US3174284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power management fuel control for plural gas turbine engines
Assignee: RTX Corp
•
Filing: 1963-02-19
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Granted: 1965-03-23
•
Expires: 1983-02-19
Abstract
No abstract record available.
Inventors
- 👤 Calvin D Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:23
CPC Classifications
F; F02; F02D; F02D25/00; F02D25/02; B; B64; B64C; B64C27/00; B64C27/04; B64C27/12; F02C; F02C9/00; F02C9/26; F02C9/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
A POWER MANAGEMENT CONTROL FOR A PLURALITY OF ENGINES MOUNTED SO AS TO COACT, EACH ENGINE BEING OF THE GAS GENERATOR FREE TURBINE TYPE, ONE OF SAID ENGINES HAVING A FUEL CONTROL AND BEING UTILIZED WITH AT LEAST A SECOND SUCH FREE TURBINE ENGINE TO PROVIDE POWER, COMPRISING: TACHOMETER MEANS FOR SENSING THE SPEED OF THE FREE TURBINE OF THE FIRST OF SAID ENGINES AND FOR GENERATING A SIGNAL COMMENSURATE THEREWITH, MEANS FOR PRODUCING A SIGNAL INDICATIVE OF THE DESIRED SPEED OF THE FREE TURBINE OF THE FIRST ENGINE, MEANS FOR COMPARING SAID SIGNAL COMMENSURATE WITH SPEED WITH SAID DESIRED SPEED SIGNAL TO PROVIDE A SPEED ERROR SIGNAL, MEANS FOR SENSING A QUANTITY INDICATIVE OF THE POWER OUTPUT OF THE GAS GENERATOR OF THE FIRST ENGINE AND FOR GENERATING A FIRST SIGNAL COMMENSURATE THEREWITH, MEANS FOR SENSING A QUANTITY INDICATIVE OF THE POWER OUTPUT OF THE GAS GENERATOR OF THE SECOND ENGINE AND FOR GENERATING A SECOND SIGNAL COMMENSURATE THEREWITH, MEANS FOR COMPARING SAID FIRST AND SECOND POWER OUTPUT SIGNALS FOR PRODUCING A LOAD UNBALANCE SIGNAL, MEANS RESPONSIVE TO SAID SPEED ERROR AND LOAD UNBALANCE SIGNALS FOR PRODUCING A CONTROL SIGNAL, AND FUEL CONTROL OPERATING MEANS RESPONSIVE TO SAID CONTROL SIGNAL AND OPERATIVELY CONNECTED TO THE FUEL CONTROL ON THE FIRST ENGINE FOR CAUSING ADJUSTMENT OF THE FUEL FLOW TO THE FIRST ENGINE.
Claim 2
Dependent Claim
223 words
A POWER MANAGEMENT CONTROL FOR A PLURALITY OF ENGINES MOUNTED SO AS TO COACT, EACH ENGINE BEING OF THE GAS GENERATOR FREE TURBINE TYPE, ONE OF SAID ENGINES HAVING A FUEL CONTROL AND BEING UTILIZED WITH AT LEAST A SECOND SUCH FREE TURBINE ENGINE TO PROVIDE POWER, COMPRISING: TACHOMETER MEANS FOR SENSING THE SPEED OF THE FREE TURBINE OF THE FIRST OF SAID ENGINES AND FOR GENERATING A SIGNAL COMMENSURATE THEREWITH, MEANS FOR PRODUCING A SIGNAL INDICATIVE OF THE DESIRED SPEED OF THE FREE TURBINE OF THE FIRST ENGINE, MEANS FOR COMPARING SAID SIGNAL COMMENSURATE WITH SPEED WITH SAID DESIRED SPEED SIGNAL TO PROVIDE A SPEED ERROR SIGNAL, MEANS FOR SENSING A QUANTITY INDICATIVE OF THE POWER OUTPUT OF THE GAS GENERATOR OF THE FIRST ENGINE AND FOR GENERATING A FIRST SIGNAL COMMENSURATE THEREWITH, MEANS FOR SENSING A QUANTITY INDICATIVE OF THE POWER OUTPUT OF THE GAS GENERATOR OF THE SECOND ENGINE AND FOR GENERATING A SECOND SIGNAL COMMENSURATE THEREWITH, MEANS FOR COMPARING SAID FIRST AND SECOND POWER OUTPUT SIGNALS FOR PRODUCING A LOAD UNBALANCE SIGNAL, MEANS RESPONSIVE TO SAID SPEED ERROR AND LOAD UNBALANCE SIGNALS FOR PRODUCING A CONTROL SIGNAL, AND FUEL CONTROL OPERATING MEANS RESPONSIVE TO SAID CONTROL SIGNAL AND OPERATIVELY CONNECTED TO THE FUEL CONTROL ON THE FIRST ENGINE FOR CAUSING ADJUSTMENT OF THE FUEL FLOW TO THE FIRST ENGINE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |