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Old 11-21-2014, 06:22 PM   #16 (permalink)
aerohead
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gain

Quote:
Originally Posted by serialk11r View Post
Why do you need double curvature when there is so little separation on the roof? Is that even going to be a measurable gain?
We don't have a lot to work with on this one.
The fluids texts do push the convex hemisphere for sub-transonic flow,of which the double curvature shares its heritage.
The velocity/pressure profiles would be sweet.
Many record cars have used them to good effect.
There is a paper from Cal Tech,in 1974,which showed this windshield as the lowest in drag.
R.G.S.White of MIRA's wind tunnel,in his 1968 recipe for a Cd 0.245 car showed this windshield,quantitatively as the lowest drag of all.It's not a lot though in the grand scheme of things.
Hucho infers that we don't see them because of their added expense.
Cheapest I've seen is $3,000.
If we go back to DARKO Technologies wind tunnel,we could take a composite mockup of one,tape it on over an existing glass and measure the difference.
I've considered running my '96 Camaro backlight over the windshield of the T-100 as a bug screen,with an operational wiper.I'd still have the 'actual' laminated safety glass underneath.Vision would be an issue.Bonneville said "not no,but hell no!",otherwise I'd have had it there in 2012.
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