Aircraft engine variable highlight inlet
Abstract
Abstract AN AIRCRAFT JET ENGINE LEADING EDGE DOUBLE FOIL STRUCTURE COMPRISING A PIVOTALLY MOUNTED EXTERIOR FOIL WHICH FORMS THE LEADING EDGE CONTOUR AND EXTERIOR COWL FAIRING IN A CLOSED POSITION DURING HIGH-SPEED FLIGHT AND WHICH IS RESPONSIVE TO AERODYNAMIC PRESSURES TO PIVOT TO EXPAND THE LEADING EDGE DIAMETER OR HIGHLIGHT DURING TAKE-OFF LOW-SPEED FLIGHT. A PIVOTALLY MOUNTED INTERIOR FOIL ACTS AS AN INTERNAL COWLING FAIRING FOR HIGH-SPEED FLIGHT AND PIVOTS TO COMBINE WITH SAID EXTERIOR FOIL TO FORM AN AERODYNAMICALLY CLEAN AUXILIARY AIR LONGITUDINALLY ALONG THE INTERIOR DIRECTS THE AUXILIARY AIR LONGITUDINALLY ALONG THE INTERIOR WALL OF THE INTAKE COWLING, THEREBY PROVIDING BOUNDARY LAYER CONTROL AND DECREASING PRESSURE RECOVERY LOSSES.
Inventors
- 👤 Wallace E Skidmore
- 👤 Bjarne E Syltebo
- 👤 Wilton S Viall
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |