公开(公告)号：US20250092824A1

公开(公告)日：2025-03-20

申请号：US18370515

申请日：2023-09-20

Applicant: RTX CORPORATION

Inventor： Francis Parnin ,  Mark A. Klein

IPC: F02C7/06 ,  F02C7/36

Abstract: A fan drive gear system for a turbine engine includes a sun gear that is configured to be driven by an engine shaft that is rotatable about an axis, a plurality of intermediate gears that are intermeshed with the sun gear, a ring gear assembly that is engaged with the plurality of intermediate gears, the ring gear is configured for attachment to a static structure, a carrier that supports rotation of the plurality of intermediate gears, the carrier configured for rotation about the axis, at least one baffle that is attached to the carrier that is configured to impart a momentum on expelled lubricant, a fixed gutter that is disposed radially outside the at least one baffle and is configured to receive lubricant that is exhausted from the at least one baffle, and a fan shaft that is rotatable about the axis and configured to be driven by the carrier.

公开(公告)号：US20250075659A1

公开(公告)日：2025-03-06

申请号：US18458640

申请日：2023-08-30

Applicant: RTX Corporation

Inventor： Marc J. Muldoon ,  Francis Parnin

IPC: F02C7/06 ,  F02C7/36

Abstract: A disclosed turbine engine having a fan drive gear system includes a first lubrication circuit having a first pump communicating oil to at least the fan drive gear system and at least one low shaft bearing assembly. The first pump is driven by the low spool through a first tower shaft. A second lubrication circuit includes a second pump driven by one of a high spool and the low spool separate from the first pump and communicates oil to engine components separate from the first lubrication system.

公开(公告)号：US12270336B1

公开(公告)日：2025-04-08

申请号：US18370515

申请日：2023-09-20

Applicant: RTX CORPORATION

Inventor： Francis Parnin ,  Mark A. Klein

IPC: F02C7/06 ,  F02C7/36

Abstract: A fan drive gear system for a turbine engine includes a sun gear that is configured to be driven by an engine shaft that is rotatable about an axis, a plurality of intermediate gears that are intermeshed with the sun gear, a ring gear assembly that is engaged with the plurality of intermediate gears, the ring gear is configured for attachment to a static structure, a carrier that supports rotation of the plurality of intermediate gears, the carrier configured for rotation about the axis, at least one baffle that is attached to the carrier that is configured to impart a momentum on expelled lubricant, a fixed gutter that is disposed radially outside the at least one baffle and is configured to receive lubricant that is exhausted from the at least one baffle, and a fan shaft that is rotatable about the axis and configured to be driven by the carrier.

公开(公告)号：US12049850B1

公开(公告)日：2024-07-30

申请号：US18370511

申请日：2023-09-20

Applicant: RTX CORPORATION

Inventor： Francis Parnin ,  David Allen Stachowiak ,  Marc J. Muldoon

IPC: F02C7/36 ,  F01D25/18 ,  F02C7/06

CPC classification number: F02C7/36 ,  F01D25/18 ,  F02C7/06 ,  F05D2220/36 ,  F05D2260/40311 ,  F05D2260/98

Abstract: A fan drive gear system for a turbine engine includes a sun gear that is configured to be driven by an engine shaft that is rotatable about an axis, a plurality of intermediate gears that are intermeshed with the sun gear, a ring gear assembly that is engaged with the plurality of intermediate gears, the ring gear configured for attachment to a static structure, a carrier that supports rotation of the plurality of intermediate gears, the carrier configured for rotation about the axis, a fixed gutter system that is configured to receive expelled lubricant and to direct the expelled lubricant to an auxiliary reservoir, at least one ejector that is disposed within the fixed gutter and configured to utilize a motive flow to generate a lubricant flow through at least one outlet, and a fan shaft that is rotatable about the axis and configured to be driven by the carrier.