Mercedes AMG F1 W04

[beelsebob]

There is a difference between being informed and making it hard for readers to understand. If you seriously explain it well people wouldnt fully understand it, and that is a problem. And yes, people like being informed. But what is the point of reading about vortex formation and how it works the exhaust(which the 2 small fins in the picture aid) when you dont know what a vortex is?

The point is that there's a difference between making it simple and making it incorrect.

Simple: The exhaust is directed to the edge of the diffuser.
Incorrect: The exhaust is directed to the brake ducts.

Note – he explicitly states that "The twisted horizontal vane is to stop the exhaust gas twirling underneath the floor. This picks it up and turns it away from where the floor is trying to suck it.

No… As we've established, they explicitly want the gases to go beneath the floor, because that's where they can enlarge the diffuser.

[henra]

Imo its easier to understand the sealing of the diffuser then the exhaust aimed at the brake ducts.

The more tricky thing is to explain how these vanes do support that.
And that is where some fundamental knowledge is required (what is a vortex and why can it seal something?) to get even a rough picture of why they mount these vanes at that location and direction.
I wouldn't assume GA hasn't understood Coanda since two years. I guess he still has enough connections to the scene that someone would be so kind to explain to him the rough principle behind.
The problem is probably indeed he had no idea how to explain the vanes (not Coanda) to Joe Public.
I wouldn't want to have to explain it to my neighbour neither....

[henra]

No… As we've established, they explicitly want the gases to go beneath the floor, because that's where they can enlarge the diffuser.

I'm not sure everyone would agree that the gases should go beneath the floor.

The vanes will generate a vortex in the opposing direction (counter- rotating) to the diffuser footplate vortex. Thereby you will maximise the energy of the footplate vortex and prevent it from being sucked under the diffuser if you create a strong opposing vortex directly above the footplate vortex. Both vortices should be longitudinally accelerated (and thereby energised) by the exhaust flow.
This would energise and stabilise the footplate vortex (being located directly at the sides below the diffuser's edge) and make it seal the diffuser by creating a low static pressure in the entire area.
How do you explain that to your Mother?

[Huntresa]

No… As we've established, they explicitly want the gases to go beneath the floor, because that's where they can enlarge the diffuser.

I'm not sure everyone would agree that the gases should go beneath the floor.

The vanes will generate a vortex in the opposing direction (counter- rotating) to the diffuser footplate vortex. Thereby you will maximise the energy of the footplate vortex and prevent it from being sucked under the diffuser if you create a strong opposing vortex directly above the footplate vortex. Both vortices should be longitudinally accelerated (and thereby energised) by the exhaust flow.
This would energise and stabilise the footplate vortex (being located directly at the sides below the diffuser's edge) and make it seal the diffuser by creating a low static pressure in the entire area.
How do you explain that to your Mother?

You show pics and draw pics.

[Shakeman]

No… As we've established, they explicitly want the gases to go beneath the floor, because that's where they can enlarge the diffuser.

I'm not sure everyone would agree that the gases should go beneath the floor.

The vanes will generate a vortex in the opposing direction (counter- rotating) to the diffuser footplate vortex. Thereby you will maximise the energy of the footplate vortex and prevent it from being sucked under the diffuser if you create a strong opposing vortex directly above the footplate vortex. Both vortices should be longitudinally accelerated (and thereby energised) by the exhaust flow.
This would energise and stabilise the footplate vortex (being located directly at the sides below the diffuser's edge) and make it seal the diffuser by creating a low static pressure in the entire area.
How do you explain that to your Mother?

I was following this thread and came to the same conclusion as you. The fault of the article was to use a rather broad brush stroke when a bit more deal was appropriate but I understood what he was saying.

GA's article may have been sub-edited for brevity or more likely to fit a much more enthusiast level of readership too so it may not be GA's fault.

I have to say GA speaks a lot of sense in as much detail as he can possibly do without raw data and has been an excellent addition to F1 coverage. He has had the temerity to work in the sport after all.

[MercedesAMG]

http://www.auto-motor-und-sport.de/form ... 90126.html

[Taqtix27]

hey, im new here this is my first post. First I was wondering what articles are best to read if your new to the technical side of f1? also I was wondering what the black thing coming out of the left side mirror is in this picture.

[flynfrog]

id guess a radio antenna

[Taqtix27]

ahh thanks... also what is the best site for high res f1 pictures?

[mantikos]

id guess a radio antenna

It is

[The_Truth]

http://www.auto-motor-und-sport.de/form ... 90126.html

Can anyone here translate it please?

[Ozan]

RB9 with updated rear wing & strakes.

I wonder why Merc don't update the rear wing and strakes like redbull and some other teams did.

[beelsebob]

I wonder why Merc don't update the rear wing and strakes like redbull and some other teams did.

The same reason as for all these questions, there's two possible answers
1) They haven't yet investigated it, because they feel they can make larger gains in other areas.
2) They've investigated it and feel that that design doesn't work well on their car.

[Cam]

No… As we've established, they explicitly want the gases to go beneath the floor, because that's where they can enlarge the diffuser.

I'm not sure everyone would agree that the gases should go beneath the floor.

The vanes will generate a vortex in the opposing direction (counter- rotating) to the diffuser footplate vortex. Thereby you will maximise the energy of the footplate vortex and prevent it from being sucked under the diffuser if you create a strong opposing vortex directly above the footplate vortex. Both vortices should be longitudinally accelerated (and thereby energised) by the exhaust flow.
This would energise and stabilise the footplate vortex (being located directly at the sides below the diffuser's edge) and make it seal the diffuser by creating a low static pressure in the entire area.
How do you explain that to your Mother?

Not that I disagree, but simply trying to better understand why that method:

When a diffuser is used, the air flows into the underbody from the front and sides of the car, accelerates and reduces pressure. There is a suction peak at the transition of the flat bottom and diffuser. The diffuser then eases this high velocity air back to normal velocity and also helps fill in the area behind the car making the whole underbody a more efficient downforce producing device by reducing drag on the car and increasing downforce. The diffuser also imparts upward momentum to the air which further increases downforce.

It would seem easier to achieve a better, more stable effect by getting more underneath the car from the sides, rather than trying to add in a new way of sealing what is already there, wouldn't it?

[BorisTheBlade]

http://www.auto-motor-und-sport.de/form ... 90126.html

Can anyone here translate it please?

Firstly they are discussing the Pirelli test with the outcome that it didn't help Mercedes the for Monac. They also question that it did help them understand their problems better at all. It might have helped them to improve some common procedures. Then they talk about the new gearbox casing and that it allows for more setup flexibility.
They also mention that the casing and new rw brake openings lead to a decrease of the rw temperatures by around 10 degrees.

I hope I didn't miss anything.