something there, and we're going to add something for Barcelona - to just try to chip away, bearing in mind there could be also setbacks.”

What has changed with the new wing

Mercedes W15 front wing Monaco GP comparison

059-24-MERCEDES-FRONT-WING-MONACO-COMPARISON

Mercedes W15 front wing Monaco GP comparison 059-24-MERCEDES-FRONT-WING-MONACO-COMPARISON

Photo by: Giorgio Piola

The new front wing design is a complete overhaul, with the novel upper flap design it introduced at the start of the season (red arrow) abandoned in favour of a full-span solution.

This has resulted in the inboard, non-moveable sections beside the nose being narrowed, whilst the adjustable section of the two upper flaps are now wider than before.

The biggest gain from this should be in providing the team with more versatility when setting up the car, which appears to be key in getting it to perform well across different speed ranges.

These changes have also resulted in the body and tip section of the nose being altered to suit, which also triggered a change in shape for the mainplane ahead.

This is best seen in the shape of the mainplane, as it is now a little flatter across the central span (see red line for comparison).

Meanwhile, the outboard section of the mainplane has also undergone some minor surgery, as the leading edge is no longer kinked in the outboard section (yellow highlight) and has a tighter radius where it connects with the endplate.

Mercedes W15 front wing endplate juncture comparison

Mercedes W15 front wing endplate juncture comparison

Photo by: Giorgio Piola

There’s a raft of changes where the flaps meet with the endplate, as the mainplane and second-element chord height have been adjusted, with the second element now the more dominant of the duo.

The second element is now joined to the endplate once more too, as the lower section of the endplate has been flattened out to complement it.

The two rearmost elements still utilise the semi-detached method that Mercedes first introduced at the beginning of last season, but they have been optimised to suit the changes made in their vicinity.

Furthermore, another winglet has sprouted out from the upper flap and sits in the gap between the endplate and adjuster to help produce the outwash effect that the team desires (red arrow).
 
The team only had one of these new front wings available and opted to give it to George Russell on this occasion, with Hamilton choosing to wait until Montreal to have his first taste of the new approach.

Early feedback from the wing appears to be encouraging, even though Monaco was probably not the best circuit to evaluate it.

But Shovlin thinks that, with smaller other updates also being added, the next races should give some proper indications of how much progress Mercedes has made curing the W15's Achilles heel.

“There is a reason teams do not normally bring update kits to Monaco, which is the very low-speed nature of the circuit," he said.

“The fact it is so busy, the short straights, it is very hard to actually evaluate anything. All the data we have seen though says that it was delivering performance, it was bringing a benefit in terms of how the car was feeling.

“George was happy with that, and he could feel that it was a step in the right direction. We are happy with what we have seen to date, but we will learn more in Montreal and then particularly when you get to a track like Barcelona with a wider corner speed range, you can really start to learn about it there.”

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