What is the function of aileron balance panels?

Aileron balance panels are an important aerodynamic feature located on the wings of an aircraft, typically near the ailerons. Their primary function is to assist in the movement of the ailerons. By providing a surface that is more aligned with the airflow, balance panels help reduce the control forces required to move the ailerons.

When an airplane rolls, the ailerons deflect to create differential lift on the wings. However, during this movement, there can be a substantial aerodynamic force acting on the ailerons that can lead to increased stick forces required by the pilot to operate the controls. Balance panels help counteract this force, making it easier to control the aircraft.

Thus, the role of balance panels is critical in enhancing the overall flight experience by reducing the physical workload on the pilot and improving the responsiveness of the aircraft's roll control.