IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0405266
(1989-09-11)
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우선권정보 |
FR-0012141 (1988-09-16) |
발명자
/ 주소 |
- Aubry Jacques A. (Cabries FRX) Mondet Jean J. (Pelisanne FRX)
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출원인 / 주소 |
- Societe Nationale Industrielle et Aerospatiale des Poudres et Explosifs (Paris FRX 07)
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인용정보 |
피인용 횟수 :
3 인용 특허 :
0 |
초록
▼
The invention relates to a control device for monocyclic pitch in a fixed reference system and multicyclic pitch in a rotating reference system, for the blades (7) of a rotor craft. In addition to conventional swashplates (27, 38), one (38) of which rotates (39) on the other (27) held in rotation by
The invention relates to a control device for monocyclic pitch in a fixed reference system and multicyclic pitch in a rotating reference system, for the blades (7) of a rotor craft. In addition to conventional swashplates (27, 38), one (38) of which rotates (39) on the other (27) held in rotation by a nonrotating compass (28), but which slides axially (4) and oscillates (25) about the rotor mast (1), through the action of pilot control (30), it comprises multicyclic jacks (45) in a number equal to the blades (7), and each of which is implanted in the rotating plate (38) and directly drives a pitch control rod (44) of a corresponding blade (7). Each multicyclic jack (45) is a dual-action, hydraulic linear jack controlled by a servovalve (49) also implanted on the rotating plate (38).
대표청구항
▼
A control device for monocyclic pitch in a fixed reference system and multicyclic pitch in a rotating reference system for the blades (7) of a rotor of a rotor craft, comprising, in order to ensure the control of collective and monocyclic pitch in a fixed reference system, a swashplate (27, 38) asse
A control device for monocyclic pitch in a fixed reference system and multicyclic pitch in a rotating reference system for the blades (7) of a rotor of a rotor craft, comprising, in order to ensure the control of collective and monocyclic pitch in a fixed reference system, a swashplate (27, 38) assembly comprising: a nonrotating plate (27) mounted, on the one hand, so as to slide axially about a fixed cylindrical guide (4), integrally attached to the structure (6) of the rotor craft and substantially surrounding coaxially the rotor mast (1) and, on the other hand, oscillating angularly by means of a universal joint (25) on the axis (A) of the rotor mast (1), at least one nonrotating compass (28) articulated, on the one hand, on said structure (6) of the rotor craft and, on the other hand, on said nonrotating plate (27), at least three actuators (30), under pilot control, each of which is connected, on the one hand, to said structure (6) of the rotor craft and, on the other hand, to said nonrotating plate (27) in order to control the translation and tilt movements of said nonrotating plate (27) respectively along said guide (4) and on said universal joint (25), a rotating plate (38) mounted in rotation by means of at least one bearing (39) on said nonrotating plate (27) and substantially coaxially to the latter, at least one rotating compass (41) articulated, on the one hand, on said rotating plate (38) and, on the other hand, on said rotor (1, 2), and pitch control rods (44) in a number equal to the blades (7) of the rotor and each of which is connected, on the one hand, to said rotating plate (38) and, on the other hand, to a pitch control lever (24) of a corresponding blade (7) of the rotor, the device also comprising, to ensure the multicyclic pitch control in a rotating reference system, multicyclic linear actuators (45), in a number equal to the blades (7) of the rotor, disposed outside the rotor mast (1) and substantially longitudinally with respect to the axis (A) of said rotor mast (1), and mounted so as to rotate with the rotor (1, 2) about said axis (A) such that each multicyclic actuator (45) drives a pitch control rod (44) of a corresponding blade (7) of the rotor, wherein the multicyclic linear actuator of each blade (7) is a dual-action hydraulic jack (45) with at least one body implanted on said rotating plate (38) by means of one of the two elements constituted by its cylinder (48) and its rod (46), whilst the other element of the jack (45) is directly articulated on said pitch control rod (44) of the corresponding blade (7), each body of said jack (45) being supplied from at least one hydraulic power circuit by means of at least one electrohydraulic control servovalve (49).
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