公开(公告)号：US10914234B1

公开(公告)日：2021-02-09

申请号：US16549759

申请日：2019-08-23

Applicant: United Technologies Corporation

Inventor： Steven M. O'Flarity ,  Neil Terwilliger

IPC: F02C6/14 ,  H02K7/18 ,  H02K7/116 ,  H02K11/00

Abstract: A gas turbine engine includes a compressor. A turbine is mechanically connected to the compressor by a shaft. An air-driven auxiliary turbine is in fluid communication with the compressor and is configured to receive pressurized air from the compressor. An auxiliary generator is operably connected to the auxiliary turbine. The auxiliary generator is configured to generate electrical energy in response to an operation of the auxiliary turbine. An energy storage device is in electrical communication with the auxiliary generator.

公开(公告)号：US20210017878A1

公开(公告)日：2021-01-21

申请号：US16511276

申请日：2019-07-15

Applicant: United Technologies Corporation

Inventor： David A. Golfin ,  Neil Terwilliger

IPC: F01D15/10 ,  F01D17/08 ,  F01D15/12 ,  F01D13/02 ,  F02C3/113

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 turbine, and the high speed spool includes a high pressure compressor and turbine. The hybrid electric propulsion system includes an electric generator configured to extract power from the low speed spool, an electric motor configured to augment rotational power of the high speed spool, and a controller. The controller is operable to determine a target operating condition of the low pressure compressor to achieve a compressor stability margin in the gas turbine engine, determine a current operating condition of the low pressure compressor, and control a power transfer between the electric generator of the low speed spool and the electric motor of the high speed spool to adjust the current operating condition based on the target operating condition.

公开(公告)号：US20200056549A1

公开(公告)日：2020-02-20

申请号：US16104579

申请日：2018-08-17

Applicant: United Technologies Corporation

Inventor： Neil Terwilliger ,  John P. Virtue

IPC: F02C9/18 ,  F02C6/14 ,  F02C7/275

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.

公开(公告)号：US20200056546A1

公开(公告)日：2020-02-20

申请号：US16104281

申请日：2018-08-17

Applicant: United Technologies Corporation

Inventor： Neil Terwilliger ,  John P. Virtue

IPC: F02C7/268 ,  B64D27/10 ,  B64D27/24 ,  B64D31/06 ,  B64D33/00 ,  F02C9/26

Abstract: An aspect includes a hybrid gas turbine engine system of a hybrid electric aircraft. The hybrid gas turbine engine system includes a gas turbine engine, an electric motor operable to perform an electric taxiing of the hybrid electric aircraft, and a controller. The controller is operable to prevent fuel flow to the gas turbine engine during at least a portion of the electric taxiing and monitor for a powered warm-up request during the electric taxiing. A powered warm-up state of the gas turbine engine is initiated based on detecting the powered warm-up request. The powered warm-up state adds heat to one or more components of the gas turbine engine prior to transitioning to a takeoff power state. The gas turbine engine transitions from the powered warm-up state to the takeoff power state after reaching a target temperature of the one or more components in the powered warm-up state.

公开(公告)号：US20190341659A1

公开(公告)日：2019-11-07

申请号：US15971295

申请日：2018-05-04

Applicant: United Technologies Corporation

Inventor： Neil Terwilliger

IPC: H01M10/44 ,  H01M10/613 ,  H01M10/625 ,  H01M10/656

Abstract: A method of recharging an energy storage system for a vehicle, the energy storage system operable in a charging mode and a discharging mode includes balancing a discharging mode waste power and a discharging mode removal power to independently maintain the energy storage system near a discharging design temperature during the discharging mode; receiving an off-board cooling flow into an on-board cooling architecture of the energy storage system during charging mode, wherein the on-board cooling architecture comprises a network of on-board passages proximate to at least portions of the energy storage system; and distributing the off-board cooling flow to maintain the energy storage system near a peak charging design temperature through a balance of a charging mode waste power and a charging mode removal power.