What primary flight control affects yaw?

The primary flight control that affects yaw is the rudder. Yaw refers to the rotation of the aircraft about its vertical axis, which causes the nose of the aircraft to move left or right. The rudder is designed specifically to control this movement by creating aerodynamic forces that push the tail of the aircraft in the opposite direction of the desired yaw motion.

When the pilot presses on one of the rudder pedals, it deflects the rudder to one side, directing airflow in a way that helps to counteract undesired yaw caused by other factors, such as engine power changes or adverse yaw during a turn. This control is essential for maintaining coordinated flight, ensuring the aircraft maintains balance and stability during maneuvers.

In contrast, ailerons control roll, which is the rotation about the longitudinal axis of the aircraft, and elevators control pitch, which affects the aircraft’s attitude in relation to the horizon. Flaps contribute to lift and drag but do not play a direct role in yaw control. Understanding the distinct roles of these primary flight controls is critical for effective aircraft handling during flight.