Quote:
Originally Posted by tasdrouille
I will quote the article...
lets read that again, but just the interesting part...
What is aerodynamic drag? CdA. The Cd can be higher, but that doesn't mean the drag forces go up overall. Mirrors are more or less 5% of the frontal area. On a .30 Cd car that's a 15 points Cd increase needed to offset the gains from the reduction in area.
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I won't be able to put my hands on it anytime soon,but in the past it has been reported that the EPA ignores mirrors and their frontal area in certification of new cars.
If the Cd reflected the drag of the mirrors,it would skew the CdA of the car,as the CdA would be figured on the smaller frontal area of the car sans mirrors.
It's kind of a book-keeping foible.I'll try and dredge that up.
