McLaren MCL34

[SmallSoldier]

Nicolas carpentier

This is a picture that I would have never thought I would see... Wow!


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[M840TR]

New Front Wing

[tok-tokkie]

This picture:


I had not understood how the slits along the edge of the floor functioned. Looking at this picture it seems to me that they shave off some of the air that has been guided by the bargeboards to flow along the top of the floor and use it to create a wall of down & out flowing air all along the side of the floor. Thus sealing the under floor area so the diffuser creates a strong low pressure under the floor.
Is that what those slits along the side of the floor do?

[_cerber1]

New Front Wing

https://media-cdn.mclaren.com/media/ima ... ST9349.jpg

No, the same photo on page 44.

[M840TR]

New Front Wing

https://media-cdn.mclaren.com/media/ima ... ST9349.jpg

No, the same photo on page 44.

But it is a new front wing.

Our latest specification front wing arrived during the weekend, but needed some work so that we had two available for FP3. Late into the night our small team of fabricators was supplemented by anyone with a spare hand. Eight people worked on a nosebox – including the garage electrician and trackside aerodynamic performance engineer. It was worth it as both cars got the new spec. In an incredibly tight midfield, getting that job done was pivotal in getting both drivers into Q3

https://www.mclaren.com/formula1/2019/b ... bahraingp/

[_cerber1]

New Front Wing

https://media-cdn.mclaren.com/media/ima ... ST9349.jpg

No, the same photo on page 44.

But it is a new front wing.

Our latest specification front wing arrived during the weekend, but needed some work so that we had two available for FP3. Late into the night our small team of fabricators was supplemented by anyone with a spare hand. Eight people worked on a nosebox – including the garage electrician and trackside aerodynamic performance engineer. It was worth it as both cars got the new spec. In an incredibly tight midfield, getting that job done was pivotal in getting both drivers into Q3

https://www.mclaren.com/formula1/2019/b ... bahraingp/

I did not know this, thanks!

[diffuser]

Aero rakes to measure diffuser airflow

https://imgr1.auto-motor-und-sport.de/C ... 441342.jpg

https://imgr2.auto-motor-und-sport.de/C ... 441343.jpg

https://imgr1.auto-motor-und-sport.de/F ... 441404.jpg

https://imgr2.auto-motor-und-sport.de/F ... 441406.jpg

Seeing 14 on that McLaren bring warmth to the heart!

[godlameroso]

This picture:
https://pbs.twimg.com/media/D3JUqETX4AE ... name=large

I had not understood how the slits along the edge of the floor functioned. Looking at this picture it seems to me that they shave off some of the air that has been guided by the bargeboards to flow along the top of the floor and use it to create a wall of down & out flowing air all along the side of the floor. Thus sealing the under floor area so the diffuser creates a strong low pressure under the floor.
Is that what those slits along the side of the floor do?

You're looking at those aero surfaces as if they have direct airflow going parallel with the car at all times. The fact is a lot of those surfaces are meant to work when the car is turning. Aero in a straight line is bad, it costs drag, you want aero when the car is cornering. The middle of the car is working outwash not just because of the bargeboard geometry, but because flow will naturally outwash in corners. Downforce while the car is cornering is the best kind of downforce there is, the problem is as the car rolls and pitches, aero balance changes along with that.

There are obvious ways to change that through set up, some cars have more, or less pitch sensitivity, this by itself isn't a bad thing, it's bad if you can't make it work for you. By increasing the surface area of the bargeboard area, and the wheelbase itself, Mclaren has found more potential, but at the same time more pitch sensitivity. I feel this is what Red Bull is also struggling with.

So it becomes a delicate balance, because perhaps if you fix the aero pitch sensitivity to work for you, you end up with an overly stiff car which wrecks the tires. Finding the happy medium between the two is an iterative process. It does make it more difficult because the tires are new this year, and they behave differently, and being out of the window can cost you half a second per lap.

So staying on top of the tires and the aero platform becomes a balancing act.

[Jef Patat]

This picture:
https://pbs.twimg.com/media/D3JUqETX4AE ... name=large

I had not understood how the slits along the edge of the floor functioned. Looking at this picture it seems to me that they shave off some of the air that has been guided by the bargeboards to flow along the top of the floor and use it to create a wall of down & out flowing air all along the side of the floor. Thus sealing the under floor area so the diffuser creates a strong low pressure under the floor.
Is that what those slits along the side of the floor do?

You're on the right track. The exact aerodynamics are a bit more complicated but basically they try to create a side skirt as used in the early 80s.They used to create a vortex at the front of the edge of the floor. These are used as side skirt. Most probably that still is done but the current bargeboard area has become so complex it's difficult to judge how and how many they actually create. It's my understanding that the slots bleed some of the higher pressure air from the top to strengthen the vortexes.

That's the simple explanating for straight line aero. When the car is turning it becomes even more complex. Just have a look at the recent arcticle How the 2019 regulations have affected the aerodynamics of F1 cars for some nice CFD visuals under cornering. Remember downforce is most important under cornering, it needs to be stable to give the driver a predictable car.

Some history on side skirts:


http://www.formula1-dictionary.net/side_skirts.html
https://www.formula1.com/en/latest/arti ... MAWOU.html

[mwillems]

New Front Wing

https://media-cdn.mclaren.com/media/ima ... ST9349.jpg

No, the same photo on page 44.

But it is a new front wing.

Our latest specification front wing arrived during the weekend, but needed some work so that we had two available for FP3. Late into the night our small team of fabricators was supplemented by anyone with a spare hand. Eight people worked on a nosebox – including the garage electrician and trackside aerodynamic performance engineer. It was worth it as both cars got the new spec. In an incredibly tight midfield, getting that job done was pivotal in getting both drivers into Q3

https://www.mclaren.com/formula1/2019/b ... bahraingp/

I think the changes had been posted earlier in this thread, they are only minor I think. The metal separator between the outer and inner portion of the elements was changed, plus one other minor thing, I think it was the curvature of the upper elements had changed slightly on the inner portion of the wing.

[SmallSoldier]

New Front Wing

[/

Read the explanation afterwards... Disregard my question


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[SmallSoldier]

This picture:


I had not understood how the slits along the edge of the floor functioned. Looking at this picture it seems to me that they shave off some of the air that has been guided by the bargeboards to flow along the top of the floor and use it to create a wall of down & out flowing air all along the side of the floor. Thus sealing the under floor area so the diffuser creates a strong low pressure under the floor.
Is that what those slits along the side of the floor do?

You got it right! The slots at the edge of the floor create vortices that “seal” the floor and therefore increase the performance of the diffuser


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[Jef Patat]

That's incorrect, they do not create vortices, vortices are created further upstream. They must be created further upstream to have the right size as close to the front of the floor as possible to increase the efficiency of the idea. The slots energize the existing vortices at the exact edge where they are needed most as I've explained before.

[digitalrurouni]

They're the same, it's just the angle that the black of the rubber gives more contrast on the right one while on the left it blends in.

I don't think so. Count the squares from top to bottom 9 vs 11.

[f1rules]

i really is a nice looking car
highres
https://www.racefans.net/wp-content/upl ... 0420-1.jpg