Gearbox assembly having a segmented scavenge gutter for a turbine engine

Patent metadata

Field	Value
Publication number	US-2026063196-A1
Application number	US-202418817510-A
Country	US
Kind code	A1
Filing date	Aug 28, 2024
Priority date	Aug 28, 2024
Publication date	Mar 5, 2026
Grant date	—

Abstract

A gearbox assembly for a turbine engine. The gearbox assembly includes a gearbox having a plurality of gears, and a scavenge gutter radially outward of the gearbox and mounted to a fan frame flange of a fan frame of the turbine engine, the scavenge gutter being configured to collect lubricant that is ejected by the plurality of gears of the gearbox during rotation of the plurality of gears. An interface between the fan frame flange and the scavenge gutter is located at a first radial distance R1 relative to a longitudinal centerline axis of the turbine engine and the scavenge gutter is located at a second radial distance R2 relative to the longitudinal centerline axis. The second radial distance R2 is greater than the first radial distance R1. The scavenge gutter is segmented and includes a plurality of sector portions joined together to form the scavenge gutter.

First claim

1 . A gearbox assembly for a turbine engine, the gearbox assembly comprising:
a gearbox having a plurality of gears; and a scavenge gutter radially outward of the gearbox and mounted to a fan frame flange of a fan frame of the turbine engine, the scavenge gutter being configured to collect lubricant that is ejected by the plurality of gears of the gearbox during rotation of the plurality of gears, wherein an interface between the fan frame flange and the scavenge gutter is located at a first radial distance R 1 relative to a longitudinal centerline axis of the turbine engine and the scavenge gutter is located at a second radial distance R 2 relative to the longitudinal centerline axis, the second radial distance R 2 is greater than the first radial distance R 1 , and wherein the scavenge gutter is segmented and comprises a plurality of sector portions joined together to form the scavenge gutter.

2 . The gearbox assembly of claim 1 , wherein the scavenge gutter is annular and is segmented in a circumferential direction around the longitudinal centerline axis.

3 . The gearbox assembly of claim 1 , wherein the scavenge gutter is annular and is segmented in a longitudinal direction along the longitudinal centerline axis.

4 . The gearbox assembly of claim 1 , wherein the scavenge gutter is an integral part of the fan frame.

5 . The gearbox assembly of claim 4 , wherein the scavenge gutter is formed from a same material as the fan frame.

6 . The gearbox assembly of claim 1 , wherein the plurality of sector portions comprises a first plurality of sector portions and a second plurality of sector portions, the first plurality of sector portions and the second plurality of sector portions are joined together to form the scavenge gutter, the first plurality of sector portions are alternated with the second plurality of sector portions, and the first plurality of sector portions are in contact with the second plurality of sector portions via a plurality of sealing members.

7 . The gearbox assembly of claim 6 , wherein the first plurality of sector portions are overlapping with the second plurality of sector portions and the sealing members are provided between overlapping portions of the first plurality of sector portions and the second plurality of sector portions.

8 . The gearbox assembly of claim 1 , further comprising a mounting assembly configured to mount the scavenge gutter to the fan frame.

9 . The gearbox assembly of claim 8 , wherein the mounting assembly comprises a first plurality of fastener segments that are connected to the fan frame, a second plurality of fastener segments that are not connected to the fan frame, and a stopper configured to apply a force on the second plurality of fastener segments so as to prevent the scavenge gutter from disconnecting from the mounting assembly.

10 . The gearbox assembly of claim 9 , wherein the scavenge gutter has a plurality of arms that are configured to mate to the first plurality of fastener segments and the second plurality of fastener segments.

11 . The gearbox assembly of claim 9 , wherein the stopper is configured to apply a force on the second plurality of fastener segments against one or more of the plurality of arms.

12 . A turbine engine comprising:
a fan frame and a fan frame flange connected to the fan frame; and a gearbox assembly comprising:
a gearbox having a plurality of gears; and
a scavenge gutter radially outward of the gearbox and mounted to the fan frame flange, the scavenge gutter being configured to collect lubricant that is ejected by the plurality of gears of the gearbox during rotation of the plurality of gears,
wherein an interface between the fan frame flange and the scavenge gutter is located at a first radial distance R 1 relative to a longitudinal centerline axis of the turbine engine and the scavenge gutter is located at a second radial distance R 2 relative to the longitudinal centerline axis, the second radial distance R 2 is greater than the first radial distance R 1 , and
wherein the scavenge gutter is segmented and comprises a plurality of sector portions joined together to form the scavenge gutter.

13 . A method of mounting a gearbox assembly having a gearbox and a scavenge gutter to a fan frame flange of a turbine, the method comprising:
passing a first sector portion of the scavenge gutter of the gearbox assembly between the fan frame flange and a longitudinal centerline axis of the turbine; mounting the first sector portion of the scavenge gutter to a plurality of fastener segments of a mounting assembly; passing a second sector portion of the scavenge gutter of the gearbox assembly between the fan frame flange and the longitudinal centerline axis of the turbine; mounting the second sector portion of the scavenge gutter to the plurality of fastener segments of the mounting assembly; passing the gearbox of the gearbox assembly between the fan frame flange and the longitudinal centerline axis of the turbine; and mounting the gearbox to the fan frame flange to support the gearbox.

14 . The method of claim 13 , further comprising repeating mounting the first sector portion of the scavenge gutter and mounting the second sector portion of the scavenge gutter, until all sector portions of the scavenge gutter are mounted.

15 . The method of claim 13 , further comprising mounting the first sector portion of the scavenge gutter and mounting the second sector portion of the scavenge gutter, prior to mounting the gearbox to the fan frame flange.

16 . The method of claim 13 , further comprising mounting the first sector portion of the scavenge gutter and mounting the second sector portion of the scavenge gutter, after mounting the gearbox to the fan frame flange.

17 . The method of claim 13 , wherein mounting the first sector portion of the scavenge gutter to the plurality of fastener segments comprises mating a plurality of arms of the first sector portion of the scavenge gutter to the plurality of fastener segments.

18 . The method of claim 17 , further comprising locking one or more of the plurality of fastener segments against the one or more of the plurality of arms using a stopper so as to prevent the first sector portion of the scavenge gutter from disconnecting from the mounting assembly.

19 . The method of claim 13 , wherein mounting the second sector portion of the scavenge gutter to the plurality of fastener segments comprises mating a plurality of arms of the second sector portion of the scavenge gutter to the plurality of fastener segments.

20 . The method of claim 19 , further comprising locking one or more of the plurality of fastener segments against the one or more of the plurality of arms using a stopper so as to prevent the second sector portion of the scavenge gutter from disconnecting from the mounting assembly.

Assignees

• Gen Electric

Inventors

• Miller Brandon W
• Pezzi Paul
• Unsal Arda
• Hudecki Andrew

Classifications

• F16H57/0423 Primary

  Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes · CPC title

• F05D2260/98

  Lubrication · CPC title

• F01D25/18 Primary

  Lubricating arrangements (of machines or engines in general F01M) · CPC title

• F16H57/0453 Primary

  Section walls to divide a gear sump · CPC title