Patent ID: 11879498
Assignee: GENERAL ELECTRIC COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A rotor damping device for a turbomachine, comprising:
a first fluid damper;
a second damper in communication with the first fluid damper, the second damper comprising a wire mesh;
a sidewall portion radially inside a static structure; and
a squirrel cage configured to take up an axial load, the second damper mounted on the squirrel cage,
wherein the first fluid damper transitions between a working condition in which the first fluid damper dampens vibration of the turbomachine and an interruption condition in which the first fluid damper does not dampen vibration of the turbomachine,
wherein, during the interruption condition, the wire mesh of the second damper dampens vibration of the turbomachine; and
wherein the wire mesh is contained within the sidewall portion to constrain axial deflection and apply a preload,
wherein the second damper is in parallel configuration with the first fluid damper.