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公开(公告)号：US20250035046A1
公开(公告)日：2025-01-30
申请号：US18361075
申请日：2023-07-28
Inventor： Jeffrey Lawrence , Peter Schenk , Jacob Ward Harral , Brian Joseph Huber
Abstract: An example system includes a first gas-turbine engine configured to propel an aircraft, the first gas-turbine engine comprising: a first air-turbine starter, the first air-turbine starter configured to rotate a spool of the first gas-turbine engine; and a first electric starter, the first electric starter configured to rotate the spool of the first gas-turbine engine; and one or more controllers collectively configured to: cause, during a time period, the first-air turbine starter and the first electric starter to start the first gas-turbine engine while the aircraft is on the ground; measure, during the time period, values of one or more parameters of the first gas-turbine engine; and determine, based on the values of the one or more parameters, whether the first electric starter is available for use in performing mid-air restart of the first gas-turbine engine.
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2.发明公开公开(公告)号：US20230323788A1
公开(公告)日：2023-10-12
申请号：US18252278
申请日：2021-11-12
Applicant: SAFRAN HELICOPTER ENGINES
Inventor： Loïs Pierre Denis VIVE , Olivier BEDRINE , Thomas DROUIN
CPC classification number: F01D15/10 , F02C7/32 , F02C7/275 , F05D2220/76 , F05D2260/85
Abstract: A turbomachine, particularly for a rotary-wing aircraft, including a gas generator provided with a rotary shaft, a first reversible electric machine, a power turbine rotationally driven by a stream of gas generated by the gas generator, at least one accessory from among an oil pump and a fuel pump, an accessory gearbox comprising a gear train configured to drive said at least one accessory, and a second electric machine.
The second electric machine is reversible, said first electric machine is mechanically coupled to the gas generator, the accessory gearbox and the second electric machine are mechanically coupled to the power turbine, and the turbomachine is devoid of any kinematic coupling between the gear train of the accessory gearbox and the shaft of the gas generator.-
公开(公告)号：US20220371532A1
公开(公告)日：2022-11-24
申请号：US17325404
申请日：2021-05-20
Inventor： Kum Kang Huh , Mohamed Osama
Abstract: An AC electrical system for a vehicle and methods of operating the same are provided. In one aspect, an AC electrical system includes a first electric machine mechanically coupled with a first spool of a gas turbine engine and a second electric machine mechanically coupled with a second spool of the gas turbine engine. The system also includes a first AC bus and a second AC bus. A first electrical channel electrically couples the first electric machine to the first AC bus and a second electrical channel electrically couples the second electric machine to the second AC bus. The system also includes one or more connection links and one or more power converters for selectively electrically coupling the first and second electrical channels so that electrical power generated by one electric machine can be converted and shared with the other electric machine and electrical loads of the other channel.
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公开(公告)号：US11459946B2
公开(公告)日：2022-10-04
申请号：US16536526
申请日：2019-08-09
Applicant: United Technologies Corporation
Inventor： Matthew R. Feulner , Gary Collopy
Abstract: A system includes a gas turbine engine having a low speed spool and a high speed spool. The system also includes a spool coupling system configured to mechanically link the low speed spool and the high speed spool. A controller is operable to determine a mode of operation of the gas turbine engine, monitor for a spool coupling activation condition associated with the mode of operation, and activate the spool coupling system based on the controller detecting the spool coupling activation condition. Engagement and power transfer between the low speed spool and the high speed spool occurs based on activation of the spool coupling system and reaching an engagement condition of the spool coupling system.
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公开(公告)号：US11384694B2
公开(公告)日：2022-07-12
申请号：US17279138
申请日：2019-09-27
Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
Inventor： Yoshiyasu Shibayama , Tatsuya Okuwa , Yoshiaki Yuda
Abstract: An auxiliary device system includes a motor generator, an auxiliary device motor, a converter configured to convert electric power generated by the motor generator, an inverter configured to drive the motor generator and the auxiliary device motor, a switch configured to be switched between a motor generator control state in which the inverter controls the motor generator and an auxiliary device motor control state in which the inverter controls the auxiliary device motor, and a controller configured to control the switch. When a condition in which a motor generator drive command is generated is satisfied, the controller sets the switch to the motor generator control state. When the condition is not satisfied, the controller sets the switch to the auxiliary device motor control state.
