What does the Yaw Damper do in the CRJ?

The Yaw Damper in the CRJ is a crucial component for maintaining directional stability and control during flight. Its primary function is to reduce or eliminate yawing motions caused by factors such as turbulence, uneven winds, or aerodynamic imbalances. The system automatically detects these unwanted yaw movements and applies corrective inputs to the aircraft's rudder, helping the pilots maintain a straight and stable flight path.

By ensuring that the aircraft does not drift off its intended course, the Yaw Damper enhances the overall handling and stability of the airplane, especially during cruise flight and approach phases. This function is vital for safe and efficient operation, particularly in adverse weather conditions or when making coordinated turns.

In contrast, the other choices pertain to different systems or functionalities that do not relate to the Yaw Damper's role. For example, increasing thrust for takeoff, controlling cabin pressure, or activating thrust reversers are separate operations that do not influence the yaw stability and control that the Yaw Damper provides.