公开(公告)号：US11168618B2

公开(公告)日：2021-11-09

申请号：US16800000

申请日：2020-02-25

Applicant: ROLLS-ROYCE plc

Inventor： Michael Booth ,  Steven P. Culwick

IPC: F02C7/36

Abstract: A shaft apparatus for a gas turbine engine comprising: a first shaft portion; a second shaft portion; and a ratchet mechanism configured to permit the first shaft portion to rotate with respect to the second shaft portion in a first direction, and to prevent the first shaft portion from rotating with respect to the second shaft portion in a second direction opposite to the first direction. A gas turbine engines comprising the shaft apparatus and methods of operating a gas turbine engine are also disclosed.

公开(公告)号：US11293345B2

公开(公告)日：2022-04-05

申请号：US16391592

申请日：2019-04-23

Applicant: ROLLS-ROYCE plc

Inventor： David P. Scothern ,  Steven P. Culwick ,  Shane Perera ,  Edward J. Spalton

IPC: F02C7/00 ,  F02C7/047 ,  F02C9/18 ,  B64D33/02 ,  F01D25/02

Abstract: A gas turbine engine comprising: an engine core comprising a compressor; a compressor bleed valve in communication with the compressor and configured to release bleed air from the compressor; at least one component provided at the inlet of the engine core having a de-icing conduit, configured to receive the bleed air; and a flow controller, configured to provide bleed air to the de-icing conduit of the at least one component in response to either or both of a requirement to de-ice the component and a requirement to release bleed air from the compressor to optimise operation of the core.

公开(公告)号：US11408348B2

公开(公告)日：2022-08-09

申请号：US17186714

申请日：2021-02-26

Applicant: ROLLS-ROYCE plc

Inventor： Steven P. Culwick

IPC: F02C7/228 ,  F02C7/22 ,  F02C7/232 ,  F02C9/26 ,  F23R3/34 ,  F02C9/36

Abstract: A fuel supply system for fuel injectors of a multi-stage combustor of a gas turbine engine is provided. The system has a metering and splitting arrangement which receives a pressurised fuel flow and controllably meters and splits the received flow into metered pilot and mains flows for injecting respectively at pilot and mains fuel discharge orifices of the injectors to perform staging control of the combustor. The system further has pilot and mains fuel distribution pipeworks respectively distributing fuel from the metering and splitting arrangement to the pilot and mains discharge orifices. The system further has a controller which is configured to command the metering and splitting arrangement to provide the metered flows, to select the pilot distribution pipework and deselect the mains distribution pipework for pilot-only operation.