06-17-2008, 07:04 PM
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#1
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Registered Member
Join Date: Apr 2008
Posts: 217
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Quote:
Originally Posted by sonyhome
Bottom line: 2X speed = 4X drag force, 3X = 9X force etc. Squared indeed. However, the power dissipated seems to be cubed... but you have to take into account the total time to travel a fixed distance, to figure out your net energy cost (you cube but then you actually go faster on that distance). Argh help.
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Yes, if I'd pulled my head out of my arse I would have taken the next step and calculated the work equation. Pale is correct. I'm a dullard. D'oh.
Quote:
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If you know the drag % of the underbody (or the wheels), and the drag of an air dam, you could tell if adding an air dam is likely to provide any benefits (increasing the frontal surface S, aka A, but reduces Cd by some amount)...
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I think it's a bit more complicated than that, since the drag is a function of the entire body, and the interactions between the components is not linear. But I think your point has merit....
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