So does that suggest that something like DavidV's wing is useless? If the wing is high enough and not directly above the trunk, the air would reconnect without being affected by the ground.www.up22.com said:Wings, by their design require that there be no obstruction between the bottom of the wing and the road surface, for them to be most effective. So mounting a wing above a trunk lid limits the effectiveness.
The angled trailing edge on my MR2's wing is actually slightly behind the trunk. If you look closely, you'll see that the wing is positioned above the roofline, in the line of clear air, and slightly behind the trunk.mr2pmp said:Nice find. Can't get much more simple than that.
So does that suggest that something like DavidV's wing is useless? If the wing is high enough and not directly above the trunk, the air would reconnect without being affected by the ground.
What I'm getting out of this is that the rear end on the Noble isn't efficient?Wings are not generally seen in concert with spoilers, as they both occupy similar locations, and defeat each other's purpose.
Using a wing and a spoiler (think nascar style high angle of attack spoiler) would be inneficient. although the extension of the rear under the wing on the lotus is in fact a spoiler it is probably not what the author is referrring to. his statement was too general. this type of spoiler is really just an extsnion of the rear body panel that extends the point at which the air "drops off" and causes wake infill. the air wants to turn downward and then circle back toward the rear of the car. if this spoiler was not there then the air would be doing this directly beneath the rear wing. the air flow beneath the wing is the most important aspect of the wing. this spoiler is there to increase the efficiency of the wing by ensuring that turbulence is not introduced into the under side airflow of the wing.DR PH1L said:The cars in question are the Lotus Exige and the Noble M400. If you don't know what either of those look like, Google Image Search them. I've supplied a picture of a Lotus Exige. What I'm wondering about is the lip spoiler they have, and then they have a wing on top of that. In this text from the first link that Bill gave us, it says:
What I'm getting out of this is that the rear end on the Noble isn't efficient?
Please help me understand this better cause I think Noble and Lotus would be the type of manufacturer to go into the wind tunnel and actually produce something VERY efficient.
Correct me if I'm wrong but, to my understanding, the vertical panels prevent lateral air movement over the wing during very high slip angles (WRC). This insures the most consistant performance from the wing.I'd like to point out the surface area and location of the end plates might be important. The end plates on those high mounted wings are pretty large. While the car is going perfectly straight with no crosswind, they cause almost no drag. But, when the car turns (and needs aero help to stay on the road) they provide sideforce* (a word that I just made up...like sideways downforce). They also have a lot of leverage against body roll. The further up and further back they are...the more leverage they have.
Prodrive's Subaru WRC car has sported rear wings with multiple vertical panels to increase this surface area.
Remember, wings provide downforce to the tires to generate a sideforce to keep the rear end from spinning out. Those endplates do it directly.
You are correct. But that's not ALL that they do.Big Thurs said:Correct me if I'm wrong but, to my understanding, the vertical panels prevent lateral air movement over the wing during very high slip angles (WRC). This insures the most consistant performance from the wing.