Remove Camber Remove Drag Remove Turbulence
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Everything You Need To Know About Ailerons

Pilot Institute

These control surfaces dictate the aircraft’s roll, and this allows it to bank smoothly through turns or even recover from turbulence. The asymmetry between the top and bottom surface of the wing is called wing camber. The problem is that the aileron can only be deflected to a point after which the drag becomes significant.

Aileron 90