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#11
September 29th 03, 03:01 AM
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"Tarver Engineering" wrote...
So one doesn't use rudder when doing a manual turn as one does on every other aircraft made? The YAW damper moves the rudder for the airplane, no human workload is involved. The yaw damper does move the rudder, but its function is not to keep the ball centered. Its function is to reduce yaw oscillations around the [normally 0] slip angle induced by the current airplane trim. Only if there is an active 3-axis autopilot will the rudder be trimmed automatically. There is NO automatic rudder trim in the 747-400 except during autoland operations below 1500' AGL. 
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