Red Bull RB9 Renault

A place to discuss the characteristics of the cars in Formula One, both current as well as historical. Laptimes, driver worshipping and team chatter do not belong here.
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ringo
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Joined: 29 Mar 2009, 10:57

Re: Red Bull RB9 Renault

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Marko is saying that the car produces too much downforce for the tyres and they have to turn it down to make the tyres usable.
That's really saying something.
For Sure!!

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Joie de vivre
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Re: Red Bull RB9 Renault

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could be true considering AoA of that rear wing they are running

Neno
Neno
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Re: Red Bull RB9 Renault

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ringo wrote:Marko is saying that the car produces too much downforce for the tyres and they have to turn it down to make the tyres usable.
That's really saying something.
if they produce such aerodynamic efficenty, they could use it for better top speed instead too much heating tires in corners. but that is not case in RB9, because in Mercedes they could say that last 4 years car produce too much downforce for the tyers :roll: Marko is uneducated man, who dose not know nothing about f1, specialy about car downforce, and how much other have downforce. His statement is base on his pure ego and his marketing about have good Red Bull is and how good car they have and how much Pirelli suck for his car.

They can blame only Newey for this, he designed that car. Newey didnt make enough effort to make car with his geometry work good with tires he is special kind of freak. Something like addict, but he is not opssesed with heroin, instead of downforce and formula 1 is much more then only that.

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Cam
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Re: Red Bull RB9 Renault

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Neno wrote:They can blame only Newey for this, he designed that car. Newey didnt make enough effort to make car with his geometry work good with tires he is special kind of freak. Something like addict, but he is not opssesed with heroin, instead of downforce and formula 1 is much more then only that.
Wow, you can build a100 bridges, but you f*&^ one goat.......

To be fair - all teams complained of essentially rubbish data from winter testing - 5hit in, 5hit out. If they had great data and still can't perform, then fair enough, let the criticism fly, but this is not what's happened here.
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henra
henra
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Joined: 11 Mar 2012, 19:34

Re: Red Bull RB9 Renault

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Neno wrote:if they produce such aerodynamic efficenty, they could use it for better top speed instead too much heating tires in corners. but that is not case in RB9, because in Mercedes they could say that last 4 years car produce too much downforce for the tyers :roll:
Given the fact that Merc always used to be quite good in the Top Speed department yet lap times and apex speeds usually were wuite off compared to RB I have no idea how you come to this conclusion?!
They can blame only Newey for this, he designed that car. Newey didnt make enough effort to make car with his geometry work good with tires he is special kind of freak. Something like addict, but he is not opssesed with heroin, instead of downforce and formula 1 is much more then only that.
So you know it is the geometry causing the overload of the tires?! Not setup, i.e. camber, anhedral/dihedral, tire pressure, etc. Not downforce either.
Would you mind sharing the data that led you to this conclusion after thorough analysis?
After all Newey and RB might learn something new as well.

flyboy2160
flyboy2160
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Joined: 25 Apr 2011, 17:05

Re: Red Bull RB9 Renault

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shelly wrote:...
On the rb9 the rear wing endplate extensions seem much more twisted than on the other cars. The axis of the vortex they interact with should pass along the center of them , since the twist is given to them to have a corrcect angle f attck with respect to the vortex induced perturbation of the local velocity angle.

From the orientation of the twist you can infer the sens of rotation of the vortex. To me, for the right side of the car seen froma the back, it seems that the vortex rotates counterclockwise - that seems strange because the lower endplate vortex is clockwise there
Shelley, I agree that when viewed from behind, the lower right hand endplate vortex ought to be clockwise (to fill in the lower pressure on the bottom of the beam wing.) And, yes, those twisted feathers look like they might be going the wrong way for a clockwise vortex.

Could they be some drag reduction scheme for 'fighting' or 'opposing' the vortex?

If I have time in the next week or 2, I'll make a CAD model of just the endplate and beam wing and run it with a viscous solver. You got me curious about this.....

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Gridlock
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Re: Red Bull RB9 Renault

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Image
#58

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lio007
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Joined: 28 Jan 2013, 23:03
Location: Austria

Re: Red Bull RB9 Renault

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Rikhart wrote:Unbelievable vibration of that front wing (again), just saw it on FP1 around the 7 mins left mark on vettels car. It looked like it was going to fly off. Also its very clearly depressing on the straights and coming back up on braking, so it seems it doesnt really matter what sort of improvements they do to the flexing tests.
just found this youtube-video (maybe wrong in this thread, but good for comparison):
[youtube]http://www.youtube.com/watch?v=pdpYbHFhkMo[/youtube]

if you look at 00:50-01:00 or 01:08-01:11...is this a real flexi-FW on the Ferrari?
The FW moves down and raises on breaking...or am I wrong?

