What is the purpose of yaw dampers in aviation?

Yaw dampers play a crucial role in maintaining the stability and control of an aircraft during flight. Their primary purpose is to prevent unwanted yaw oscillations, which are lateral movements around the vertical axis of the aircraft. These oscillations can occur due to various flight conditions, including turbulence or asymmetric thrust, and can lead to discomfort for passengers and potential difficulty in controlling the aircraft.

By automatically adjusting the control surfaces, yaw dampers help to ensure smoother flight characteristics, enhancing both safety and passenger comfort. This stabilization is vital, especially during maneuvers such as turns or when responding to changes in wind conditions. Consequently, the correct answer reflects the yaw damper's essential function in aviation control systems.