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Frise ailerons

 Frise ailerons

  •  or other specially shaped ailerons  This is a patented device, the idea being so to shape the aileron that when it is moved downward the complete top surface of the main plane and the aileron will have a smooth.
  • uninterrupted contour causing very little drag, but when it is moved upwards the aileron, which is of the balanced variety.
  •   will project below the bottom surface of the main plane and cause excessive drag. This method has the great advantage of being simple.
  •  and it undoubtedly serves to decrease the bad yawing effect of the ailerons, and therefore it is often
  • used. Unfortunately, its effects are not drastic enough.


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