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Old 03-13-2023, 12:09 PM   #176 (permalink)
aerohead
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adjustment

Quote:
Originally Posted by Mcgiiver View Post
When figuring the frontal area using width, is it the car width or total width including side mirrors? Is there any adjustment made to total hieght to account for a sloping roof?
The overall height of the vehicle, and it's width ( without mirrors ) is used.
The actual 'shadow' is what's measured.
When CAR and DRIVER went to the A2 Wind Tunnel to do their 'Drag Queens' testing, they set up a camera at 200- feet or meters from the cars. And typically, a reference 'area' or ruler is captured within the footprint of the image.
It's scanned into software, where the area is reduced to a pixel count, compared to the reference area, or 'length' captured.
They used a package from SEIMENS.
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