US4248040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated control system for a gas turbine engine
Assignee: General Electric Co
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Filing: 1979-06-04
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Granted: 1981-02-03
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Expires: 1999-06-04
Abstract
Abstract An improved integrated control system for a gas turbine engine includes fuel control means for metering the flow of fuel to the engine in accordance with a fuel control position signal. A primary control means generates a primary fuel control position signal. A back-up control means generates a back-up fuel control position signal as a function of the actual engine speed in a primary mode and as a function of the power lever angle in a back-up mode. Transfer means is included to receive both the primary and back-up fuel control position signals and to provide only the primary signal to the fuel control means when the system in the primary mode and to provide only the back-up signal to the fuel control means when the system is in the back-up mode.
Inventors
- 👤 Howard B. Kast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:23
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
An improved integrated control system for a gas turbine engine which includes: fuel control means for metering the flow of fuel to the engine in accordance with a received fuel control position signal; and primary control means for generating a primary fuel control position signal; wherein the improvement comprises: back-up control means for generating a back-up fuel control position signal, said back-up fuel control position signal being generated as a function of the actual engine rotational speed when the control system is operating in a primary mode and as a function of the power lever angle when the control system is operating in a back-up mode; and transfer means for receiving said primary fuel control position signal and said back-up fuel control position signal and for providing said primary fuel control position signal to said fuel control means when the control system is operating in a primary mode and said back-up fuel control position signal to said fuel control means when the control system is operating in a back-up mode.
Claim 2
Dependent Claim
170 words
An improved integrated control system for a gas turbine engine which includes: fuel control means for metering the flow of fuel to the engine in accordance with a received fuel control position signal; and primary control means for generating a primary fuel control position signal; wherein the improvement comprises: back-up control means for generating a back-up fuel control position signal, said back-up fuel control position signal being generated as a function of the actual engine rotational speed when the control system is operating in a primary mode and as a function of the power lever angle when the control system is operating in a back-up mode; and transfer means for receiving said primary fuel control position signal and said back-up fuel control position signal and for providing said primary fuel control position signal to said fuel control means when the control system is operating in a primary mode and said back-up fuel control position signal to said fuel control means when the control system is operating in a back-up mode.
Claim 3
Dependent Claim
131 words
The control system as set forth in claim 1 and further including variable geometry control means for controlling the position of a variable component of the engine in accordance with a received geometry control position signal wherein: said primary control means generates a primary geometry control position signal; said back-up control means generates a back-up geometry control position signal, as a function of the actual engine rotational speed and compressor inlet temperature; and said transfer means receives said primary geometry control position signal and said back-up geometry control position signal and provides said variable geometry control means with said primary geometry control position signal when the control system is operating in a primary mode and said back-up geometry control position signal when the control system is operating in a back-up mode.
Claim 4
Dependent Claim
33 words
The control system as set forth in claim 1 and further including means for effectuating a transfer from the primary mode to the back-up mode in the event an engine overspeed condition occurs.
Claim 5
Dependent Claim
36 words
The control system as set forth in claim 1 and further including means for effectuating a transfer from the primary mode to the back-up mode in the event that the primary control means looses primary power.
Claim 6
Dependent Claim
38 words
The control system as set forth in claim 1 and further including means for effectuating a transfer from the primary mode to the back-up mode in the event of faulty or abnormal operation of the primary control means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |