IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0736901
(2013-01-08)
|
등록번호 |
US-8528312
(2013-09-10)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
5 |
초록
▼
The turbojet engine inlet and exhaust covers are permanently installed at the inlet and exhaust outlet or nozzle of an aircraft turbojet engine installation. The covers preclude the entrance of small animals, windblown debris, snow, and/or other contaminants into the engine inlet or exhaust while th
The turbojet engine inlet and exhaust covers are permanently installed at the inlet and exhaust outlet or nozzle of an aircraft turbojet engine installation. The covers preclude the entrance of small animals, windblown debris, snow, and/or other contaminants into the engine inlet or exhaust while the airplane is inoperative. The covers have an iris-type shutter configuration, each cover having a plurality of leaves pivotally attached to a circumferential stationary housing that is attached to the engine or nacelle. A rotary ring is rotated through a small arc to pivot the shutter leaves inward and outward to close and open the engine opening. The rotary ring may be driven by an electric motor, or by hydraulic or pneumatic power. The system may be automated to close according to engine temperature after flight, and/or to open upon initiation of the engine start sequence for the aircraft.
대표청구항
▼
1. A cover for a turbojet engine opening, comprising: a circular housing adapted for permanent circumferential installation about an inlet or exhaust opening of a turbojet engine;a selectively deployable and retractable shutter mechanism disposed adjacent the housing, the shutter mechanism selective
1. A cover for a turbojet engine opening, comprising: a circular housing adapted for permanent circumferential installation about an inlet or exhaust opening of a turbojet engine;a selectively deployable and retractable shutter mechanism disposed adjacent the housing, the shutter mechanism selectively opening the engine opening when deployed and closing the engine opening when retracted; andfurther comprising a rotary ring disposed concentric to the housing, the plurality of shutter leaves being pivotally disposed between the housing and the rotary ring, the rotary ring being linked to the shutter leaves so that rotation of the rotary ring relative to the housing pivots the shutter leaves inward and outward relative to the housing and rotary ring, and wherein the shutter leaves pivot in a circumferential direction. 2. The cover for a turbojet engine opening according to claim 1, wherein each of the shutter leaves has a leading edge and a trailing edge, the leading edge of each of the shutter leaves overlapping the trailing edge of the adjacent ones of the shutter leaves. 3. The cover for a turbojet engine opening according to claim 1, wherein the rotary ring has an outer peripheral surface and an inner peripheral surface, a plurality of gear teeth disposed in an arc upon the outer peripheral surface, and a plurality of gear teeth disposed about the inner peripheral surface of the rotary ring, the cover further comprising a pinion gear extending from each of the shutter leaves, each of the pinion gears engaging the gear teeth on the inner surface of the rotary ring. 4. The cover for a turbojet engine opening according to claim 3, further comprising: a motor; anda pinion drive gear extending from the motor, the pinion drive gear engaging the gear teeth on the outer peripheral surface of the rotary ring. 5. The cover for a turbojet engine opening according to claim 4, further comprising an outer ring disposed over the rotary ring, the pinion gears of the shutter leaves being captured between the housing and the outer ring. 6. A cover for a turbojet engine opening, comprising: a stationary circular housing adapted for mounting over the turbojet engine opening;a rotary ring disposed concentrically adjacent the housing; anda plurality of shutter leaves pivotally disposed between the housing and the rotary ring;wherein rotation of the rotary ring relative to the housing pivots the shutter leaves inward and outward relative to the housing and rotary ring, the shutter leaves closing the engine opening when pivoted inward and exposing the opening when pivoted outward, and wherein the shutter leaves pivot in a circumferential direction. 7. The cover for a turbojet engine opening according to claim 6, wherein each of the shutter leaves has a leading edge and a trailing edge, the leading edge of each of the shutter leaves overlapping the trailing edge of the adjacent ones of the shutter leaves. 8. The cover for a turbojet engine opening according to claim 6, wherein the rotary ring has an outer peripheral surface and an inner peripheral surface, a plurality of gear teeth disposed in an arc upon the outer peripheral surface, and a plurality of gear teeth disposed about the inner peripheral surface of the rotary ring, the cover further comprising a pinion gear extending from each of the shutter leaves, each of the pinion gears engaging the gear teeth on the inner surface of the rotary ring. 9. The cover for a turbojet engine opening according to claim 8, further comprising: a motor; anda pinion drive gear extending from the motor, the pinion drive gear engaging the gear teeth on the outer peripheral surface of the rotary ring. 10. The cover for a turbojet engine opening according to claim 9, further comprising an outer ring disposed over the rotary ring, the pinion gears of the shutter leaves being captured between the housing and the outer ring. 11. A turbojet engine, comprising: a jet engine having an inlet opening and an exhaust outlet opening; at least one circular housing permanently installed about at least one of the openings of the jet engine;an outer ring attached to the housing;a rotary ring rotatable mounted between the housing and the outer ring, the rotary ring having: an outer peripheral surface and a plurality of gear teeth disposed in an arc on the outer peripheral surface;an inner peripheral surface and a plurality of gear teeth disposed about the inner peripheral surface;a plurality of shutter leaves disposed between the rotary ring and the housing;a plurality of pivot pins having a first end rotatably mounted in the housing, a second end rotatably mounted in the outer ring, and a central section between the first and second ends, the central section having a plurality of gear teeth defined therein engaging the gear teeth on the inner peripheral surface of the rotary ring, each of the shutter leaves being mounted on a corresponding one of the pivot pins;a motor having a shaft and a pinion gear mounted on the shaft, the pinion gear engaging the gear teeth on the outer peripheral surface of the rotary ring;wherein the motor is selectively actuable to rotate the rotary ring to pivot the shutter leaves between a closed position covering the jet engine opening and an open position exposing the jet engine opening, wherein the shutter leaves pivot in a circumferential direction, the closed position providing a barrier preventing moisture and contaminants from entering the engine when the engine is not in use. 12. The turbojet engine according to claim 11, wherein each of the shutter leaves has a leading edge and a trailing edge, the leading edge of each of the shutter leaves overlapping the trailing edge of the adjacent ones of the shutter leaves. 13. The turbojet engine according to claim 11, wherein said motor comprises an electric motor.
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