Red Bull RB19

[marcel171281]

There are actually openings. I could well imagine that you slowly get into the area that you play with the pressure between the top and bottom of the floor and this is perfected. But I'm not an aerodynamicist. Maybe one of our specialists here can say something about this.

https://postimg.cc/23mCqzyH bild hochladen link

Openings in the sense that they can remove a panel that covers it yes, but otherwise that's just the way the light has reflected off the curved surface. There is no actual opening there, it's just a cover for the lower SIP.

There is an opening. This can be clearly seen in the enlarged image.

https://postimg.cc/BtHb2ZrX

If anything, this picture shows there is NO opening. Openings do not have carbon fiber weave.

[marcel171281]

Openings in the sense that they can remove a panel that covers it yes, but otherwise that's just the way the light has reflected off the curved surface. There is no actual opening there, it's just a cover for the lower SIP.

There is an opening. This can be clearly seen in the enlarged image.

https://postimg.cc/BtHb2ZrX

If anything, this picture shows there is NO opening. Openings do not have carbon fiber weave.

Here you go, some basic photo editing later:


a 'hole' made of CF.

[ing.]

Never realized there is a pocket in the floor
https://i.ibb.co/MRqnchZ/Screenshot-202 ... d60efb.jpg

I think its just a reflection and lighting playing tricks.

There are actually openings. I could well imagine that you slowly get into the area that you play with the pressure between the top and bottom of the floor and this is perfected. But I'm not an aerodynamicist. Maybe one of our specialists here can say something about this.

https://postimg.cc/23mCqzyH bild hochladen link

The simple answer to this is that the rules don’t allow any openings or “fully enclosed holes” in the floor, which is what you are suggesting.

[ing.]

Reflections. Other angle shows nothing.

Funny that it’s got 1k upvoted on Reddit and people all over talking about Newey genius and cost caps…

https://i.postimg.cc/0jcRwz95/Screen-Sh ... -23-PM.png

The level of detail in the floor edge is incredible!
The sidepod also looks to be even further undercut with the newly revised inlet.
There are also hints of clever in the shaping of the floor, it almost looks as though the diffuser is brought right up to the strake line (a definite upward bulge next the the FEW.

The lower edge of the sidepod cooling inlet was raised and so the undercut was indeed effectively augmented.

Considering that this car has the greatest amount of undercut and is leading the field by some margin, the fact they’ve increased the undercut even more should be seen as an indicator of the importance of this feature on performance.

[vorticism]

Louvers. They change the cover panel only to reveal more. Weight penalty from unused louvers but more adaptability and less cost when they only have to change a simple rectangular panel.


They are running asymmetrical louver areas apparently. Cropped from racefans.net:







Miami circuit is CCW with ~50% more RH bends, or might simply be due to the cooling load of the RH rads.

[vorticism]

Mark Sutton, motorsport.com:

[Andi76]

Openings in the sense that they can remove a panel that covers it yes, but otherwise that's just the way the light has reflected off the curved surface. There is no actual opening there, it's just a cover for the lower SIP.

There is an opening. This can be clearly seen in the enlarged image.

https://postimg.cc/BtHb2ZrX

If anything, this picture shows there is NO opening. Openings do not have carbon fiber weave.

Yes, this noticed already a day ago. And mentioned several times... Just as I have already mentioned that it was my mistake...maybe next time you should also read the following three or four posts. Then you'll save yourself the time and trouble of noting something that others have already noted and remarked on long before.

I think its just a reflection and lighting playing tricks.

There are actually openings. I could well imagine that you slowly get into the area that you play with the pressure between the top and bottom of the floor and this is perfected. But I'm not an aerodynamicist. Maybe one of our specialists here can say something about this.

https://postimg.cc/23mCqzyH bild hochladen link

The simple answer to this is that the rules don’t allow any openings or “fully enclosed holes” in the floor, which is what you are suggesting.

Good hint! I honestly have not thought of that at the moment at all!

[Farnborough]

That flow vis certainly gives modelling to the debate above, about the floor topography around the lower sis beam.

