What is the primary function of the ailerons on a fixed-wing aircraft?

The primary function of ailerons on a fixed-wing aircraft is to control the roll of the aircraft. When the pilot moves the control stick or yoke left or right, the ailerons work in opposition to each other. One aileron rises while the other descends, causing the aircraft to roll in the desired direction. This rolling motion is essential for turning the aircraft, as it allows the wings to change their orientation relative to the horizontal plane, helping the aircraft bank into a turn.

Understanding the function of ailerons is crucial, as they enable pilots to execute maneuvers effectively and maintain control during flight. It’s important to note that while ailerons play a role in stabilization during flight, their primary function directly relates to controlling roll rather than solely stabilizing the aircraft. Similarly, controlling altitude primarily involves the elevator and the throttle, and while ailerons contribute to lift indirectly through maneuvering, their role is not to directly increase lift.