Combustion devices
Abstract
Abstract TWO CONCENTRIC ANNULAR TUBES ARE MOUNTED CO-AXIALLY WITHIN AN AFTERBURNER DUCT WITH AN ANNULAR FLOW SPLITTER DISPOSED BETWEEN THEM. TWO CIRCUMFERENTIAL ROWS OF HOLES ARE DRILLED IN THE DOWNSTREAM QUADRANTS OF THE TUBES (RELATIVE TO FLOW THROUGH THE DUCT) WHICH FACE EACH OTHER. THE APPLICATION OF SUCTION TO THE TUBES ACTS THROUGH THE HOLES ON THE BOUNDARY LAYER OF FLOW OVER THE TUBES TO MOVE THE RESPECTIVE SEPARATION POINTS FURTHER DOWNSTREAM AND THUS DEFLECT THE FLOW TO CAUSE RECIRCULATION PATTERNS. A SIMILAR EFFECT CAN BE OBTAINED BY BLOWING FROM SUITABLY SHAPED APERTURES IN THE TUBES. THE TUBES MAY ALTERNATIVELY BE STRAIGHT AND ARRANGED TRANSVERELY ACROSS A DUCT WITH THEIR RESPECTIVE AXES PARALLEL.
Inventors
- 👤 William Dean Bryce
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |