How does yaw control in an aircraft primarily achieved?

Yaw control in an aircraft is primarily achieved through the use of the rudder. The rudder is a vertical control surface situated on the tail of the aircraft. When the pilot applies pressure to one side of the rudder, it creates a lateral force on the tail, which causes the aircraft to pivot around its vertical axis. This motion is what we refer to as "yaw," allowing the aircraft to turn left or right.

Using ailerons is associated with roll control, which affects the bank of the aircraft rather than its rotational position around the vertical axis. Elevators control pitch, determining the aircraft's angle of ascent or descent, while flaps are primarily used to increase lift during takeoff and landing, altering the shape of the wing but not directly influencing yaw. Hence, while all these controls contribute to the overall maneuverability of the aircraft, the rudder is specifically responsible for managing yaw.