公开(公告)号：US20250101916A1

公开(公告)日：2025-03-27

申请号：US18972172

申请日：2024-12-06

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Bugra H. Ertas ,  Xiaohua Zhang ,  Miriam Manzoni ,  Flavia Turi ,  Andrea Piazza ,  Arthur W. Sibbach ,  Brandon W. Miller

IPC: F02C7/06 ,  F16H57/04 ,  F16N7/38

Abstract: A gas turbine engine includes a gearbox assembly that includes a gearbox and a gutter for collecting a gearbox lubricant scavenge flow from the gearbox. The gutter is characterized by a lubricant extraction volume ratio between 0.01 and 0.3, inclusive of the endpoints. The lubricant extraction volume ratio defined by: V G V G ⁢ B · V G is a gutter volume of the gutter and VGB is a gearbox volume. The gas turbine engine includes a lubricant flow control system that includes a variable flow lubricant pump that generates a pump variable flow of lubricant to the gearbox assembly. The gearbox assembly has a variable consumption demand for delivery of lubricant. A lubricant flow controller is configured to generate a pump control command for the variable flow lubricant pump to produce the pump variable flow of lubricant based on the variable consumption demand.

公开(公告)号：US20250101911A1

公开(公告)日：2025-03-27

申请号：US18972209

申请日：2024-12-06

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Bugra H. Ertas ,  Xiaohua Zhang ,  Miriam Manzoni ,  Flavia Turi ,  Andrea Piazza ,  Arthur W. Sibbach

IPC: F02C3/30 ,  F02C7/06 ,  F16H57/04

Abstract: A gas turbine engine includes a fan, a combustor positioned in a core air flowpath that generates combustion gases, a steam system that extracts water from the combustion gases and generates steam, and a gearbox assembly. The steam system includes water storage devices that store the water therein. The water storage devices include a first state in which a level of the water increases or is maintained and a second state in which the level of the water decreases as the water flows through the water storage devices. The gearbox assembly includes a gearbox and a gutter for collecting a gearbox lubricant scavenge flow from the gearbox. The gutter is characterized by a lubricant extraction volume ratio between 0.01 and 0.3, inclusive of the endpoints. The lubricant extraction volume ratio defined by: V G V G ⁢ B · V G is a gutter volume of the gutter and VGB is a gearbox volume.

公开(公告)号：US20250035052A1

公开(公告)日：2025-01-30

申请号：US18913330

申请日：2024-10-11

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Bugra H. Ertas ,  Ravindra Shankar Ganiger ,  Andrea Piazza ,  Brandon W. Miller

IPC: F02C7/36

Abstract: A mounting assembly for a gearbox assembly of a gas turbine engine includes at least one mounting member configured to mount a gear of the gearbox assembly to a component of the gas turbine engine, the at least one mounting member characterized by a lateral impedance parameter, a bending impedance parameter, and a torsional impedance parameter. A gas turbine engine includes the mounting assembly. The at least one mounting member may be a flex mount, a fan frame, or a flex coupling. The gas turbine engine also includes a heat exchanger including an inner peripheral wall and an outer peripheral wall extending between an inlet and an outlet. The inner peripheral wall and the outer peripheral wall define a flow channel therebetween. The heat exchanger includes a plurality of fins disposed in the flow channel and dividing the flow channel into a plurality of flow passages.

公开(公告)号：US12203418B2

公开(公告)日：2025-01-21

申请号：US17929105

申请日：2022-09-01

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Bugra H. Ertas ,  Ravindra Shankar Ganiger ,  Andrea Piazza

IPC: F02C7/36 ,  F16H57/025 ,  F16H57/08

Abstract: A mounting assembly for a gearbox assembly of a gas turbine engine includes at least one mounting member configured to mount a gear of the gearbox assembly to a component of the gas turbine engine, the at least one mounting member characterized by a lateral impedance parameter, a bending impedance parameter, and a torsional impedance parameter. A gas turbine engine includes the mounting assembly. The at least one mounting member may be a flex mount, a fan frame, or a flex coupling.

公开(公告)号：US20240280170A1

公开(公告)日：2024-08-22

申请号：US18477960

申请日：2023-09-29

Applicant: GE Avio S.r.l.

Inventor： Michele Gravina ,  Miriam Manzoni ,  Federico Leonardi ,  Andrea Piazza

IPC: F16H57/04

CPC classification number: F16H57/0471 ,  F16H57/0424 ,  F16H57/0428 ,  F16H57/0443 ,  F02C7/36

Abstract: A gearbox assembly includes a plurality of planet gears secured by a planet carrier. The plurality of planet gears and the planet carrier rotate about a longitudinal centerline axis. A planet pin is disposed in each planet gear. One or more journal bearings are defined by the planet pin and the planet gear, each planet gear rotating about the one or more journal bearings. The gearbox assembly includes an auxiliary lubrication system that stores lubricant therein. The auxiliary lubrication system includes one or more lubricant lines that provide fluid communication between the auxiliary lubrication system and the one or more journal bearings. Rotation of the planet carrier and the one or more journal bearings generates a suction effect that causes the lubricant in the auxiliary lubrication system to flow to the one or more journal bearings during windmilling conditions and during zero gravity conditions or negative gravity conditions.