Looks like it's creating enough minus pressure to keep the flow pulled into strong contact with that surface, possibly pulling in from outside edge too to concentrate volume down along the half virtual pipe running the length of pod.

[Vanja #66]

If anyone's interested, here's my article about RB19 top speed performance. Nothing that wasn't already mentioned here (yet) but it is wrapped up nicely

https://www.linkedin.com/pulse/uncovere ... novi%C4%87

[FDD]

If anyone's interested, here's my article about RB19 top speed performance. Nothing that wasn't already mentioned here (yet) but it is wrapped up nicely

https://www.linkedin.com/pulse/uncovere ... novi%C4%87

https://media.licdn.com/dms/image/D4D12 ... Q8cVzvcpXw

Excellent article, especially if I take into account the "language" used to be understandable for non aero experts like my self.
Great work, thank you

[Vanja #66]

Excellent article, especially if I take into account the "language" used to be understandable for non aero experts like my self.
Great work, thank you

Thank you, I always try to keep things as simple as possible to the best of my knowledge, but without trivialising

[peewon]

If anyone's interested, here's my article about RB19 top speed performance. Nothing that wasn't already mentioned here (yet) but it is wrapped up nicely

https://www.linkedin.com/pulse/uncovere ... novi%C4%87

https://media.licdn.com/dms/image/D4D12 ... Q8cVzvcpXw

Interesting stuff as always Vanja. Why do you think RB has stayed away from the scooped sidepod concept that other teams have opted for to varying degrees? Theoretically, its to outwash the front tire wake but RB 19, the most efficient car on the grid has not gone in that direction.

[Just_a_fan]

Mark Sutton, motorsport.com:

https://cdn-8.motorsport.com/images/mgl ... ing-1.webp

https://cdn-4.motorsport.com/images/mgl ... ing-1.webp

The flow around the sidepod is brilliant - how some of it flows to the floor edge device, some back to the mousehole and some over the diffuser.

[Vanja #66]

Interesting stuff as always Vanja. Why do you think RB has stayed away from the scooped sidepod concept that other teams have opted for to varying degrees? Theoretically, its to outwash the front tire wake but RB 19, the most efficient car on the grid has not gone in that direction.

I'm working on finding that out. I think RB is generating outwash in a different manner, for less drag, and using long wide sides to keep the flow away.

Nice article Vanja, just want to point out in Miami RB's straight lines were better even non drs-ed. We have a good comparison available on second to last lap for max and last lap for hamilton

Ferrari was quite close overall, performance on each straight varied during the race, often equal to RB. Aston only slightly behind, less than that lap of Hamilton. On other races, same thing. It was a general statement.

[vorticism]

Interesting stuff as always Vanja. Why do you think RB has stayed away from the scooped sidepod concept that other teams have opted for to varying degrees? Theoretically, its to outwash the front tire wake but RB 19, the most efficient car on the grid has not gone in that direction.

I'm working on finding that out. I think RB is generating outwash in a different manner, for less drag, and using long wide sides to keep the flow away.

In the prev formula maximizing mass flow was crucial to the diffuser/BW area due to its location aft of the rear axle and the use of a raked flat floor. With this formula the diffuser is optimized in shape so it's not mass flow limited (for lack of a better term) therefor they can optimize for topside form drag rather than inwashing/cokebottling. The important flow is happening UNDER the diffuser now rather than above it. Ferrari & Mercedes missed the boat on this by continuing 2009-21 era features. My 2 pence. Competitors also kept using pullrod rear suspension in error; pullrod was more important during the high rake era because of CoG concerns (they wanted the suspension internals 300mm above the ground instead of 600mm); they also impinge upon tunnel space.

Nice article Vanja, just want to point out in Miami RB's straight lines were better even non drs-ed. We have a good comparison available on second to last lap for max and last lap for hamilton, where they both went for fastest laps and had no one in front. Both used a higher than normal engine mode, with hamilton using highest one they have (strat 2) as he did it on final lap. Here are results:

Slightly faster in the low speed corners as well.