Red Bull RB13 TAG Heuer

[roon]

The zero-undercut, sloping sidepods harken back to the RB7.

[Nickel]

Any ideas as to how they would account for DRS or reduced downforce when they stall parts of the car?

A complex equivalent of ultra slow rebound damping is probably a useful analogy.

The downforce dropping off would have a delayed effect in terms of the suspension reacting is how I understand it.

[henry]

And as the speed increases after the DRS opening the downforce will increase again. Opening the DRS doesn't switch off the downforce generators it just resets them to a lower level.

EDIT: And a lower gain.

[henry]

The treatment of the Y250 vortex looks to be different from all the other teams.

The inner tips of the front wing flaps are "horizontal", that is they do non curve down towards the main plane. I suppose that this increases the downforce generated, the wing seems to have a large platform area, and it raises the Y250 vortex from just above the main plane and places it around the lower level of the bargeboards.

There I think the vortex is augmented by the bargeboard and guided round to the outside edge of the floor where it drops down through the notch in the edge of the floor, like a snake down a hole, and runs under the floor to seal it. I think they try to aim it at the edge of the diffuser using the high pressure in front of the wheels.

I think the way the sidepod connects to the floor implies that the conventional vortex running along the bottom of the sidepod isn't used.

Hopefully the wet running will give a glimpse of the vortexes and what's actually happening. But maybe Redbull won't run in the wet .

[Flying JPS Lotus]

RB13 on track for the wet testing today.

[Sevach]

https://twitter.com/ScarbsTech/status/8 ... 1918505984 https://twitter.com/ScarbsTech/status/8 ... 8966972416

[Morteza]

Via AMuS

[shady]

The treatment of the Y250 vortex looks to be different from all the other teams.

The inner tips of the front wing flaps are "horizontal", that is they do non curve down towards the main plane. I suppose that this increases the downforce generated, the wing seems to have a large platform area, and it raises the Y250 vortex from just above the main plane and places it around the lower level of the bargeboards.

There I think the vortex is augmented by the bargeboard and guided round to the outside edge of the floor where it drops down through the notch in the edge of the floor, like a snake down a hole, and runs under the floor to seal it. I think they try to aim it at the edge of the diffuser using the high pressure in front of the wheels.

I think the way the sidepod connects to the floor implies that the conventional vortex running along the bottom of the sidepod isn't used.

Hopefully the wet running will give a glimpse of the vortexes and what's actually happening. But maybe Redbull won't run in the wet .

I didnt want to say it yesterday as I had, and still have no proof. Im going to have to watch that cutout as the year progresses. We'll have to wait to find out but what if this car is running with a functioning aero skirt? The lower part of the bargeboards are like a halfpipe guide. The Y250 normally at least when Webber was around went around the outside of
the sidepod turning vanes anyway.. or at least appeared to:

[lio007]

Any thoughts on the flow-viz pics of the diffusor?

[bhall II]

"Sealing" the floor...

[henry]

"Sealing" the floor...

http://i.imgur.com/fiUYQnS.jpg

Not completely.

If you look at this picture closely


It is possible to discern two sets of flows under the floor line.

One goes diagonally from the notch area towards the edge of the diffuser the other mirrors the flow shown in your picture from the high pressure area in front of the rear tyre. They are discernably separate about level with the front of the suspension pull rod.

[bhall II]

The abundance of water in that photo to makes it difficult to sort out any details. While vortices can move mass, anything more than a fine mist is too much, because it's not possible separate the effects of air flow and momentum.

[Vanja #66]

Would you really want to seal the floor with a vortex or a skirt? It's one thing to seal a Venturi channels, another to seal the diffuser, but to seal the floor... Makes no sense to me. It is my understanding that a certain amount of air going into those diffuser vortices comes from outside the floor, or am I wrong?

[F1NAC]

Would you really want to seal the floor with a vortex or a skirt? It's one thing to seal a Venturi channels, another to seal the diffuser, but to seal the floor... Makes no sense to me. It is my understanding that a certain amount of air going into those diffuser vortices comes from outside the floor, or am I wrong?

http://www.formula1-dictionary.net/Imag ... erbody.gif

I dont know how would you channel air becase of front wheels wake to underside of floor. you are feeding floor from the front side.



It makes sense to "seal" sides of the floor from dirty air produced by tyres

[Vanja #66]

I dont know how would you channel air becase of front wheels wake to underside of floor. you are feeding floor from the front side.

http://oi58.tinypic.com/10nexhl.jpg

It makes sense to "seal" sides of the floor from dirty air produced by tyres

Venturi vortices in diffuser tend to pull a lot of air towards them. What you see bellow is on car with a very short wheelbase where front tyre wake is event more influential, and I would think that these vortices are a lot stronger in a 2017 F1 diffuser.
This is Cp +1 to -2, the usual span in F1 as well.



Though, with new tyres, rears especially, as wide as they are I'm second guessing myself now...