US3106820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Afterburner control method and apparatus
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1959-04-15
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Granted: 1963-10-15
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Expires: 1979-04-15
Abstract
No abstract record available.
Inventors
- 👤 Allan B Schaffer
- 👤 Stuart L Ridgway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:40
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/22; F01N3/227; G; G05; G05D; G05D11/00; G05D11/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A METHOD OF PROVIDING ADDITIONAL AIR FOR AN AFTERBURNER TO COMPLETE THE COMBUSTION OF EXHAUST GAS FROM A THROTTLE-CONTROLLED INTERNAL COMBUSTION ENGINE COMPRISING THE STEPS OF: FIRST, SUPPLYING AIR IN ACCORDANCE WITH THE TOTAL FLOW OF AIR-FUEL MIXTURE PASSING THROUGH THE ENGINE IN A GIVEN UNIT OF TIME; SECOND, SENSING THE ACTUAL AIR-FUEL RATIO DIVIDED INTO THE STOICHIOMETRICALLY CORRECT AIR-FUEL RATIO OF THE TOTAL FLOW PASSING THROUGH THE ENGINE IN A GIVEN UNIT OF TIME; AND CONTROLLING THE AIR SUPPLY TO THE AFTERBURNER IN ACCORDANCE WITH THE FIRST AND SECOND STEPS SO AS TO MAINTAIN IN THE AIR-EXHAUST MIXTURE WITHIN THE AFTERBURNER AN ACTUAL AFTERBURNER FUEL-RATIO WHICH, WHEN DIVIDED INTO THE STOICHIOMERTRICALLY CORRECT FUEL-RATIO, IS EQUAL TO SLIGHTLY LESS THAN ONE.
Claim 2
Independent Claim
121 words
A METHOD OF PROVIDING ADDITIONAL AIR FOR AN AFTERBURNER TO COMPLETE THE COMBUSTION OF EXHAUST GAS FROM A THROTTLE-CONTROLLED INTERNAL COMBUSTION ENGINE COMPRISING THE STEPS OF: FIRST, SUPPLYING AIR IN ACCORDANCE WITH THE TOTAL FLOW OF AIR-FUEL MIXTURE PASSING THROUGH THE ENGINE IN A GIVEN UNIT OF TIME; SECOND, SENSING THE ACTUAL AIR-FUEL RATIO DIVIDED INTO THE STOICHIOMETRICALLY CORRECT AIR-FUEL RATIO OF THE TOTAL FLOW PASSING THROUGH THE ENGINE IN A GIVEN UNIT OF TIME; AND CONTROLLING THE AIR SUPPLY TO THE AFTERBURNER IN ACCORDANCE WITH THE FIRST AND SECOND STEPS SO AS TO MAINTAIN IN THE AIR-EXHAUST MIXTURE WITHIN THE AFTERBURNER AN ACTUAL AFTERBURNER FUEL-RATIO WHICH, WHEN DIVIDED INTO THE STOICHIOMERTRICALLY CORRECT FUEL-RATIO, IS EQUAL TO SLIGHTLY LESS THAN ONE.
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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) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |