Quote:
Originally Posted by Frank Lee
Is that for true laminar flow, which we aren't going to get on the street anyway?
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Frank,the solar racers which use them are only laminar on their bodies up to their maximum cross-section,where the 1st minimum pressure occurs,and boundary layer jumps to a turbulent boundary layer.The wheel fairings up front would behave the same way.The rear fairings would be potentially running in the turbulence of the front wheel fairings.
So we shouldn't consider them laminar unless they were running solo,on a closed-course,on a windless day,at very low velocity.
I think some of the cars have been tested upwards of 90-mph (Honda Dream-2)
The Cd 0.12 1957 MG EX 181 would not be a laminar car,running 250-mph.
Come September 9th I hope to have some definitive data,as the T-100 will sport completely illegal- depth wheel fairings in the wind tunnel, which simulate 'active' fairings deployed only above 45-mph highway driving.
PS: Also,Hucho tells us in his books that the only way for a passenger car to approach Cd 0.08,is to further integrate the wheels into the body.Which implies the use of fairings.
Ford got to Cd 0.137 with their 1985 Prove-V by bringing the wheels into the body and fairing them a bit.They could go lower with active devices.
