Adaptively-twistable blade, and an aircraft including such a blade
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64C-027/473
B64C-027/72
F01D-005/14
출원번호
US-0510420
(2014-10-09)
등록번호
US-9802699
(2017-10-31)
우선권정보
FR-13 02363 (2013-10-11)
발명자
/ 주소
Zamponi, Laurent
Fontaine, Nicolas
Durand, Valerian
Hirsch, Jean-Francois
Grohmann, Boris
출원인 / 주소
Airbus Helicopters
대리인 / 주소
Brooks Kushman P.C.
인용정보
피인용 횟수 :
0인용 특허 :
14
초록▼
A blade (1) having an outer covering (2) defining a cavity (8). A carriage (20) is arranged in said cavity (8), the carriage (20) being provided with a torsion bar (21) and at least two arms (22) secured to the torsion bar (21). The blade has one connection per arm provided both with an upstream gui
A blade (1) having an outer covering (2) defining a cavity (8). A carriage (20) is arranged in said cavity (8), the carriage (20) being provided with a torsion bar (21) and at least two arms (22) secured to the torsion bar (21). The blade has one connection per arm provided both with an upstream guide gallery and with a downstream guide gallery, each arm extending transversely from an upstream end that slides in an upstream guide gallery to a downstream end that slides in a downstream guide gallery. At least one connection is a helical connection (40) obtained with the help of an upstream guide gallery (33) and the downstream guide gallery (34) of the segment (101) presenting distinct orientations, giving rise to movement in rotation (ROT1) of the segment (101) under the effect of the carriage (20) moving in translation.
대표청구항▼
1. An adaptively-twistable rotor blade provided with a lift element having an outer covering extending spanwise in a longitudinal direction from a first end zone to a second end zone, and transversely from a leading edge to a trailing edge, the outer covering defining an internal cavity, wherein sai
1. An adaptively-twistable rotor blade provided with a lift element having an outer covering extending spanwise in a longitudinal direction from a first end zone to a second end zone, and transversely from a leading edge to a trailing edge, the outer covering defining an internal cavity, wherein said blade includes at least one adaptive twister system provided with: a carriage arranged in said cavity, said carriage having a torsion bar extending along said longitudinal direction and at least two arms that are secured to the torsion bar and that extend transversely on either side of the torsion bar, said carriage being movable in translation in said cavity along said longitudinal direction;a connection on each arm for connecting said carriage to the outer covering, each connection including a segment including an upstream guide gallery arranged in the cavity between the leading edge of the blade and the torsion bar and a downstream guide gallery arranged in the cavity between the trailing edge of the blade and the torsion bar, each arm extending transversely from an upstream end that slides in an upstream guide gallery to a downstream end that slides in a downstream guide gallery; andat least one of said connections being a helical connection such that the segment associated therewith is a twister segment and the upstream guide gallery and the downstream guide gallery for the twister segment present distinct orientations, and impart movement in rotation to the twister segment under the effect of the carriage moving in translation. 2. A blade according to claim 1, wherein said torsion bar extends along a geometrical twist line of the blade. 3. A blade according to claim 1, wherein at least one arm of the at least two arms extends symmetrically on either side of the torsion bar and is perpendicular to the torsion bar. 4. A blade according to claim 1, wherein, for at least one of the segments, the upstream guide gallery associated therewith is arranged against the leading edge of the blade and the downstream guide gallery associated therewith is arranged against the trailing edge of the blade. 5. A blade according to claim 1, wherein at least one of the upstream and downstream guide galleries associated with the helical connection and the twister segment includes a plurality of inclined planes. 6. A blade according to claim 1, wherein at least one of the upstream and downstream guide galleries associated with the helical connection the twister segment includes a curved slope. 7. A blade according to claim 1, wherein at least one end of an arm of the at least two arms includes running means facilitating sliding of the arm in a corresponding guide gallery. 8. A blade according to claim 1, wherein said carriage includes the at least two arms co-operating with guide galleries by moving in rotation in opposite directions. 9. A blade according to claim 1, wherein each of said segments comprises a frame defining the upstream and downstream guide galleries associated therewith together with an orifice allowing the carriage to move in translation through the segment, said frame being covered by said outer covering. 10. A blade according to claim 1, wherein said carriage includes at least three arms. 11. A blade according to claim 1, wherein said blade includes at least two adaptive twister systems. 12. A blade according to claim 1, wherein said adaptive twister system includes an actuator connected to said carriage for moving said carriage in translation in at least one direction, said actuator being arranged in said cavity. 13. A blade according to claim 12, wherein said actuator comprises a motor and a wormscrew co-operating with a nut. 14. A blade according to claim 12, wherein said adaptive twister system includes a force-amplifying mechanical advantage device interposed between the actuator and the carriage. 15. A blade according to claim 14, wherein said mechanical advantage device comprises a hydraulic member having a main piston of large area in hydraulic communication with a plurality of intermediate pistons of small area, the main piston being constrained to move in translation with said carriage, each intermediate system being controlled by an actuator. 16. A blade according to claim 14, wherein said mechanical advantage device comprises an elongate tie connected to the carriage and to an actuator, the tie forming a loop around at least two pulleys. 17. A blade according to claim 14, wherein said mechanical advantage device comprises a cam connected to an actuator and to the carriage. 18. A blade according to claim 1, wherein the blade includes an actuator located outside the lift element and connected to the carriage by a tie. 19. A blade according to claim 1, wherein said carriage includes a device of variable mass in order to vary a centrifugal force exerted on the carriage. 20. A blade according to claim 1, wherein at least one arm of the at least two arms includes means for setting its length. 21. An aircraft having a rotor, wherein said rotor includes at least one blade according to claim 1. 22. An aircraft according to claim 21, wherein said aircraft includes a system for setting the speed of rotation of the rotor in order to set the centrifugal force applied to each carriage.
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이 특허에 인용된 특허 (14)
Bianchi, Laurent; Cuenca, Rémy; Galan, Mathieu; Reveillon, Damien, Blade with adaptive twisting, and a rotor provided with such a blade.
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Chaudhry, Zaffir; Collins, Andrew John; Jonsson, Ulf J; Sun, Fanping; Wake, Brian E; O'Callaghan, Michael G; Yeh, Jimmy Lin-Min, Self-lubricated actuator for on-blade rotor control.
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