Which control surface is used to control yaw in an aircraft?

Yaw is the rotational movement of an aircraft around its vertical axis, and it is primarily controlled by the rudder. The rudder is a vertical control surface located on the tail of the aircraft. When the pilot deflects the rudder to the left or right, it causes the aircraft's nose to move in the corresponding direction, thus controlling the yaw of the aircraft.

The elevators, located on the horizontal stabilizer, control pitch, allowing the aircraft to ascend or descend. Ailerons, located on the wings, control roll, allowing the aircraft to tilt to the left or right. Flaps, also found on the wings, primarily increase lift during takeoff and landing but do not affect yaw. The distinction between these control surfaces is crucial, as each one impacts a different aspect of the aircraft's movement in three-dimensional space. Therefore, the rudder is specifically designed to manage yaw and ensure stable flight during maneuvers.