Fluid damper for turbine engine geartrain assembly
AssigneeRtx Corporation
InventorsPaul R. Hanrahan, Robert G. Murphy, II
Life of this patent
Estimating the term…
Abstract
An engine assembly is provided that includes a geartrain, a device and a fluid damper. The geartrain is configured as or otherwise includes an epicyclic gear system. A first component of the geartrain is rotatable about an axis. The device is configured to brake and/or lock rotation of the first component of the geartrain about the axis. The device is configured as or otherwise includes a device structure. The fluid damper engages the device structure. The fluid damper is configured to damp vibrations in the device.
Claims19
An engine assembly, comprising:
- a stationary structure;
- a geartrain comprising an epicyclic gear system, a first component of the geartrain rotatable about an axis;
- a device configured to at least one of brake or lock rotation of the first component of the geartrain about the axis, the device comprising a device structure;
- and
- a fluid damper engaging the device structure, the fluid damper configured to damp vibrations in the device, and the fluid damper connected to the stationary structure through a compliant coupling.
An engine assembly, comprising:
- a geartrain including a sun gear, a ring gear, a plurality of intermediate gears and a carrier, the sun gear rotatable about an axis, the ring gear circumscribing the sun gear, the plurality of intermediate gears arranged circumferentially about the axis in an array, each of the plurality of intermediate gears radially between and meshed with the sun gear and the ring gear, and each of the plurality of intermediate gears rotatably mounted to the carrier;
- a brake configured to brake rotation of the ring gear or the carrier about the axis, the brake comprising a brake housing;
- a fluid damper configured to damp vibrations in the brake, the fluid damper circumscribing the brake housing with a lubricant plenum formed by and radially between the fluid damper and the brake housing;
- and
- a lubricant circuit configured to deliver lubricant to the lubricant plenum.
An engine assembly, comprising:
- a geartrain including a sun gear, a ring gear, a plurality of intermediate gears and a carrier, the sun gear rotatable about an axis, the ring gear circumscribing the sun gear, the plurality of intermediate gears arranged circumferentially about the axis in an array, each of the plurality of intermediate gears radially between and meshed with the sun gear and the ring gear, and each of the plurality of intermediate gears rotatably mounted to the carrier;
- a lock device configured to lock rotation of the ring gear or the carrier about the axis, the lock device comprising a device housing;
- a fluid damper configured to damp vibrations in the lock device, the fluid damper circumscribing the device housing with a lubricant plenum formed by and radially between the fluid damper and the device housing;
- and
- a lubricant circuit configured to deliver lubricant to the lubricant plenum.
Dependencies are inferred from the claim text.