Mercedes GP MGP W01

[JohnsonsEvilTwin]

With the demise of the F-duct and development of the passive F-duct,
Mercedes will retain exactly the same set up IMO.

Passive F-duct is legal I believe. And it doesnt require a shark fin ether.

Merc may be running an active F-duct at present. Check the stewards technical report. Merc changed a rubber seal for the F-duct, on the FOOTREST of the car!

Thats strange...Footrest?
Where do I get the stewards tech report?

[thestig84]

http://www.fia.com/en-GB/mediacentre/f1 ... report.pdf

[aral]

http://www.fia.com/en-GB/mediacentre/f1 ... report.pdf

Correct. What do you make of that? There must be an intake below the nose, and maybe the duct is controlled by the foot?? But there again, the left foot is used for braking, meaning that as soon as braking is required, the duct is non-operative?

[marcush.]

I thoght they used the inlet on the cckpit side under the pushrod entry into the tub?

that could be very close to the footrest..

[JohnsonsEvilTwin]

http://www.fia.com/en-GB/mediacentre/f1 ... report.pdf

Correct. What do you make of that? There must be an intake below the nose, and maybe the duct is controlled by the foot?? But there again, the left foot is used for braking, meaning that as soon as braking is required, the duct is non-operative?

That would make sense, because as soon as braking is required you dont need a blown wing, in fact you would want more air over it.
I was thinking, if you have a rubber seal that opens at a force equivalent to (arguments sake)200kmh, allowing air to pass around and through the F-duct and then shutting again at under 200kmh, this would be considered passive no?

And passive F-ducts will be legal next year arent they?

[aral]

That would make sense, because as soon as braking is required you dont need a blown wing, in fact you would want more air over it.
I was thinking, if you have a rubber seal that opens at a force equivalent to (arguments sake)200kmh, allowing air to pass around and through the F-duct and then shutting again at under 200kmh, this would be considered passive no?

And passive F-ducts will be legal next year arent they?

I wouldnt be so sure. A flap designed to open under pressure, would be classed as a movable aerodynamic device. I understood from this forum, that it was being said that Merc were feeding their F-duct, from one of the openings below the airbox. Apart from that, the F-duct would need to be opened at a lower speed than the speed at which it would close again, so setting a vale to operate at a set speed would be of little benefit. However, it would be possible for pure aerodynamics to stall the wing, without any help and without adjustable flaps.

[JohnsonsEvilTwin]

Gilgen

This could come down to interpretation once again. The front wings on Red Bull and Ferrari for example, appear to have some flex at speed, but none under inspection conditions.
I dont know the ins and outs of it, but its plausible.

How exactly does a a passive F-duct work then?

[Mandrake]

btw. is there any detailed explanation yet on how the new rear wing actually works? It looks so abnormal and despite still not 100% understanding the "normal" F-Ducts I find myself inable to understand anything at all.

[aral]

Gilgen


How exactly does a a passive F-duct work then?

Trade secret, but I am open to offers!

[marcush.]

I wonder if mercedes is the team most vulnerable to adding updates to their car as they seem to be quite unsure about their proper setup .
By adding new parts into the equation they seem to struggle to find their ways to find the optium solution for Qualy.
timewise ,hockenheim must have been their worst qualy in distance to p1 .
their best qualy with Rosberg was in china when they where in their 4th race with a
not updated car..? maybe there is a pattern ...

[JohnsonsEvilTwin]

I wonder if mercedes is the team most vulnerable to adding updates to their car as they seem to be quite unsure about their proper setup .

Poor CoG and an inability to change this due to homolgation.

[marcush.]

I wonder if mercedes is the team most vulnerable to adding updates to their car as they seem to be quite unsure about their proper setup .

Poor CoG and an inability to change this due to homolgation.

I start to feel how Ross Brawn must suffer when he is spurring on his engineers and they come back to him ,with sorry Ross the weight split is wrong we will not make that thing fly this year.. and he answers :No ,don´t give up ...try more of this have you checked that..
Find a workaround IF thats the problem .Give me proof for your statement then we get over it and not work on it anymore.I would like to ,no question ... I sart to hate that thing..

[i70q7m7ghw]

Gilgen


How exactly does a a passive F-duct work then?

Trade secret, but I am open to offers!

All wings stall eventually, it just depends on the AOA and Airspeed. I'm not an aerodynamicist so I can't tell you exactly how it works. From what I under stand blowing the rear wing allows the teams to control the stalling a bit more. An active system allows the driver to stall the wing at will. A passive system appears to allow the team to control the stall at certain speeds. I would imagine they would fine tune this to stall somewhere above the top speed of the fastest corner of the track. Maybe not, it seems from use of the active f-duct this year stalling the rear wing in some corners is perfectly acceptable so perhaps the passive system comes in to affect in some high speed corners.

[PlatinumZealot]

There is no angle of attack change.

[dren]

I think he meant the AoA stays the same. He was just stating that the point at which the wing stalls is dependant on the AoA and air speed.