shelly wrote:I think that the new slots in the rear are not for reducing drag, but to aid downforce of the rw.
They are placed below the wing profile - pressure is highr outside the endplates than inside in that zone
Rbr have had to fit the rw into the new legality box, so if the wing is aggressive the rear of it is steep, it needs slot bleeding from outside of rw not to stall. same as on the ouside of front wing endplate on most cars (for example f14t)
I think
Scarbs is probably right on this one.
2014 (top), 2013
To minimize the loss of downforce caused by the new wing regulations, I think Red Bull have chosen to increase pressure over the wing through the omission of the usual slots featured in end plate designs seen up and down the grid. Such a slot-less layout softens the impact of the new restrictions, because it essentially exchanges pressure for pressure.
Be it from a comparatively large wing with slots, like before, or from a smaller wing without slots, like now, it's all the same, yanno?
At least, I think so...
The downside would be drag caused by strong tip vortices shed from a system no longer equipped with a mechanism to bleed high pressure from the top of the wing. Left alone, the increased pressure differential compared to air flow on the underside of the wing would likely cause very strong vorticity at the wing tips, and the car would then be penalized by the high drag such a condition tends to create. The new slots appear to be a means to combat that problem, but in a reversal of the way end plate slots are normally used.
Here, they actually increase local pressure under the wing at a point just prior to vortex formation in order to minimize the pressure differential when that stream combines with its high-pressure counterpart from above. This subsequently weakens the vortices formed as a result of that interaction.
The slots will cost a bit of downforce relative to the entirely slot-free end plates the team used throughout winter testing, but not by much, and the drag reduction will make it worthwhile. In the end, I think the wing will still provide a net gain in downforce compared to more conventional designs.
Or not. I dunno.
This could very well explain why Red Bull uses a monkey seat to help drive the diffuser instead of the rear wing. If they feel their rear wing is good enough on its own, they get the flexibility to augment something else instead. That's just a guess, though.
Thoughts?
Also diggin' the new dihedral-like front wing. I wonder how much wider it gets when it flexes.