PPRuNe Forums - View Single Post - Rotor profile power and induced power
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Old 20th Mar 2001, 02:53
  #4 (permalink)  
212man
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No, I don't think that is correct. Profile drag is composed of form drag and skin friction. The form drag is the physical resistance to moving a solid object through the air and is reduced by reducing the thickness/cord ratio, the friction is self evident. That's why it's called 'profile' as it reflects the effect that the blade profile has on drag.

The other factors you refer to would come under the heading of installed losses.

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