What is used to counteract Dutch roll in swept-wing aircraft?

What is used to counteract Dutch roll in swept-wing aircraft?

• A. Feedback loop
• B. Yaw-damper system
• C. Stabilator
• D. Winglets

Answer: (B)

In swept-wing aircraft, the yaw-damper system is specifically designed to counteract Dutch roll, which is an oscillatory motion involving both yaw and roll. This undesirable motion can occur due to the unique aerodynamic characteristics of swept wings, which can be more prone to lateral-directional stability issues. The yaw-damper system actively senses the yaw rate of the aircraft and adjusts control surfaces, such as the rudder, to provide corrective input. By applying this corrective force, the yaw-damper maintains stability and controls any excessive lateral movement, effectively damping out the oscillations characteristic of a Dutch roll. Understanding the function of the yaw-damper is crucial, especially in multi-engine aircraft where asymmetric thrust can contribute to yaw problems. While other options like feedback loops, stabilators, and winglets contribute to overall aircraft performance and stability in various scenarios, they do not specifically target the dynamic issues presented by Dutch roll as effectively as the yaw-damper system does.

In swept-wing aircraft, the yaw-damper system is specifically designed to counteract Dutch roll, which is an oscillatory motion involving both yaw and roll. This undesirable motion can occur due to the unique aerodynamic characteristics of swept wings, which can be more prone to lateral-directional stability issues.

The yaw-damper system actively senses the yaw rate of the aircraft and adjusts control surfaces, such as the rudder, to provide corrective input. By applying this corrective force, the yaw-damper maintains stability and controls any excessive lateral movement, effectively damping out the oscillations characteristic of a Dutch roll.

Understanding the function of the yaw-damper is crucial, especially in multi-engine aircraft where asymmetric thrust can contribute to yaw problems. While other options like feedback loops, stabilators, and winglets contribute to overall aircraft performance and stability in various scenarios, they do not specifically target the dynamic issues presented by Dutch roll as effectively as the yaw-damper system does.