Rtx Corporation

Robert G Murphy, Ii

Paul R Hanrahan

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.

Fluid damper for turbine engine geartrain assembly

An engine assembly is provided that includes a geartrain, a rotating structure and a support structure. The geartrain includes a sun gear, a ring gear, a plurality of intermediate gears and a carrier. The intermediate gears are arranged circumferentially about the axis in an array. Each of the intermediate gears are radially between and meshed with the sun gear and the ring gear. Each of the intermediate gears is rotatably mounted to the carrier. The carrier is rotatable about the axis. The rotating structure forms the carrier. The rotating structure includes a shaft and a rotating structure passage. The support structure circumscribes the shaft with a plenum formed by and radially between the support structure and the shaft. The support structure includes a support structure passage. The plenum fluidly couples the support structure passage to the rotating structure passage.

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New Haven, CT, United States of America

Robert G Murphy, Ii