公开(公告)号：US20240191658A1

公开(公告)日：2024-06-13

申请号：US18512999

申请日：2023-11-17

Applicant: Rolls-Royce plc

Inventor： David M. Donnelly ,  Derek S. Wall ,  Jonathan Wieland

IPC: F02C7/12 ,  F01D21/00 ,  F01D21/12

CPC classification number: F02C7/12 ,  F01D21/003 ,  F01D21/12 ,  F05D2260/20

Abstract: A method of operating a gas turbine engine having a spool includes executing, by a controller, a pre-shutdown procedure. The pre-shutdown procedure includes: determining a parameter associated with a thermal condition of the gas turbine engine; and calculating an idle period for an idle rotation operation to be performed in a shutdown procedure. Calculation of the idle period is based on the determined parameter.

公开(公告)号：US12286935B2

公开(公告)日：2025-04-29

申请号：US18176777

申请日：2023-03-01

Applicant: ROLLS-ROYCE plc

Inventor： Derek S. Wall ,  Asad Mustafa ,  Robert Johnson ,  Jonathan Wieland

IPC: F02C9/00

Abstract: Disclosed is a computer-implemented method for controlling an engine system of a vehicle comprising: determining an operating condition of the vehicle; determining one or more contextual conditions relevant to the vehicle; selecting, based upon both the determined operating condition and the determined one or more contextual conditions, a control profile for the engine system from a directory comprising a plurality of control profiles having different control characteristics; applying the selected control profile to a controller of the engine system; and controlling the engine system with the controller in accordance with the selected control profile. Also disclosed are an engine control system, a gas turbine engine, and an aircraft.

公开(公告)号：US12215626B2

公开(公告)日：2025-02-04

申请号：US18488217

申请日：2023-10-17

Applicant: ROLLS-ROYCE plc

Inventor： David M. Donnelly ,  Caroline L. Turner ,  Derek S. Wall ,  Peter F. Douglas

IPC: F02C7/26 ,  F02C6/00 ,  F02C9/28 ,  F01D19/00

Abstract: There is provided a method of starting a gas turbine engine, comprising: selecting a baseline starting procedure of the gas turbine engine based on environmental data; receiving condition information for the gas turbine engine and/or for a starting system of the gas turbine engine, the condition information comprising at least one of: health information for the gas turbine engine and/or the starting system; maintenance information for the gas turbine engine and/or the starting system; and operation information relating to an expected future usage of the gas turbine engine. The method further comprises determining a predicted degradation profile for the gas turbine engine and/or the starting system based on the condition information; determining a starting procedure of the gas turbine engine by adapting the baseline starting procedure based on the predicted degradation profile; and controlling the gas turbine engine and/or the starting system according to the determined starting procedure.

公开(公告)号：US12234775B2

公开(公告)日：2025-02-25

申请号：US18349285

申请日：2023-07-10

Applicant: ROLLS-ROYCE plc

Inventor： David M. Donnelly ,  Derek S. Wall

IPC: F02C7/268 ,  F01D15/10 ,  F01D25/34 ,  F01D25/36 ,  F02C9/00 ,  F01D21/00

Abstract: There is disclosed a gas turbine engine comprising: an electrically-powered motor configured to rotate a driven spool of the gas turbine engine; a primary controller configured to conduct a primary function using the motor; and a bow controller configured to selectively control the motor to perform a rotor bow mitigation operation in which the motor drives the driven spool to rotate to mitigate a non-uniform thermal distribution in a rotor of a spool of the gas turbine engine.

公开(公告)号：US20240191633A1

公开(公告)日：2024-06-13

申请号：US18513073

申请日：2023-11-17

Applicant: ROLLS-ROYCE PLC

Inventor： David M. Donnelly ,  Derek S. Wall ,  Jonathan Wieland

IPC: F01D21/12 ,  F02C7/268

CPC classification number: F01D21/12 ,  F02C7/268 ,  F05D2270/3032

Abstract: A method of operating a gas turbine engine having a spool includes executing, by a controller, a shutdown procedure. The shutdown procedure includes: performing an idle rotation operation; determining a parameter associated with a thermal condition of the gas turbine engine while the idle rotation operation is performed; determining, based on the determined parameter, whether the gas turbine engine has met a pre-determined criterion corresponding to a thermally stabilised condition; and terminating the idle rotation operation in response to a determination that the gas turbine engine has met the pre-determined criterion.