公开(公告)号：US12049849B2

公开(公告)日：2024-07-30

申请号：US18209689

申请日：2023-06-14

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Andrea Piazza ,  Jeffrey D. Clements

IPC: F02C7/36 ,  F02C3/067 ,  F02K3/06

CPC classification number: F02C7/36 ,  F02C3/067 ,  F02K3/06 ,  F05D2200/13 ,  F05D2200/14 ,  F05D2200/221 ,  F05D2260/40311 ,  F05D2260/98

Abstract: A turbomachine engine can include a fan assembly, a vane assembly, a core engine, a gearbox, and an overall engine efficiency rating. The fan assembly can include a plurality of fan blades. The vane assembly can include a plurality of vanes, and the vanes can, in some instances, be disposed aft of the fan blades. The core engine can include a low-pressure turbine. The gearbox includes an input and an output. The input of the gearbox is coupled to the low-pressure turbine of the core engine and comprises a first rotational speed, the output of the gearbox is coupled to the fan assembly and has a second rotational speed, and a gear ratio of the first rotational speed to the second rotational speed is within a range of 2.0-4.0. The overall engine efficiency rating is greater than or equal to 0.35GR1.5 and less than or equal to 0.7GR1.5.

公开(公告)号：US12007011B2

公开(公告)日：2024-06-11

申请号：US18165590

申请日：2023-02-07

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Andrea Piazza ,  Ravindra Shankar Ganiger

IPC: F16H55/08 ,  F16H57/02

CPC classification number: F16H55/088 ,  F16H57/02 ,  F16H2057/02039

Abstract: A gearbox assembly includes a first gear and a second gear. The first gear includes a plurality of first gear teeth. The second gear includes a plurality of second gear teeth. The plurality of first gear teeth and the plurality of second gear teeth mesh with each other as the first gear and the second gear rotate. A profile shape of at least one first gear tooth of the first gear is characterized by a total profile modification between 66 micrometers and 120 micrometers.

公开(公告)号：US11835127B1

公开(公告)日：2023-12-05

申请号：US17816164

申请日：2022-07-29

Applicant: General Electric Company ,  GE Avio S.r.l. ,  GE Aviation Czech s.r.o.

Inventor： Leonardo Coviello ,  Bugra H. Ertas ,  Eric R. Westervelt ,  Andrea Piazza ,  Juraj Hrubec

IPC: F16H57/08 ,  F02C7/36 ,  F16H57/01

CPC classification number: F16H57/08 ,  F02C7/36 ,  F05D2260/40311 ,  F16H57/01 ,  F16H2057/085

Abstract: A gearbox assembly includes a gear assembly that includes a planet gear, a pin disposed within the planet gear, a first sensor, and a second sensor. The first sensor is disposed within the pin and is configured to produce a signal indicative of a strain of the pin. The second sensor is disposed within the pin and is configured to produce a signal indicative of a vibration of the pin. Another gearbox assembly includes a gear assembly including a planet gear, a pin disposed within the planet gear, and a strain sensor. The strain sensor is disposed within the pin and is configured to produce a signal indicative of a strain of the pin. The strain sensor is located within the pin at a circumferential location of the pin that is opposite to a location of a force acting on the pin when the planet gear rotates about the pin.

公开(公告)号：US20230340911A1

公开(公告)日：2023-10-26

申请号：US17929105

申请日：2022-09-01

Applicant: General Electric Company ,  GE Avio S.r.l.

Inventor： Bugra H. Ertas ,  Ravindra Shankar Ganiger ,  Andrea Piazza

IPC: F02C7/36 ,  F16H57/08 ,  F16H57/025

CPC classification number: F02C7/36 ,  F16H57/08 ,  F16H57/025

Abstract: A mounting assembly for a gearbox assembly of a gas turbine engine includes at least one mounting member configured to mount a gear of the gearbox assembly to a component of the gas turbine engine, the at least one mounting member characterized by a lateral impedance parameter, a bending impedance parameter, and a torsional impedance parameter. A gas turbine engine includes the mounting assembly. The at least one mounting member may be a flex mount, a fan frame, or a flex coupling.

公开(公告)号：US20230203993A1

公开(公告)日：2023-06-29

申请号：US18167751

申请日：2023-02-10

Applicant: GE Avio S.r.l.

Inventor： Pietro Molesini ,  Andrea Piazza ,  Fabio De Bellis

IPC: F02C7/36 ,  F01D25/18

CPC classification number: F02C7/36 ,  F01D25/18 ,  F05D2220/32 ,  F05D2260/40311 ,  F05D2260/98

Abstract: A turbomachine engine can include a fan assembly, a vane assembly, a core engine, a gearbox, and a gearbox efficiency rating. The fan assembly can include a plurality of fan blades. The vane assembly can include a plurality of vanes, and the vanes can, in some instances, be disposed aft of the fan blades. The core engine can include one or more compressor sections and one or more turbine sections. The gearbox includes an input and an output. The input is coupled to the one or more turbine sections of the core engine and comprises a first rotational speed, the output is coupled to the fan assembly and has a second rotational speed, and a gear ratio of the first rotational speed to the second rotational speed is within a range of 4.1-14.0. The gearbox efficiency rating is 0.10-1.8.