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Airfoil Drag Video

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Speedy11(at)aol.com
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Posted: Tue Jan 11, 2011 3:51 pm Post subject: Airfoil Drag Video

I am far from an aero expert, but I found the video  interesting.  I did not grasp the inference that a round shape has more  drag than a rectangular one.  Rather I understood that a streamlined shape  has less drag than a round one.  I guess it was made for laymen like  me.

 Stan Sutterfield

  

 Not repeatable therefore not real useful for comparison. The guy  should

rotate the airfoils to minimum drag each time, otherwise, he doesn't  know if

they are in comparable positions. It's also a shame he didn't replace  the

airfoil with an equal-flow-area rectangular shape. As a result he  produces

confusing and misleading results, inferring that a round shape has  more drag

than a rectangular shape!

  [quote][b]

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