In aviation, "flutter" refers to a dangerous aerodynamic phenomenon in which aircraft parts, such as wings and control surfaces, vibrate uncontrollably as speed increases.

This self-reinforcing vibration can lead to structural damage or even a crash.

To prevent flutter, ground and flight tests are performed to determine an aircraft's critical speed and ensure structural stability.

Flutter is a dynamic, unstable vibration caused by the interaction between aerodynamic forces, the elasticity of the structure and inertia forces.

Dangerous phenomenon:

It often begins with a slight vibration that becomes increasingly stronger as airspeed increases. This can lead to fractures and the disintegration of aircraft components.

Common locations:
Wings, control surfaces (such as ailerons and rudders), and the main rotor blades of helicopters can experience flutter