Invention Grant
- Patent Title: Methods and apparatus for controlling at least a part of a start-up or re-light process of a gas turbine engine
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Application No.: US16269814Application Date: 2019-02-07
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Publication No.: US11041441B2Publication Date: 2021-06-22
- Inventor: Stephen M. Husband , Ahmed My Razak
- Applicant: ROLLS-ROYCE plc
- Applicant Address: GB London
- Assignee: ROLLS-ROYCE plc
- Current Assignee: ROLLS-ROYCE plc
- Current Assignee Address: GB London
- Agency: Barnes & Thornburg LLP
- Priority: GB1803038 20180226
- Main IPC: F02C7/26
- IPC: F02C7/26 ; F01D19/00 ; F02C7/275 ; F02C7/262 ; F02C9/20
Abstract:
A method of controlling at least a part of a start-up or re-light process of a gas turbine engine, the method comprising: controlling rotation of a low pressure compressor using a first electrical machine to increase angular velocity of the low pressure compressor; and controlling rotation of a high pressure compressor using a second electrical machine to restrict angular velocity of the high pressure compressor while the angular velocity of the low pressure compressor is increased.
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