Oil baffle for gas turbine fan drive gear system
AssigneeUnited Technologies Corporation
InventorsWilliam G. Sheridan, Michael E. McCune
Life of this patent
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Abstract
A gas turbine engine includes an epicyclic gear train that drives a turbo fan. The epicyclic gear train employs a one-piece carrier in which the spaced side walls are interconnected with circumferentially spaced apart mounts to form a unitary structure. Baffles are secured to the carrier near the mounts and provide lubrication passages that spray oil onto the sun gear and/or intermediate gears arranged between the baffles. The baffles can be constructed from a different material than the carrier since the baffles are not structural components in the gear train.
Claims8
A turbine engine comprising:
- a housing supporting compressor and turbine sections;
- and
- an epicyclic gear train including:
- a carrier;
- a sun gear and intermediate gears arranged about and intermeshing with the sun gear, the intermediate gears supported by the carrier;
- and
- a baffle secured to the carrier by a fastening member, the baffle including a lubrication passage near at least one of the sun gear and intermediate gears for directing a lubrication on the at least one of the sun gear and intermediate gears.
A turbine engine comprising:
- a housing supporting compressor and turbine sections;
- and
- an epicyclic gear train including:
- a carrier;
- a sun gear and intermediate gears arranged about and intermeshing with the sun gear, the intermediate gears supported by the carrier;
- a baffle secured to the carrier by a fastening member, the baffle including a lubrication passage near at least one of the sun gear and intermediate gears for directing a lubrication on the at least one of the sun gear and intermediate gears;
- and
- a spray bar external to the carrier and in communication with the lubrication passage, the spray bar terminating near the sun gear for directing lubrication on the sun gear.
Dependencies are inferred from the claim text.