Damping faults in a helicopter rotor hub are diagnosed by using vibration signals from the fuselage.Faults include the defective lag damper and raspings in its flap and feathering hinges.

• 摘要研究了仅用机体振动信号诊断旋翼减摆器阻尼失效、轴向铰卡涩和水平铰卡涩3种桨毂阻尼故障的可行性。