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US 11,306,657 B2Granted
Gas turbine engine including squeeze film damper with reservoir
AssigneeRaytheon Technologies Corporation
InventorsArmando Amador, Ernest Boratgis
Life of this patent
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Abstract
A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a shaft configured to rotate during operation of the gas turbine engine, and a squeeze film damper radially outside the shaft. The squeeze film damper includes a cavity including a film of lubricant axially between first and second cavity seals, and further includes a reservoir fluidly coupled to the cavity. A method is also disclosed.
Claims19
A gas turbine engine, comprising:
- a shaft configured to rotate during operation of the gas turbine engine;
- and
- a squeeze film damper radially outside the shaft, the squeeze film damper including a cavity including a film of lubricant axially between first and second cavity seals, and further including a reservoir fluidly coupled to the cavity,
- wherein the reservoir is passively fluidly coupled to the cavity such that lubricant is free to flow in and out of the reservoir during operation of the gas turbine engine,
- wherein at least one of the first and second cavity seals includes an opening fluidly coupling the cavity to the reservoir and permitting lubricant to flow in and out of the reservoir through the opening.
2 more elements
A method, comprising:
- permitting lubricant to passively flow between a cavity of a squeeze film damper and a reservoir during operation of a gas turbine engine such that the lubricant is free to flow in and out of the reservoir during operation of the gas turbine engine through an opening in a seal between the reservoir and the cavity.
Dependencies are inferred from the claim text.