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Patent Agency Ranking
公开(公告)号：US11313418B2
公开(公告)日：2022-04-26
申请号：US16671706
申请日：2019-11-01
Applicant: Hamilton Sundstrand Corporation
Inventor： Matthew Allen Slayter , Richard Alan Davis , Benjamin T. Harder , James Vandung Nguyen , Paul F. Fox , Jeffrey Todd Roberts , Jeff A. Brown , Brian McMasters , Dwayne Leon Wilson , Daniel Richard Walker
Abstract: A method of manufacturing a motoring system for a gas turbine engine including the steps of: forming a mechanical shaft fuse, the mechanical shaft fuse including a plurality of through holes; forming an outer housing; installing a reduction gear train into the outer housing, the reduction gear train having an input and an output; operably connecting an electric motor to the input; operably connecting a clutch to the output using the mechanical shaft fuse, the clutch in operation engages and disengages the reduction gear train; operably connecting a starter to the clutch, the starter having an output shaft; and operably connecting an accessory gearbox to the output shaft of the starter. The mechanical shaft fuse in operation shears when torque on the mechanical is greater than or equal to a selected value.
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公开(公告)号：US20210396183A1
公开(公告)日：2021-12-23
申请号：US17279138
申请日：2019-09-27
Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
Inventor： Yoshiyasu SHIBAYAMA , Tatsuya OKUWA , Yoshiaki YUDA
Abstract: An auxiliary device system includes a motor generator, an auxiliary device motor, a converter configured to convert electric power generated by the motor generator, an inverter configured to drive the motor generator and the auxiliary device motor, a switch configured to be switched between a motor generator control state in which the inverter controls the motor generator and an auxiliary device motor control state in which the inverter controls the auxiliary device motor, and a controller configured to control the switch. When a condition in which a motor generator drive command is generated is satisfied, the controller sets the switch to the motor generator control state. When the condition is not satisfied, the controller sets the switch to the auxiliary device motor control state.
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公开(公告)号：US11181045B2
公开(公告)日：2021-11-23
申请号：US16328009
申请日：2017-08-30
Applicant: Mitsubishi Hitachi Power Systems, Ltd.
Inventor： Naoyuki Nagafuchi , Toshimitsu Morimoto , Kazuo Takahashi , Hironori Tsukidate
Abstract: Provided is a two-shaft gas turbine power generation equipment that includes: an induction motor which receives/transmits power from/to a power system; and a speed reducer that makes a rotational speed of a motor rotor of the induction motor lower than a rotational speed of a compressor rotor of a two-shaft gas turbine. The speed reducer includes: a compressor-side shaft; a motor-side shaft; a first compressor-side helical gear and a second compressor-side helical gear which are mounted on the compressor-side shaft; and a first motor-side helical gear and a second motor-side helical gear which are mounted on the motor-side shaft. The first compressor-side helical gear meshes with the first motor-side helical gear, and the second compressor-side helical gear meshes with the second motor-side helical gear.
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公开(公告)号：US11168617B2
公开(公告)日：2021-11-09
申请号：US16261688
申请日：2019-01-30
Applicant: Raytheon Technologies Corporation
Inventor： Daniel Bernard Kupratis , Coy Bruce Wood
Abstract: A turbofan engine includes a first spool including a first turbine, and a first tower shaft engaged to the first spool. A second spool includes a second turbine, and a second tower shaft is engaged to the second spool. A superposition gearbox includes a sun gear, a plurality of intermediate gears engaged to the sun gear, and is supported in a carrier and a ring gear circumscribing the intermediate gears. The first tower shaft or the second tower shaft drives one of the intermediate gears. A drive motor is engaged to drive the sun gear, an inner electric motor, a stator disposed radially outside of the inner electric motor, and an outer electric motor disposed radially outside the stator. A first load on the first spool and a second load on the second spool is adjusted by operation of at least one of the inner electric motor and the outer electric motor.
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公开(公告)号：US10995674B2
公开(公告)日：2021-05-04
申请号：US16104579
申请日：2018-08-17
Applicant: United Technologies Corporation
Inventor： Neil Terwilliger , John P. Virtue
Abstract: An embodiment of an engine assembly includes a plurality of offtakes powered by a combustion turbine engine having a high spool and at least one lower spool, and a controller configured to operate the combustion turbine engine through a range between a first low-idle mode, a second high idle mode, and a maximum takeoff power rating mode. The controller operates the engine in the low-idle mode by directing at least a first portion of power from the at least one lower spool to the plurality of offtakes, and wherein the controller operates the engine in the high idle mode by increasing a speed of the high spool relative to a speed of the high spool in the low-idle mode, thereby increasing a compressor outlet (T3) temperature in the high idle mode relative to a T3 temperature in the low-idle mode.
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