公开(公告)号：US11674548B2

公开(公告)日：2023-06-13

申请号：US16913019

申请日：2020-06-26

Applicant: Raytheon Technologies Corporation

Inventor： Todd A. Davis ,  Paul R. Hanrahan

IPC: F16C27/04 ,  F01D25/16 ,  F16C35/077

CPC classification number: F16C27/04 ,  F01D25/164 ,  F16C35/077 ,  F16C2360/23

Abstract: A bearing assembly of a gas turbine engine includes a bearing inner race, a bearing outer race located radially outboard of the bearing inner race and a plurality of bearing elements located between the bearing inner race and the bearing outer race. A centering spring is operably connected to and supports the bearing outer race. The centering spring is an annular structure including a base portion, a tip portion, and a plurality of beams extending axially between the base portion and the tip portion.

公开(公告)号：US20220325633A1

公开(公告)日：2022-10-13

申请号：US17851412

申请日：2022-06-28

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Todd A. Davis ,  Christopher M. Valva

IPC: F01D25/18 ,  F01D25/20 ,  F16C33/66 ,  F16C33/76

Abstract: A gas turbine engine includes a first bearing compartment and a seal assembly within the first bearing compartment that includes a rotatable seal seat, a gutter radially outward of the seal seat and fixed against rotation. The gutter includes a channel on its radially inner face. A second bearing compartment is also included. A scavenge pump is in communication with a first supply line configured to supply the first bearing compartment and a second supply line configured to supply the second bearing compartment. The gutter is in communication with the scavenge pump through a gutter scavenge line.

公开(公告)号：US11365648B2

公开(公告)日：2022-06-21

申请号：US17175828

申请日：2021-02-15

Applicant: RAYTHEON TECHNOLOGIES CORPORATION

Inventor： Brian P. Cigal ,  Todd A. Davis

IPC: F01D25/18 ,  F02C7/36 ,  F16N31/00 ,  F01D5/02 ,  F01D25/24 ,  F02C3/04 ,  F04D29/32

Abstract: A fan drive gear system for a turbofan engine is disclosed and includes a gear assembly and a front center body. The front center body is an annular case that supports the gear assembly. The front center body includes a passage portion that defines a portion of a core flow path, a forward flange configured for attachment to a first case structure forward of the front center body, and a gutter portion disposed on a radially inner side of the front center body for collecting lubricant exhausted from the geared assembly.

公开(公告)号：US11713713B2

公开(公告)日：2023-08-01

申请号：US16836001

申请日：2020-03-31

Applicant: Raytheon Technologies Corporation

Inventor： Todd A. Davis ,  Brian P. Cigal

IPC: F02C7/06 ,  F01D25/28 ,  F01D25/16 ,  F01D15/12 ,  F02K3/06 ,  F02C7/20 ,  F02C7/36

CPC classification number: F02C7/06 ,  F01D15/12 ,  F01D25/162 ,  F01D25/285 ,  F02C7/20 ,  F02C7/36 ,  F02K3/06 ,  F05D2230/60 ,  F05D2230/70 ,  F05D2230/72 ,  F05D2230/80 ,  Y02T50/60 ,  Y10T29/49245

Abstract: A gas turbine engine includes a fan that has fan blades wherein the fan delivers airflow to a bypass duct. A gearbox is defined along an engine axis. A low spool is arranged aft of the gearbox and coupled to drive the gearbox. A front center body assembly is defined around the engine axis. A flexible support supports the gearbox relative to the front center body assembly. A bearing package is mounted to the front center body assembly and the low spool. A front wall is mounted to the front center body assembly. The front wall is removable from the front center body assembly to access at least one of the gearbox or the bearing package. The low spool includes a low pressure compressor hub that provides a spline for engaging the bearing package.

公开(公告)号：US11215077B1

公开(公告)日：2022-01-04

申请号：US16994827

申请日：2020-08-17

Applicant: Raytheon Technologies Corporation

Inventor： Todd A. Davis

IPC: F01D25/16

Abstract: A bearing compartment of a gas turbine engine includes a case element, a towershaft bearing located in the case element and supportive of a towershaft, and a shaft bearing located in the case element and supportive of an engine shaft. An integral gear support and bearing damper pedestal, includes a support base secured to the case element, and a gear support arm extending from the support base to the towershaft bearing. The gear support arm is supportive of the towershaft bearing. A bearing damper pedestal extends from the support base to the shaft bearing and is located radially outboard of a bearing outer race of the shaft bearing.

公开(公告)号：US20210404480A1

公开(公告)日：2021-12-30

申请号：US16913019

申请日：2020-06-26

Applicant: Raytheon Technologies Corporation

Inventor： Todd A. Davis ,  Paul R. Hanrahan

IPC: F04D29/059 ,  F16C19/36 ,  F16C33/58 ,  F16C35/073

Abstract: A bearing assembly of a gas turbine engine includes a bearing inner race, a bearing outer race located radially outboard of the bearing inner race and a plurality of bearing elements located between the bearing inner race and the bearing outer race. A centering spring is operably connected to and supports the bearing outer race. The centering spring is an annular structure including a base portion, a tip portion, and a plurality of beams extending axially between the base portion and the tip portion.

公开(公告)号：US20210348565A1

公开(公告)日：2021-11-11

申请号：US16871163

申请日：2020-05-11

Applicant: Raytheon Technologies Corporation

Inventor： Todd A. Davis ,  Brian P. Cigal

IPC: F02C7/36 ,  F02K3/06 ,  F02C7/06

Abstract: A gas turbine engine includes, among other things, a fan, a fan drive gear system that is coupled with the fan and a fan drive input shaft, a compressor section that includes a first compressor and a second compressor, and a turbine section. The turbine section includes a first turbine coupled with a first shaft and a second turbine coupled through a second shaft to the second compressor. A bearing supports the fan drive input shaft. The bearing is located proximal to, and radially spaced from, a forward end of the first shaft. The bearing includes a speed sensor target that is rotatable with the forward end and that defines a rotation path. A speed sensor probe is situated proximal to the rotation path and is operable to read the speed sensor target.