[특허]Thrust reverser cascade assembly with flow deflection shelf

Rohr, Inc.

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특허 상세정보

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Thrust reverser cascade assembly with flow deflection shelf

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02K-001/72
출원번호	US-0308865 (2011-12-01)
등록번호	US-9086034 (2015-07-21)
발명자 / 주소	Aten, Michael Ray Crawford, Sara Christine
출원인 / 주소	Rohr, Inc.
대리인 / 주소	Snell & Wilmer, L.L.P.
인용정보	피인용 횟수 : 2 인용 특허 : 27

초록
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An aircraft engine thrust reverser cascade assembly includes a plurality of circumferentially spaced cascade segments, each cascade segment including a plurality of spaced vanes, including an aft-most vane, and rails defining a series of cells or air passages therebetween. The cascade assembly also includes an aft cascade ring removably attached to the aft ends of the cascade segments. A flow deflection shelf is mounted to each of the cascade segments and includes a deflector portion that at least partially extends forward of a group of cells of the cascade segments along which the flow deflection shelf is mounted. The deflector portion is configured to at least partially redirect at least a portion of a volume of air forwardly as the air outwardly passes through the group of cells of the cascade segments.

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1. An aircraft engine thrust reverser cascade assembly comprising: (a) a plurality of circumferentially spaced cascade segments, each cascade segment including a forward end, an aft end, and a plurality of ribs and spaced vanes defining a series of air passages therebetween, and with the vanes including an aft-most vane; and(b) a flow deflection shelf mounted along the aft end of each cascade segment, the flow deflection shelf mounted substantially perpendicular to the aft most vanes and configured to at least partially redirect at least a portion of air passing through each cascade segment forwardly as the air passes outwardly between aft-most vanes and the aft end of each cascade segment; and(c) an aft cascade ring comprising a body portion and a deflection portion, the body portion attached to each cascade segment and the deflection portion position to form an angle of less than ninety degrees relative to the flow deflection. 2. An aircraft engine thrust reverser cascade assembly according to claim 1 wherein the deflector portion comprises a shelf extending at least partially forward over the air passages between the aft-most vanes and the body portion of the flow deflection shelf. 3. An aircraft engine thrust reverser cascade assembly according to claim 1 wherein the body portion of the flow deflection shelf defines an aft wall of each cascade segment. 4. An aircraft engine thrust reverser cascade assembly according to claim 1 wherein the aft cascade ring further includes a body portion having an inner portion adjacent and connected to the body portion of the flow deflection shelf. 5. An aircraft engine nacelle with a thrust reverser cascade assembly comprising: (a) a plurality of circumferentially spaced cascade segments, each cascade segment comprising a series of rails and spaced vanes, including an aft-most vane, spaced rows of air flow passages defined between the rails and vanes, and an aft end; and(b) an aft cascade ring attached to the aft end of each cascade segment with a plurality of fasteners, the aft cascade ring comprising a body and an deflection portion; and(c) an air flow deflector mounted on at least a portion of the aft most vane, and between the aft most vane and the deflection portion, the air flow deflector at least partially perpendicularly overlying an aft most row of air flow passages for redirecting at least a portion of air passing outwardly through the selected row of air flow passages. 6. An aircraft engine nacelle according to claim 5 wherein the air flow deflector comprises at least one flow deflection shelf mounted to at least one cascade segment and including a deflector portion positioned aft of the aft-most vane and wherein the deflector portion extends forwardly of the aft end of the at least one cascade segment, and a body portion defining a substantially flat aft end wall to which the aft cascade ring is attached in a substantially flush-mounted arrangement. 7. An aircraft engine nacelle according to claim 6 wherein the deflector portion has a substantially flat, forwardly extending configuration at least partially overlying a row of aft-most air flow passages defined between the aft-most vane of the at least one cascade segment and the body portion of the flow deflection shelf. 8. An aircraft engine nacelle according to claim 5 wherein each flow deflection shelf is connected in series to define a hoop structure extending about and supporting the cascade segments to form the cascade assembly. 9. An aircraft engine nacelle according to claim 5 wherein the aft cascade ring comprises at least two arcuate ring segments. 10. A cascade assembly for an aircraft engine thrust reverser, comprising: (a) a plurality of cascade segments connected in series, each of said cascade segments including an aft end, a forward end, a series of longitudinally extending rails, a series of laterally extending vanes, including an aft-most vane connected to said rails, and a plurality of rows air flow passages defined between said rails and said vanes;(b) an aft cascade ring comprising a body portion and a flow deflection portion mounted to said aft end of each cascade segment, the body portion configured for attaching and maintaining said cascade segments in connected series and the flow deflection portion configured to at least partially direct air flow exhausted through an aft row of air flow passages; and(c) a plurality of flow deflection shelves, each mounted between each of said cascade segments and said aft cascade ring and including a forwardly extending deflector portion that at least partially overlies a selected row of air flow passages so as to redirect at least a portion of air passing through said selected row of air passages. 11. The cascade assembly of claim 10 wherein each of said flow deflection shelves is mounted adjacent said aft end of an associated cascade segment, spaced rearwardly from the aft-most vane of said associated cascade segment. 12. The cascade assembly of claim 11 wherein each of said flow deflection shelves further comprises an upstanding body portion defining a substantially flat aft wall of its associated cascade segment to which said aft cascade ring is attached in a substantially flush mounted arrangement. 13. The cascade assembly of claim 10 wherein each of said plurality of flow deflection shelves is mounted along said aft ends of said cascade segments, spaced rearwardly of said aft-most vane of each of said cascade segments and defining a substantially flat aft wall to which said aft cascade ring attaches in a substantially flush mounted arrangement. 14. The cascade assembly of claim 10 wherein said flow deflection shelves are connected in series to define a supporting hoop structure for connecting said cascade segments in series.

이 특허에 인용된 특허 (27)

이 특허를 인용한 특허 피인용횟수: 2

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Thrust reverser cascade assembly with flow deflection shelf

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Thrust reverser cascade assembly with flow deflection shelf

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이 특허에 인용된 특허 (27)

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