IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0585208
(2006-10-24)
|
등록번호 |
US-7578654
(2009-09-08)
|
우선권정보 |
FR-05 10915(2005-10-26) |
발명자
/ 주소 |
- Lorin De La Grandmaison, François
- Morant, Michel
- Ardesi, Olivier
- Gaffiero, Jacques
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
3 |
초록
▼
A rotorcraft rotor blade (1) includes at least one tiltable trailing-edge flap (5), the flap (5) being suitable for pivoting about a virtual hinge axis (Y') extending substantially along the span of the blade (1) and of the flap (5). The blade (1) is remarkable in that it is provided with at least o
A rotorcraft rotor blade (1) includes at least one tiltable trailing-edge flap (5), the flap (5) being suitable for pivoting about a virtual hinge axis (Y') extending substantially along the span of the blade (1) and of the flap (5). The blade (1) is remarkable in that it is provided with at least one main ball joint (30) provided with an inner cage (32) together with a first pin (31) and an outer cage (33), the front portion (33') of the outer cage (33) of the main ball joint (30) being connected to a linear actuator (10, 10') arranged in the blade (1) and serving to pivot the flap (5), the first pin (31) of the main ball joint (30) being substantially perpendicular to the virtual hinge axis (Y') about which the flap (5) pivots.
대표청구항
▼
What is claimed is: 1. A rotorcraft rotor blade (1) including at least one tiltable trailing-edge flap (5), said flap (5) being suitable for pivoting about a virtual hinge axis (Y') extending substantially along the span of said blade (1) and of said flap (5), said blade (1) including at least one
What is claimed is: 1. A rotorcraft rotor blade (1) including at least one tiltable trailing-edge flap (5), said flap (5) being suitable for pivoting about a virtual hinge axis (Y') extending substantially along the span of said blade (1) and of said flap (5), said blade (1) including at least one main ball joint (30) provided with an inner cage (32) together with a first pin (31) and an outer cage (33), the front portion (33') of said outer cage (33) of the main ball joint (30) being connected to a linear actuator (10, 10') arranged in said blade (1) and serving to pivot said flap (5), said first pin (31) of the main ball joint (30) being substantially perpendicular to said virtual hinge axis (Y') about which said flap (5) pivots. 2. A blade according to claim 1, wherein the axis of symmetry of said main ball joint (30) is arranged substantially 25% of the way along the chord of said flap (5), starting from the leading edge of said flap (5). 3. A blade according to claim 1, wherein said main ball joint (30) is self-lubricating. 4. A blade according to claim 1, wherein said first pin (31) is secured to said blade (1), said outer and inner cages (33, 32) of the main ball joint (30) being disposed between the top and bottom plates (15, 16) of a fork arranged at the trailing edge of the blade, said first pin (31) of the main ball joint (30) passing through said top and bottom plates (15, 16). 5. A blade according to claim 4, wherein said actuator (10) is connected to said front portion (33') of the outer cage (33) of said main ball joint (30) successively via a first connecting rod (40), a crank (41), an extensible flexible pivot (43), and then via a second connecting rod (44). 6. A blade according to claim 5, wherein said first connecting rod (40) is a flexible leaf. 7. A blade according to claim 6, wherein said flexible leaf is integrated with said crank (42). 8. A blade according to claim 5, wherein said extensible flexible pivot (43) comprises a simple pivot (43'), a rod (43"'), and a threaded sleeve (43"), said simple pivot (43') being connected firstly to said crank (42) and secondly to said rod (43"'), the threaded sleeve (43") being secured to the second connecting rod (44), said rod (43"') being engaged in said threaded sleeve (43"). 9. A blade according to claim 5, wherein said extensible flexible pivot (43) comprises a spring (45) having turns that touch at rest, said spring (45) being secured firstly to said crank (42) and secondly to said second connecting rod (44). 10. A blade according to claim 4, wherein the rear portion (33") of the outer cage (33) of the main ball joint (30) is secured to the flap (5). 11. A blade according to claim 1, wherein said blade (1) has two actuators (10, 10'), said blade being provided with two main ball joints (30, 30') spaced apart by a distance (L1) along the span of the flap that is equal to half said span (L) of said flap. 12. A blade according to claim 1, wherein said blade includes at least one fastener ball joint that is not controllable by an actuator.
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