The purpose of the rudder is to rotate the aircraft about the _______________ axis.

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Multiple Choice

The purpose of the rudder is to rotate the aircraft about the _______________ axis.

Explanation:
The rudder produces yaw, which is rotation about the vertical axis. The rudder is a movable surface on the tail that deflects airflow to create a side force, turning the aircraft left or right and changing its heading without tilting the wings. The other axes correspond to different controls: rolling about the longitudinal axis is done by the ailerons, and pitching about the lateral axis is done by the elevator. So the vertical axis is the one that matches the rudder’s effect.

The rudder produces yaw, which is rotation about the vertical axis. The rudder is a movable surface on the tail that deflects airflow to create a side force, turning the aircraft left or right and changing its heading without tilting the wings. The other axes correspond to different controls: rolling about the longitudinal axis is done by the ailerons, and pitching about the lateral axis is done by the elevator. So the vertical axis is the one that matches the rudder’s effect.

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