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Old 07-16-2014, 04:16 PM   #76 (permalink)
aerohead
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same for cars

Quote:
Originally Posted by renault_megane_dci View Post
That is interesting ...

Is it the same for cars ?
I was told (nope, didn't red it) radius at the back is bad ...
On cars we need all the elongation we can get.If you soften the rear of a car,you kill off a little area which might have continued to produce pressure recovery.This is why Fachsenfeld,Kamm,and Morelli recommended just slicing the back off like a loaf of bread.
Lately,a Chrysler aero guy talked about 'burst,' where a chop would prevent any 'hunting' of the Cd,although,above 20-mph,Cds are constant,and it's not really a problem.
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