Surge recovery system and methods

    公开(公告)号:US12000345B2

    公开(公告)日:2024-06-04

    申请号:US17867507

    申请日:2022-07-18

    CPC classification number: F02C9/16 F02C7/32 F05D2270/101 F05D2270/62

    Abstract: A surge control system includes a rotor system with at least one compressor section and at least one turbine section operably coupled to a shaft. The surge control system also includes sensors configured to collect sensor data from the rotor system, an electric motor operably coupled to the rotor system, and a controller. The controller is operable to detect surge event from the sensor data, determine an amount of power to apply to the rotor system, and increase the amount of power provided to the rotor system to recover from the surge event.

    Surge recovery systems and methods

    公开(公告)号:US11448138B2

    公开(公告)日:2022-09-20

    申请号:US16783731

    申请日:2020-02-06

    Abstract: A surge control system includes a rotor system with at least one compressor section and at least one turbine section operably coupled to a shaft. The surge control system also includes sensors configured to collect sensor data from the rotor system, an electric motor operably coupled to the rotor system, and a controller. The controller is operable to detect surge event from the sensor data, determine an amount of power to apply to the rotor system, and increase the amount of power provided to the rotor system to recover from the surge event.

    GAS TURBINE ENGINE AND METHOD FOR OPERATING SAME

    公开(公告)号:US20220120215A1

    公开(公告)日:2022-04-21

    申请号:US17567592

    申请日:2022-01-03

    Inventor: Gary Collopy

    Abstract: A gas turbine engine includes a low-pressure spool, a high-pressure spool, and an electric motor. The low-pressure spool includes a low-pressure compressor in rotational communication with a low-pressure turbine and a fan via a first shaft. The high-pressure spool includes a high-pressure compressor in rotational communication with a high-pressure turbine via a second shaft. The electric motor is operably connected to the second shaft. The electric motor is configured to apply a rotational force to the second shaft.

    Gas turbine engine with idle thrust ratio

    公开(公告)号:US11814968B2

    公开(公告)日:2023-11-14

    申请号:US17379202

    申请日:2021-07-19

    CPC classification number: F01D15/12 F02C3/00 F02C7/32 F05D2220/323

    Abstract: A gas turbine engine according to an example of the present disclosure may include, among other things, a fan section including a fan having a plurality of fan blades and including an outer housing surrounding the fan blades to establish a bypass duct, a geared architecture, a first spool including a first shaft that interconnects a first compressor and a fan drive turbine, the fan drive turbine driving the fan through the geared architecture. The gas turbine engine is rated to provide an amount of thrust at ground idle, and the gas turbine engine is rated to provide an amount of thrust at maximum takeoff. A thrust ratio is defined as a ratio of the amount of thrust at ground idle divided by the amount of thrust at maximum takeoff. The thrust ratio can be less than or equal to 0.050.

    HYBRID ELECTRIC SINGLE ENGINE DESCENT RESTART

    公开(公告)号:US20230138476A1

    公开(公告)日:2023-05-04

    申请号:US17586326

    申请日:2022-01-27

    Abstract: Examples described herein provide a computer-implemented method that includes controlling a high spool motor of an aircraft to cause the high spool motor to drive rotation of a high speed spool of a gas turbine engine of the aircraft to maintain a desired compressor pressure and a desired flow within a combustor of the gas turbine engine. The method further includes commanding fuel flow to the combustor responsive to a trigger event to cause the gas turbine engine to start to a fuel-burning mode.

    GAS TURBINE ENGINE WITH IDLE THRUST RATIO

    公开(公告)号:US20230028552A1

    公开(公告)日:2023-01-26

    申请号:US17379202

    申请日:2021-07-19

    Abstract: A gas turbine engine according to an example of the present disclosure may include, among other things, a fan section including a fan having a plurality of fan blades and including an outer housing surrounding the fan blades to establish a bypass duct, a geared architecture, a first spool including a first shaft that interconnects a first compressor and a fan drive turbine, the fan drive turbine driving the fan through the geared architecture. The gas turbine engine is rated to provide an amount of thrust at ground idle, and the gas turbine engine is rated to provide an amount of thrust at maximum takeoff. A thrust ratio is defined as a ratio of the amount of thrust at ground idle divided by the amount of thrust at maximum takeoff. The thrust ratio can be less than or equal to 0.050.

    Aircraft engine power-assist start stability control

    公开(公告)号:US11557995B2

    公开(公告)日:2023-01-17

    申请号:US16991077

    申请日:2020-08-12

    Inventor: Gary Collopy

    Abstract: A hybrid electric propulsion system includes a gas turbine engine having a low speed spool and a high speed spool. The low speed spool includes a low pressure compressor and a low pressure turbine, and the high speed spool includes a high pressure compressor and a high pressure turbine. The hybrid electric propulsion system also includes an energy storage system, an electric motor configured to augment rotational power of the high speed spool, and a controller. The controller is operable to detect a start condition of the gas turbine engine, control power delivery from the energy storage system to the electric motor based on detecting the start condition, and provide a compressor stall margin using a power-assist provided by the electric motor to the high speed spool over a targeted speed range during starting of the gas turbine engine.

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