Oil baffle for gas turbine fan drive gear system
AssigneeUnited Technologies Corporation
InventorsWilliam P. Sheridan, Michael E. McCune
Life of this patent
Estimating the term…
Abstract
A turbo fan engine includes a housing that supports a compressor section. At least one compressor hub is within the compressor section. A compressor shaft is arranged in the compressor section. An epicyclic gear train is coupled to the compressor shaft. At least one compressor hub and the compressor shaft are coupled at a common attachment point. The epicyclic gear train includes a carrier. A sun gear and intermediate gears are arranged about and intermeshing with the sun gear. The intermediate gears are supported by the carrier. A baffle is supported relative to the carrier and includes a lubrication passage near at least one of the sun gear and intermediate gears for directing a lubricant on at least one of the sun gear and the intermediate gears.
Claims29
A turbo fan engine comprising:
- a housing supporting a compressor section;
- and
- at least one compressor hub within the compressor section;
- a compressor shaft arranged in the compressor section;
- and
- an epicyclic gear train that is coupled to the compressor shaft, wherein the at least one compressor hub and the compressor shaft are coupled at a common attachment point, wherein the epicyclic gear train includes:
- 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 supported relative to the carrier including a lubrication passage near at least one of the sun gear and intermediate gears for directing a lubricant on at least one of the sun gear and the intermediate gears.
A turbo fan engine comprising:
- at least one compressor hub within a compressor section;
- a compressor shaft arranged in the compressor section;
- an epicyclic gear train that is coupled to the compressor shaft, wherein the at least one compressor hub and the compressor shaft are coupled at a common attachment point, wherein the epicyclic gear train includes:
- spaced apart walls with circumferentially spaced mounts interconnecting the walls, the mounts providing circumferentially spaced apart apertures between the mounts at an outer circumference of the walls;
- baffles arranged between the walls near the mounts, the baffles secured to at least one of the walls and the mounts by a fastening element, gear pockets provided between the baffles, and the baffles including a lubrication passage terminating at a respective one of the gear pockets.
A turbo fan engine comprising:
- at least one compressor hub within a compressor section;
- a compressor shaft arranged in the compressor section;
- and
- an epicyclic gear train that is driven by the compressor shaft, wherein the at least one compressor hub and the compressor shaft are coupled at a common attachment point, wherein the epicyclic gear train includes:
- spaced apart walls with circumferentially spaced mounts interconnecting the walls, the mounts providing circumferentially spaced apart apertures between the mounts at an outer circumference;
- baffles arranged between the walls near the mounts, the baffles secured to at least one of the walls and the mounts by a fastening element, gear pockets provided between the baffles, and the baffles including a lubrication passage terminating at a respective one of the gear pockets:
- wherein the lubrication passage includes a primary passage extending laterally between the walls and first and second passages in communication with the primary passage and arranged transverse to one another;
- and
- wherein intermediate gears are arranged between the baffles and intermesh with a sun gear, the first passage directed at the sun gear and the second passage directed at the intermediate gears.
A method of designing a turbo fan engine comprising:
- defining at least one compressor hub within a compressor section;
- defining a compressor shaft arranged in the compressor section, and
- defining a epicyclic gear train that is coupled to the compressor shaft, wherein the at least one compressor hub and the compressor shaft are coupled at a common attachment point.
Dependencies are inferred from the claim text.