What is the primary function of ailerons on an aircraft?

The primary function of ailerons on an aircraft is to control roll. Ailerons are a type of control surface located on the outer wings of an aircraft. When a pilot moves the control stick or yoke to the left or right, the ailerons deflect in opposite directions: one aileron goes up while the other goes down. This differential movement creates a difference in lift between the two wings, causing the aircraft to roll toward the wing with the aileron in the up position.

By controlling roll, ailerons play a crucial role in maneuvering the aircraft for turns, bank angles, and stability during flight. This is essential for effective navigation and maintaining desired flight paths. Understanding the function of ailerons is fundamental to piloting and aircraft operation, as they directly influence the aircraft's lateral axis and overall flight dynamics.