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07-05-2012, 12:26 PM #1
Agera R : Dynamic wing in action
From the Koenigsegg website :
Dynamic rear wing
Hypercars of today generate massive amounts of downforce at low to medium speed and less down force at very high speed. This is so as to avoid overloading the tires and creating too much drag.
The wing changes its angle of attack, not with the help of hydraulics, but with the pressure of the wind. It is therefore dynamically controlled by the vehicle speed, or wind resistance, at any given moment in time and thus actually compensates for headwind or tailwind at the same given speed. This is an intelligent way of dealing with adaptive aerodynamics as the system becomes lighter, less complex and more intuitive compared to heavy and complex hydraulics systems. Koenigsegg had to work heavily with CFD in order to create the dynamically controlled adaptive aerodynamics of the Agera R.
An interesting additional feature of the adaptive wing is that the pylons for the wing also act as air extrusion channels. The air channels go from the engine bay to the back of the pylons, thereby creating an air passage. This causes a venturi effect from the air rushing past the pylon, evacuating hot engine bay gases, reducing pressure in the engine bay and increasing the flow of cooling air through the side radiators. This also means that the pressure under the car is reduced, giving more low drag down force.
I don't know the exact speed when the wing changes its position, but you should drive fast
07-05-2012, 01:07 PM #2
very cool. I was not aware of this. That is some impressive engineering.-
"There's a lot of people who want to play the game, but you can't cry when the game plays you."
07-06-2012, 04:24 AM #3
Very crazy, this is the first time I have really paid close attention to the wing on the Agera. Thanks for the post.
07-06-2012, 06:37 AM #4
07-06-2012, 02:37 PM #5
Humm, that video was interesting. It didn't level out until very high speed, but then also didn't retract until very slow. Probably 50mph lower then the speed it levels at. As a driver things like this would be a little unnerving. Flying into a corner and just hoping the wing flips back down in time.
Looks to me like they have a bit more to work on with the dampening, wing travel, and aerodynamics of the wing, as once leveled, the wind holds it in place for much longer and it takes to much (little) for to pull it through the airstream back down to the angled position
07-06-2012, 04:14 PM #6
I'm not bullish on their implementation yet. Forcing the AOA change via the airflow creates more drag since it is fighting the dampening/mounting system in order to pivot.There are only four sports: bullfighting, motor racing, mountaineering, and troll hunting; all the rest are merely games.
07-06-2012, 10:08 PM #7
07-07-2012, 06:17 AM #8
I thought the wing was fixed.'01 IS300
07-08-2012, 04:22 AM #9
07-08-2012, 04:34 AM #10
This is the same sort of technology that the 458 uses with its front grill fascia right?