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Mxsmanic wrote
How do autopilots make coordinated turns even when they cannot control the rudder? From Wikipedia, the free encyclopedia An unwanted side-effect of aileron operation is adverse yaw — a yawing moment in the opposite direction to the turn generated by the ailerons. In other words, using the ailerons to roll an aircraft to the right would produce a yawing motion to the left. It is caused by an increase in induced drag due to the greater effective camber of the wing with a downward- deflected aileron, and the opposite effect on the other wing. Modern aileron systems have minimal adverse yaw, such that it is barely noticeable in most turns. This may be accomplished by the use of differential ailerons, which have been rigged such that the downgoing aileron deflects less than the upward-moving one. Frise ailerons achieve the same effect by protruding beneath the wing of an upward deflected aileron, increasing drag on that side. Ailerons may also use a combination of these methods. Bob Moore |
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