Thread: spoiler - form follows function?
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Old Sep 20, 2005 | 12:36 PM
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malcb
Joined: May 2005
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From: UK
Default Re: spoiler - form follows function?
Originally Posted by RickB
I got out my old textbooks, and I guess my memory isn't what it used to be. Yes, the drag is a function of the velocity squared.
I have impressed my self, calc in earlier post of mine gives force at 150 mph as well give 40 lb at 60 mph, is the correct as well?


I had a quick look a NASA site with a simple model function - seems easy to make the figures match 40 lb using a plate as opposed to a wing - perhaps too easy.

Separation of airflow is important to consider. As well as providing downforce with a wing the spoiler function could be forming turbulence in the join of airflows over and under the car, so reducing the lift generated by the cars shape.

NASA Foil calc site http://www.grc.nasa.gov/WWW/K-12/airplane/foil2.html
 
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