What is the function of the aileron differential?

The function of aileron differential is primarily aimed at improving roll rate while simultaneously reducing adverse yaw during turns. Ailerons are used to control the roll of the aircraft, and differential ailerons are designed such that one aileron deflects more than the other. When the aircraft rolls in one direction, the aileron on that wing raises, while the aileron on the opposite wing lowers, creating a difference in lift and drag.

By employing aileron differential, the aircraft can maintain a smoother and more controlled roll without experiencing significant yawing in the opposite direction, which is known as adverse yaw. This ability to mitigate adverse yaw enhances the pilot's control over the aircraft during turns, leading to a more efficient and coordinated flight. Essentially, the design of aileron differential can lead to better aerodynamic performance and stability during maneuvers, making it a vital aspect of flight control systems.