The invention provides a helicopter blade embedded type radial motion shimmy damper. The helicopter blade embedded type radial motion shimmy damper comprises an upper shell, a lower shell and a sliding bearing for connecting the bottom of the upper shell and the top part of the lower shell, wherein a viscous-elastic damper and a counter weight are sequentially arranged inside the upper shell from top to bottom, and an adjusting screw, a line spring and a disc spring assembly are arranged inside the lower shell. According to the helicopter blade embedded type radial motion shimmy damper, the non-linear spring assembly formed by the disc spring and the line spring is integrated; when a helicopter rotor works, the non-linear spring assembly is compressed into a quai-zero-stiffness interval due to the action of centrifugal force, the static stiffness of the non-linear spring assembly is high and the dynamic stiffness of the non-linear spring assembly is low, and the spring-mass block vibration absorption system formed by the spring assembly and the counter weight can provide damping for shimmy motion in a wide frequency range.
Helicopter blade embedded type radial motion shimmy damper
2015-06-03
Patent
Elektronische Ressource
Englisch
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