McLaren MP4-29 Mercedes

[jagunx51]

The inner rim surface

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

what is the white-dotted area ??

[Thunder]

what is the white-dotted area ??

It's basically a Heatsink like used for PC's... Just a lot flatter.

[aleks_ader]

http://i61.tinypic.com/2aeozo5.jpg

So this might be an explanation If thre is really an attached flow, visible.

I agree with your theory, but beacuse we are on tehnical forum. Your mushroom in that shape are illegal. It needs to be symmetrical or in other words "aero" neutral. That was discuset 1000 times in previouse sites.

Its better to draw right, than spread misconceptions around forum. I know the F1 tech rules are sometime pain in the ass, but that is...

Bv. really nice drawings. Cheers!

[mclaren_mircea]

Interesting article on Blogf1.com about the technical updates on the cars, at the last test in Bahrain. Even if Mclaren can't compete with Mercedes and even Ferrari regarding the quantity of the upgrades, there were some aerodynamic evolutions on mp4-29, not just the new front wing arrived on Sunday morning, and that couldn't be tested properly by the team. After they tried nolders and gills at the back of the car, Mclaren combined both of them, and retained both the gills and the nolders. You cand look at the picture by pressing on FOTO (with blue). The italians believe that there were sever alterations to the front wing, before the new FW arrived in the last morning.

Take a look: http://www.blogf1.it/2014/03/04/lanalis ... t-bahrain/

About Mclaren: "Qualcosa di interessante anche dalla McLaren, che ha apportato una modifica all’ala anteriore relativamente agli upper flap (FOTO). Quanto al posteriore, dopo aver collaudato soluzioni diverse per il cofano, il team inglese ha deciso di combinarle insieme, utilizzando un cofano dotato sia di nolder che di branchie (FOTO). Da segnalare che anche la McLaren utilizza qualche stratagemma all’interno dei cerchi; più precisamente, utilizza la famosa superficie zigrinata (FOTO)."

[frosty125]

Has anyone found any sources indicating what the upgrades for Bahrain that are now going to be introduced for Melbourne were supposed to be? As only the front wing made it and even that was never properly tested on the Sunday due to technical issues. The latter half of the final test seemed very unproductive for McLaren.



Could someone explain to me what the purpose is of the material within the wheel rim?

[Pilatus]

Could someone explain to me what the purpose is of the material within the wheel rim?

Here:
http://www.f1technical.net/development/433

[freshmeat]

So this might be an explanation If thre is really an attached flow, visible.

That's inaccurate. The bell wishbones have to be symmetrical.

[Per]

Even then, they can be tilted 5 degrees so the flow pattern may still be similar to what he depicted, which was the point of his drawing in the first place...

[Richard]

A quick reminder that the car threads are meant to focus on the actual features of the actual car.

Discussion of lap times & tyres belong in the respective race and test threads.

Team chatter about 2009 belong in the team thread http://www.f1technical.net/forum/viewto ... 15&t=17537

For the avoidance of doubt, these threads are for posts about things you can touch or see - ie "what is it?" or "how does it work?"

[aero_engineer]

I would find it very hard to believe that the flow on the backside of the a-arms is attached. It's just too sharp of a change in direction. The top one to me does not indicate attached flow. The bottom one doesn't seem to indicate anything specific, at least not to me. Certainly doesn't look like laminar attached flow, not to me at least. As for the diffuser, I think those just be splashes and not actually indictive of flow conditions. It doesn't look like they were trying to apply the paint there, since there isn't much down there. But I could be wrong. If it is actually indictive of the flow, then yes I would interpret that as poor sealing of the diffuser.

Good to know I am not alone. The bottom one does indicate attached flow, probably predictable since its very close to the diffuser. The upper part does not seem to show a distinct flow pattern, but I can say that the left side of the upper section seems to interact with the Tyre wake. Again like you said, it is too sharp a change of direction

[SidSidney]

http://imageshack.com/a/img41/9880/hp3u.jpg

With all the attention being focused on the design of those dragonfly air brakes, I wonder if the huge circular hot air exits to each side of the central exhaust tunnel are somehow significant to that solution?

I haven't spotted too many other teams e.g. Merc, RB, Ferrari needing those huge sidepod tunnels at that height or with that cross-section.

[SidSidney]

http://www7.pic-upload.de/01.02.14/7mz7mzi6tiw.jpg

Here's a good direct comparison of the leading car's sidepod profiles and the deviation from that shape by the McLaren sidepod tunnels at the rear (where they have those additonal, quite high circular sidepod exits beside the central exhaust exit).

Clearly from these shots they were capable of producing a very slim coke bottle that without those additional tunnels would have had a similar profile to the other cars in these shots, so those high tunnels must have a distinct purpose.

I don't think it is a coincidence those tunnels point directly at the rear suspension dragonfly air brakes. I was thinking about those glowing gases in another photo: turbocharger wastegate? Can they utilize the wastegate gases via these tunnels?

[Coefficient]

http://www7.pic-upload.de/01.02.14/7mz7mzi6tiw.jpg

Here's a good direct comparison of the leading car's sidepod profiles and the deviation from that shape by the McLaren sidepod tunnels at the rear (where they have those additonal, quite high circular sidepod exits beside the central exhaust exit).

Clearly from these shots they were capable of producing a very slim coke bottle that without those additional tunnels would have had a similar profile to the other cars in these shots, so those high tunnels must have a distinct purpose.

I don't think it is a coincidence those tunnels point directly at the rear suspension dragonfly air brakes. I was thinking about those glowing gases in another photo: turbocharger wastegate? Can they utilize the wastegate gases via these tunnels?

The waste gate will only open in emergencies and when it does it has to vent into the exhaust pipe as per the regulations so on the basis I suppose the answer is no.

[aero_engineer]

http://www7.pic-upload.de/01.02.14/7mz7mzi6tiw.jpg

Here's a good direct comparison of the leading car's sidepod profiles and the deviation from that shape by the McLaren sidepod tunnels at the rear (where they have those additonal, quite high circular sidepod exits beside the central exhaust exit).

Clearly from these shots they were capable of producing a very slim coke bottle that without those additional tunnels would have had a similar profile to the other cars in these shots, so those high tunnels must have a distinct purpose.

I don't think it is a coincidence those tunnels point directly at the rear suspension dragonfly air brakes. I was thinking about those glowing gases in another photo: turbocharger wastegate? Can they utilize the wastegate gases via these tunnels?

Correct me if I'm wrong. But I think the sole purpose of those tunnels is to direct the air towards the Monkey Seat and Rear Suspension, in doing so they've used them as a manner of opening up the cooling outlets - compromise between a coke bottle and the effectiveness of rear suspension; I guess their wind tunnel says the latter.

[Pup]

http://www7.pic-upload.de/01.02.14/7mz7mzi6tiw.jpg

Here's a good direct comparison of the leading car's sidepod profiles and the deviation from that shape by the McLaren sidepod tunnels at the rear (where they have those additonal, quite high circular sidepod exits beside the central exhaust exit).

Clearly from these shots they were capable of producing a very slim coke bottle that without those additional tunnels would have had a similar profile to the other cars in these shots, so those high tunnels must have a distinct purpose.

I don't think it is a coincidence those tunnels point directly at the rear suspension dragonfly air brakes. I was thinking about those glowing gases in another photo: turbocharger wastegate? Can they utilize the wastegate gases via these tunnels?

The other teams vent their engine compartments near the floor. McLaren can't do that because the airflow in that area is stagnant due to the air fence. So they have to vent higher.