McLaren MCL33

[M840TR]

That leading edge of the floor is so bare

[McMika98]

To reduce but not eliminate drag, no drag no lift, did you skip high school physics? Also the diffuser and body itself produces downforce on an F1 car, like the kind poster above you mentioned the car works as a whole.

Furthermore every moving object that displaces fluid results in vortecies, whether it results in turbulence or entrained vortecies is another matter.

Obviously drag is a consequence of flow but primarily due to surface friction, the wing tip vortices that you refer are non consequental in comparison.
Again plz, ever heard of laminar flow, how do u get vortices and turbulence from a moving object without flow separation. Most appendages on the sides of f1 car do not create vortices else it will be heck of analysis to understand the flow around the car.

[diffuser]

That leading edge of the floor is so bare

https://pbs.twimg.com/media/Dg7gZtJW4AEZw5B.jpg:large

It's the same for RBR, it's just harder to see. The floor is raised in the section closer to the T-tray, stays horizontal and the outer edge is slanted down to the level of the actual floor. The T-tray is channeling air to the raised section of the floor. The bardgeboards are doing a few things.

1 - They're blocking air flowing front to back from disrupting the t-tray air.
2 - They're corralling the T-Tray air flow from escaping from the side and channeling it under the floor.
3 - You can see from the flowvis, the flow of the air in front of the bardgeboard is outward but also downward.
4 - The chicken wing and it's arm preceding it are grabbing the air a guiding it under the floor.

You can see in this picture RBR had 2 bigger chicken wings ...



and in the latest reencarnation, they have 3 HUGE fingers now.

[godlameroso]

That leading edge of the floor is so bare

https://pbs.twimg.com/media/Dg7gZtJW4AEZw5B.jpg:large

The new nose doesn't work with the device that worked with the old nose, so they can't guide airflow 45 degrees behind the bargeboard inlet, that and the flow stagnation at the edge of the bargeboard means they can't get the amount of downforce they want. The balance is good, they just don't have downforce, they're missing pieces in critical areas. It goes to show how interconnected the total aero of the car is, if two small counter intuitive regions are responsible for so much downforce.

I saw something similar when I was doing studies for various blowers, the different ducts vortex generators and control surfaces had weird effects when you put them in specific places, sometimes beneficial sometimes bad, sometimes a control surface you thought would work, made things worse some where down the line, sometimes a control surface that wasn't even related to another area of air-flow was having a huge influence on an inlet or manifold. In a way it was like whack-a-mole, or aero chess, it took the better part of 5 months to get that sorted. I can't give the game away, but as counter intuitive as it is, wing shapes worked best for flow conditioning precisely because of the large vortecies, granted these blowers were operating at slightly higher air speed than these cars work at so maybe it doesn't apply 1:1.

[M840TR]

That leading edge of the floor is so bare

https://pbs.twimg.com/media/Dg7gZtJW4AEZw5B.jpg:large

It's the same for RBR, it's just harder to see. The floor is raised in the section closer to the T-tray, stays horizontal and the outer edge is slanted down to the level of the actual floor. The T-tray is channeling air to the raised section of the floor. The bardgeboards are doing a few things.

1 - They're blocking air flowing front to back from disrupting the t-tray air.
2 - They're corralling the T-Tray air flow from escaping from the side and channeling it under the floor.
3 - You can see from the flowvis, the flow of the air in front of the bardgeboard is outward but also downward.
4 - The chicken wing and it's arm preceding it are grabbing the air a guiding it under the floor.

You can see in this picture RBR had 2 bigger chicken wings ...

https://i.redd.it/5ffl5k26ibn01.jpg

and in the latest reencarnation, they have 3 HUGE fingers now.
https://www.racefans.net/wp-content/upl ... 812-43.jpg

What are these chicken wings you're referring to?
BTW I also meant to point out how there aren't any vortex generators underneath the leading edge like Redbull etc.

[diffuser]

godlameroso started referring to it as that.

[M840TR]

godlameroso started referring to it as that.
https://image.ibb.co/kdbCsJ/Dg7g_Zt_JW4_AEZw5_B.jpg

Is that not the mid-wing? And you mean to say that since that is guiding air under the floor Mclaren feel there's no need of the vortex generators on the floor leading edge?

[diffuser]

godlameroso started referring to it as that.
https://image.ibb.co/kdbCsJ/Dg7g_Zt_JW4_AEZw5_B.jpg

Is that not the mid-wing? And you mean to say that since that is guiding air under the floor Mclaren feel there's no need of the vortex generators on the floor leading edge?

No, I have no idea about that.

[Zynerji]

I thought barge board/ floor interaction was all about vortex stretching?

[diffuser]

I thought barge board/ floor interaction was all about vortex stretching?

Maybe...can't they be doing 2 things?

[godlameroso]

I thought barge board/ floor interaction was all about vortex stretching?

Maybe...can't they be doing 2 things?

The front wing does 5 different things, why not this part of the car? It can certainly be made complex enough.

[godlameroso]

godlameroso started referring to it as that.
https://image.ibb.co/kdbCsJ/Dg7g_Zt_JW4_AEZw5_B.jpg

Is that not the mid-wing? And you mean to say that since that is guiding air under the floor Mclaren feel there's no need of the vortex generators on the floor leading edge?

I just think they never got around to that, Prodromu is very methodical I doubt he'd just toss on parts at the floor leading edge without getting all the upstream airflow settled.

[jamesalexw]

I know there is a lot of discussion here that the unique rear suspension design is the cause of Mclaren's woes in low speed corners and traction zones.

However, with the swap to the Renault power unit I read that due to it having the compressor and MGU at the back of the engine it protruded into the gearbox area and required Mclaren to redesign it. They had a very late switch so would have had little time to properly accommodate such a large difference. Is it not much more likely that the redesign of the gearbox had a large knock on effect on the rear suspension geometry?

Sometimes I feel we are too quick to blame the differences we can see visually.

[mclaren111]

Mercedes:



McLaren:





Big differance. Is McLaren's too "simple" ??

[Dipesh1995]

Alonso running with a front wing with pre-Mexico 2017 second and third elements i.e without the inboard slots around Y250 region.

[media]https://mobile.twitter.com/McLarenF1/st ... 16/photo/1[/media]

Looks like they’ve run out of latest spec front wings.