Crucial_Xtreme
Crucial_Xtreme
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Joined: 16 Oct 2011, 00:13
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Re: Red Bull RB9 Renault

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shelly wrote:
On the rb9 the rear wing endplate extensions seem much more twisted than on the other cars. The axis of the vortex they interact with should pass along the center of them , since the twist is given to them to have a corrcect angle f attck with respect to the vortex induced perturbation of the local velocity angle.

From the orientation of the twist you can infer the sens of rotation of the vortex. To me, for the right side of the car seen froma the back, it seems that the vortex rotates counterclockwise - that seems strange because the lower endplate vortex is clockwise there
Here's a good look at the flow pattern of the RWEP and also the effect the rear tyre has on the air.

Image
image via RCE

shelly
shelly
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Joined: 05 May 2009, 12:18

Re: Red Bull RB9 Renault

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It is interesting to notice that one half of the lower endplate louvers is not covered in paint
twitter: @armchair_aero

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flynfrog
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Re: Red Bull RB9 Renault

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it looks like the paint was applied pretty far on the leading edge, the bottom lovers are probably not fed from that point

nacho
nacho
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Joined: 04 Sep 2009, 08:38

Re: Red Bull RB9 Renault

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Tire deformation on RB9

[youtube]http://www.youtube.com/watch?v=V9ZUoEVIjFI[/youtube]

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raymondu999
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Joined: 04 Feb 2010, 07:31

Re: Red Bull RB9 Renault

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Taking a look at the 2013 Malaysian Grand Prix, Vettel did IOPPO for his strategy. New mediums saw him through for 17 laps (start of lap 6 - end of lap 22)

Considering that the Malaysian GP is 56 laps, have we misread the RB9? It doesn't look like it's a car in much trouble. Only Bottas (Lap 23 - Lap 40, 18 laps) and Maldonado (Lap 14 - 32, 19 laps) did longer stints on the option tyre than Vettel - and crucially, both were later in the race, where the fuel was lighter. Both Lotuses had their longest option stint pegged at 15 laps - and even the somewhat competitively 3-stopping Button was doing 14 lap stints on his options.

Say the whole race had been dry, and they started the race on options - of which Vettel had 2 new sets. Adjust the stint length slightly, thanks to having more fuel on board, and he could probably stretch to maybe 15 or 16. But let's go conservative and say 15 - leaving 41 laps to do. I could definitely see Vettel (having done 17 laps on the option) do a stint of 20 and 21 laps respectively on the prime. Or if the option was that much better - he could have done three 15-lap stints on the options and still only had 11 laps on the prime.

Have we misread this as a tyre-eater?

It's looking increasingly like the car in Melbourne race trim was out of the window, rather than fundamentally being a tyre-eater.
失败者找理由,成功者找方法

ForMuLaOne
ForMuLaOne
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Joined: 19 Feb 2011, 02:01

Re: Red Bull RB9 Renault

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raymondu999 wrote:
Have we misread this as a tyre-eater?

It's looking increasingly like the car in Melbourne race trim was out of the window, rather than fundamentally being a tyre-eater.
The tyres cover the biggest amount of laptime. So they were better on the tyre, but slower than in melborune. Just compare Mercedes performance between those races. So maybe Red Bull has the fastest car, but they have to sacrifice more laptime in order to preserve tires than maybe a ferrari or mercedes. This also is in line with the statement that they have "too much downforce".

CHT
CHT
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Joined: 14 Apr 2008, 05:24

Re: Red Bull RB9 Renault

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raymondu999 wrote:Taking a look at the 2013 Malaysian Grand Prix, Vettel did IOPPO for his strategy. New mediums saw him through for 17 laps (start of lap 6 - end of lap 22)

Considering that the Malaysian GP is 56 laps, have we misread the RB9? It doesn't look like it's a car in much trouble. Only Bottas (Lap 23 - Lap 40, 18 laps) and Maldonado (Lap 14 - 32, 19 laps) did longer stints on the option tyre than Vettel - and crucially, both were later in the race, where the fuel was lighter. Both Lotuses had their longest option stint pegged at 15 laps - and even the somewhat competitively 3-stopping Button was doing 14 lap stints on his options.

Say the whole race had been dry, and they started the race on options - of which Vettel had 2 new sets. Adjust the stint length slightly, thanks to having more fuel on board, and he could probably stretch to maybe 15 or 16. But let's go conservative and say 15 - leaving 41 laps to do. I could definitely see Vettel (having done 17 laps on the option) do a stint of 20 and 21 laps respectively on the prime. Or if the option was that much better - he could have done three 15-lap stints on the options and still only had 11 laps on the prime.

Have we misread this as a tyre-eater?

It's looking increasingly like the car in Melbourne race trim was out of the window, rather than fundamentally being a tyre-eater.
great analysis.

I believe as long as Vettel can continue to gamble on using 1 set of option tires for Q1 and Q2, he will have an tire advantage over the other drivers. ie. if track temperature is not too cold.

reckon cold temperature could be RBR biggest enemy this season