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公开(公告)号：US20250137529A1
公开(公告)日：2025-05-01
申请号：US19003582
申请日：2024-12-27
Applicant: General Electric Company , GE Avio S.r.l.
Inventor： Bugra H. Ertas , Xiaohua Zhang , Miriam Manzoni , Flavia Turi , Andrea Piazza , Arthur W. Sibbach
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. The lubricant extraction volume ratio defined by: V G V GB . V G is a gutter volume of the gutter and VGB is a gearbox volume. The gas turbine engine includes a lubrication system that includes a lubricant tank that stores lubricant, one or more primary gearbox lubricant supply lines, one or more secondary gearbox lubricant supply lines, and a lubricant pump for supplying the lubricant to the gearbox assembly through the primary gearbox lubricant supply lines and the secondary gearbox lubricant supply lines. The lubrication system modulates a mass flow rate of the lubricant to the gearbox assembly through the primary gearbox lubricant supply lines or the secondary gearbox lubricant supply lines.
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公开(公告)号：US20240125279A1
公开(公告)日：2024-04-18
申请号：US18393440
申请日：2023-12-21
Applicant: GE Aviation Czech s.r.o , GE Avio S.r.l.
Inventor： Giuseppe Cervelli , Simone Castellani , Miriam Manzoni , Giuseppe Bellocchio , Vojtech Jirasek
CPC classification number: F02D29/02 , B64C11/385 , B64C11/40 , B63H3/10
Abstract: A variable pitch propeller assembly operatively coupled with an engine and methods for controlling the pitch of a plurality of propeller blades thereof is provided. In one example aspect, the variable pitch propeller assembly includes features for combining overspeed, feathering, and reverse functionality in a single secondary control valve. The secondary control valve is operable to selectively allow a controlled amount of hydraulic fluid to flow to or from a pitch actuation assembly such that the pitch of the propeller blades can be adjusted to operate the variable pitch propeller assembly in one of a constant speed mode, a feather mode, and a reverse mode.
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公开(公告)号：US11873771B2
公开(公告)日：2024-01-16
申请号：US18061852
申请日：2022-12-05
Applicant: GE Aviation Czech s.r.o. , GE Avio S.r.l.
Inventor： Giuseppe Cervelli , Simone Castellani , Miriam Manzoni , Giuseppe Bellocchio , Vojtech Jirasek
CPC classification number: F02D29/02 , B64C11/385 , B64C11/40 , B63H3/10 , F02B61/045
Abstract: A variable pitch propeller assembly operatively coupled with an engine and methods for controlling the pitch of a plurality of propeller blades thereof is provided. In one example aspect, the variable pitch propeller assembly includes features for combining overspeed, feathering, and reverse functionality in a single secondary control valve. The secondary control valve is operable to selectively allow a controlled amount of hydraulic fluid to flow to or from a pitch actuation assembly such that the pitch of the propeller blades can be adjusted to operate the variable pitch propeller assembly in one of a constant speed mode, a feather mode, and a reverse mode.
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公开(公告)号：US11306812B2
公开(公告)日：2022-04-19
申请号：US16585041
申请日：2019-09-27
Applicant: GE Avio S.r.l.
Inventor： Miriam Manzoni , Davide Lercara , Andrea Piazza
Abstract: A gear assembly of an aircraft including an engine is generally provided. The gear assembly includes a first gear meshed with a second gear to define a gear mesh, and a walled lubricant tank defining a lubricant reservoir and a reservoir inlet opening. The reservoir inlet opening is defined adjacent to an out-of-mesh side of the gear mesh. At least a portion of lubricant from the gear mesh enters the lubricant reservoir through the reservoir inlet opening.
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公开(公告)号：US20250122848A1
公开(公告)日：2025-04-17
申请号：US18990594
申请日：2024-12-20
Applicant: General Electric Company , GE Avio S.r.l.
Inventor： Bugra H. Ertas , Xiaohua Zhang , Miriam Manzoni , Flavia Turi , Andrea Piazza , Arthur W. Sibbach
Abstract: A 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 that is defined by V G V G B . VG is a gutter volume of the gutter and VGB is a gearbox volume. A gas turbine engine includes the gearbox assembly, a fan, a combustor that generates combustion gases, a turbine, a nacelle that surrounds the fan, and a steam system. The combustor and the turbine define a core air flowpath. Core air flows through the core air flowpath. The steam system that extracts water from the combustion gases, vaporizes the water to generate steam, and injects the steam into the core air flowpath to add mass flow to the core air. A bypass ratio of the gas turbine engine is in a range of 18:1 to 100:1.
