Combustion devices
Abstract
Abstract THE VANE OF AEROFOIL SECTION HAS RECESSES OF GENERALLY ELLIPTICAL SHAPE IN ITS SIDE SURFACES. SEPARATION OF FLOW ROUND THE VANE OCCURS AT THE RESULTANT DISCONTINUITIES AND CAUSES RECIRCULATION WITHIN THE RECESSES, THE LENGTH OF WHICH ENSURES REDUCTION IN VELOCITY COMPARED WITH FREE STREAM FLOW TO ALLOW ADEQUATE MIXING BETWEEN UNBURNT FUEL/AIR MIXTURE AND COMBUSTION GASES. IN ONE ARRANGEMENT, AN INLET IS PROVIDED IN THE LEADING EDGE OF THE VANE FOR GAS WHICH IS DISCHARGED FROM SLOTS POSITIONED REARWARDLY OF THE RECESSES AS A COOLING FILM OVER THE DOWNSTREAM SURFACES OF THE VANE. THE SURFACES OF THE RECESSES MAY BE OF CERAMIC (E.G., SILICON NITRIDE) OR OTHER REFRACTORY MATERIAL.
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |