公开(公告)号：US20250052202A1

公开(公告)日：2025-02-13

申请号：US18446088

申请日：2023-08-08

Applicant: RTX CORPORATION

Inventor： Mark A. Klein ,  Michael E. McCune

IPC: F02C7/36 ,  F02C7/06

Abstract: A fan drive gear system for a turbine engine includes a gear system with a plurality of compound intermediate gears that each include a first gear portion and a second gear portion. The second gear portion includes a forward gear portion and an aft gear portion and a ring gear assembly includes a forward ring gear that is engaged to the forward gear portion and an aft ring gear that is engaged to the aft gear portion. A carrier supports rotation of the plurality of intermediate gears with a plurality of corresponding journal bearing assemblies.

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.