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Patent Agency Ranking
公开(公告)号：US20250122835A1
公开(公告)日：2025-04-17
申请号：US18990685
申请日：2024-12-20
Applicant: General Electric Company , GE Avio S.r.l.
Inventor： Bugra H. Ertas , Xiaohua Zhang , Miriam Manzoni , Flavia Turi , Andrea Piazza , Arthur W. Sibbach
Abstract: A 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 is defined by V G V GB . VG is a gutter volume of the gutter and VGB is a gearbox volume of the gearbox. A gas turbine engine includes the gearbox assembly and a lubrication system. The lubrication system includes a tank that stores a lubricant therein, one or more lubricant pumps for generating a flow of lubricant from the tank to the gearbox assembly, and a flow rate control valve. The flow rate control valve has a flow inlet and a flow outlet and defines a variable throughput from the flow inlet to the flow outlet for controlling a flowrate of the lubricant to the gearbox assembly.
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公开(公告)号：US12098674B2
公开(公告)日：2024-09-24
申请号：US18497207
申请日：2023-10-30
Applicant: GE Avio S.r.l.
Inventor： Nicolò Balbo , Miriam Manzoni , Gianni Bardone
CPC classification number: F02C7/06 , F16N7/40 , F16N25/00 , F05D2260/98 , F16N2210/02 , F16N2270/70 , F16N2280/04
Abstract: An oil delivery system includes a first oil delivery circuit having a first oil distribution line delivering oil to at least one first circuit component part, a first oil pump, and a first switch valve, and a second oil delivery circuit having a second oil distribution line delivering oil to at least one second circuit component part, a second oil pump, and a second switch valve. The first switch valve controls a flow of oil through the first oil delivery circuit based on a difference between a first oil pressure of the first oil delivery circuit and a second oil pressure of the second oil delivery circuit. The second switch valve controls a flow of oil through the second oil delivery circuit based on a difference between the second oil pressure of the second oil delivery circuit and the first oil pressure of the first oil delivery circuit.
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公开(公告)号：US20240229716A1
公开(公告)日：2024-07-11
申请号：US18497207
申请日：2023-10-30
Applicant: GE Avio S.r.l.
Inventor： Nicolò Balbo , Miriam Manzoni , Gianni Bardone
CPC classification number: F02C7/06 , F16N7/40 , F16N25/00 , F05D2260/98 , F16N2210/02 , F16N2270/70 , F16N2280/04
Abstract: An oil delivery system includes a first oil delivery circuit having a first oil distribution line delivering oil to at least one first circuit component part, a first oil pump, and a first switch valve, and a second oil delivery circuit having a second oil distribution line delivering oil to at least one second circuit component part, a second oil pump, and a second switch valve. The first switch valve controls a flow of oil through the first oil delivery circuit based on a difference between a first oil pressure of the first oil delivery circuit and a second oil pressure of the second oil delivery circuit. The second switch valve controls a flow of oil through the second oil delivery circuit based on a difference between the second oil pressure of the second oil delivery circuit and the first oil pressure of the first oil delivery circuit.
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公开(公告)号：US20250122842A1
公开(公告)日：2025-04-17
申请号：US18990617
申请日：2024-12-20
Applicant: General Electric Company , GE Avio S.r.l.
Inventor： Bugra H. Ertas , Xiaohua Zhang , Miriam Manzoni , Flavia Turi , Andrea Piazza , Arthur W. Sibbach
Abstract: A 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: VG/VGB. VG is a gutter volume of the gutter and VGB is a gearbox volume. A gas turbine engine includes the gearbox assembly. The gas turbine engine includes an electric power system including at least one electric machine. The electric power system includes a plurality of power converters and a plurality of power distribution management units. At least two of the plurality of power converters or the plurality of power distribution management units are integrated together in a single housing.
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公开(公告)号：US20250122836A1
公开(公告)日：2025-04-17
申请号：US18990706
申请日：2024-12-20
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
Abstract: A 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, and given by V G V G B . VG is a gutter volume of the gutter and VGB is a gearbox volume. A gas turbine engine includes a combustion section and the gearbox assembly. A fuel delivery system includes a fuel supply line for delivering fuel to the combustion section. A lubrication system includes a lubricant supply line for delivering lubricant to the gearbox assembly. A thermal management system includes a fuel-lubricant heat exchanger for cooling the lubricant with the fuel. The thermal management system selectively directs the fuel through fuel bypass lines or the lubricant through lubricant bypass lines to bypass the fuel-lubricant heat exchanger based on a fuel temperature or a lubricant temperature.
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