What is the primary function of ailerons?

Ailerons are primary flight control surfaces located on the wings of an aircraft, and their main function is to control the roll of the aircraft around its longitudinal axis. When a pilot moves the control stick or yoke left or right, the ailerons move in opposite directions. One aileron will deflect upward while the other deflects downward. This creates an imbalance of lift, causing the aircraft to roll toward the side with the upward-deflected aileron.

Controlling roll is essential for maneuvering the aircraft during flight, especially during turns. Ailerons work in conjunction with other control surfaces, such as the elevators (which control pitch) and the rudder (which controls yaw), but their specific role is solely related to roll control. Understanding the function of ailerons is crucial for comprehending how pilots achieve desired flight attitudes and maneuvers.