Red Bull RB16B

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godlameroso
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Re: Red Bull RB16B

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Morteza wrote:
25 Mar 2021, 12:40
https://pbs.twimg.com/media/ExUaSnPW8AA ... =4096x4096
Via @f1debrief
Interesting how the brake ducts exit before the brake rotors, whereas Mercedes has them ducted over the rotor. Does RBR want to heat the air in that area with the brake rotor? It could be that Mercedes heats the tube that passes over the rotor, and retains that heat in order to change the temperature of the air. Whereas RBR is venting the brake rotor heat directly mixed with the free stream air.

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lio007
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Re: Red Bull RB16B

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It's interesting, the only part in testing and also today in FP1 where they put some flow-viz on is on the rear-suspension:
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Sieper
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Re: Red Bull RB16B

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And on checo’s helmet :D

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godlameroso
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Re: Red Bull RB16B

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lio007 wrote:
26 Mar 2021, 16:56
It's interesting, the only part in testing and also today in FP1 where they put some flow-viz on is on the rear-suspension:
https://pbs.twimg.com/media/ExZ2zb6XMAE ... name=large
That part of the suspension sheds a vortex. You can see how it interacts with the endplate.
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aerofoilf1
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Re: Red Bull RB16B

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They ran the larger of these two outlets today

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aerofoilf1
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Re: Red Bull RB16B

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Further floor fence added this weekend

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hollus
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Re: Red Bull RB16B

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I just noticed the tiny winglet in the halo.
If this the first time this is done? Most teams have some nice aero fairings in the halo, but they are more neutral, for smoothing the airflow, for generally redirecting it, maybe drag avoidance. That winglet is more akin to the vortex generators in the floor and it is there instead or a more global fairing. I guess it sheds a vortex (does everything have to be there just to shed a vortex?).
Is it for flow attachment further back, maybe?

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Edit: apparently it was already there on the RB16.
https://www.motorsport.com/f1/news/tech ... s/5476733/
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Zynerji
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Re: Red Bull RB16B

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https://www.pitpass.com/69358/Horner-ad ... tion-issue

Would it have been possible that they put the RB16 in a full sized tunnel after the Abu Dhabi test to do this work?

That could have been a HUGE advantage for a carry-over chassis.

rgava
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Re: Red Bull RB16B

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Zynerji wrote:
01 Apr 2021, 02:12
https://www.pitpass.com/69358/Horner-ad ... tion-issue

Would it have been possible that they put the RB16 in a full sized tunnel after the Abu Dhabi test to do this work?

That could have been a HUGE advantage for a carry-over chassis.
Full size wind tunnel testing is forbidden by the rules.
And, if It were not, It takes time to correlate the results to the track. So, it will be useless.

Just_a_fan
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Re: Red Bull RB16B

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rgava wrote:
01 Apr 2021, 13:39
Zynerji wrote:
01 Apr 2021, 02:12
https://www.pitpass.com/69358/Horner-ad ... tion-issue

Would it have been possible that they put the RB16 in a full sized tunnel after the Abu Dhabi test to do this work?

That could have been a HUGE advantage for a carry-over chassis.
Full size wind tunnel testing is forbidden by the rules.
And, if It were not, It takes time to correlate the results to the track. So, it will be useless.
Is it against the rules to test an old car in a full size tunnel? That might be a key distinction.
If you are more fortunate than others, build a larger table not a taller fence.

cramr
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Re: Red Bull RB16B

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Just_a_fan wrote:
01 Apr 2021, 13:42
rgava wrote:
01 Apr 2021, 13:39
Zynerji wrote:
01 Apr 2021, 02:12
https://www.pitpass.com/69358/Horner-ad ... tion-issue

Would it have been possible that they put the RB16 in a full sized tunnel after the Abu Dhabi test to do this work?

That could have been a HUGE advantage for a carry-over chassis.
Full size wind tunnel testing is forbidden by the rules.
And, if It were not, It takes time to correlate the results to the track. So, it will be useless.
Is it against the rules to test an old car in a full size tunnel? That might be a key distinction.
I'm not sure about full size testing. But you can do CFD & Wind Tunnel 60% Scale testing of old and already tested configurations for free, as many as you want. I think it has to be 2-3 years old car

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godlameroso
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Re: Red Bull RB16B

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lio007 wrote:
26 Mar 2021, 16:56
It's interesting, the only part in testing and also today in FP1 where they put some flow-viz on is on the rear-suspension:
https://pbs.twimg.com/media/ExZ2zb6XMAE ... name=large
I think I understand how the slots worked last year. They were guiding air to the low pressure region of the tire, equalizing the pressure with the higher pressure region above the floor where the air was hitting it. By reducing the pressure differential of the high and low pressure regions of the tire, it reduced the turbulence being shed by the tire.

This year I see teams trying to create high pressure region along the edge of the floor, but won't this just feed the low pressure tire squirt? Because upstream the car is shedding vortecies that are smacking into the rear tires.

From our understanding of combustion engines, we understand that swirl and turbulence both aid mixing of air and fuel, however it's not just limited to mixing air and fuel, it's also true about mixing airflows, particularly airflows of different temperatures. Like the different temperatures found in the brakes and tires relative to ambient airflow.

There are two ways to reduce tire squirt, or turbulence shed from the tire, you either lower the high pressure zone, or raise the pressure in the low pressure zone. You can change the pressure by adding heat, however adding heat also adds kinematic viscosity to air, and thus causes more skin friction on any surface, which will affect how air flows upstream. As the airflow will always migrate towards the lowest pressure it can find.

Maybe lower rake cars create more powerful tire squirt, while higher rake cars with greater distance from the floor, and closer proximity to the high pressure zone of the rear tire create a lower pressure differential in that region.

It's a shame the regulations don't let you turn the floor downward near the rear tires. All the teams want to flick the air up, but why not down, wouldn't that increase the pressure in the low pressure region of the floor weakening the turbulence being shed by the tire? It would also match the rotation of the vortex being shed by the diffuser.
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Zynerji
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Re: Red Bull RB16B

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Wouldn't positive toe on the rear tyre force the tyre squirt away from the diffuser instead of into it? 🤔

I always ran positive rear toe during my rFactor days.

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raymondu999
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Re: Red Bull RB16B

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Zynerji wrote:
02 Apr 2021, 01:37
Wouldn't positive toe on the rear tyre force the tyre squirt away from the diffuser instead of into it? 🤔

I always ran positive rear toe during my rFactor days.
Sorry I’m not aware as to what “positive” toe is — would that mean toe in or out? With the other direction of course beign “negative”
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