51.
    发明专利
    未知

    公开(公告)号:FR2584996B1

    公开(公告)日:1987-11-13

    申请号:FR8511159

    申请日:1985-07-22

    Applicant: AEROSPATIALE

    Abstract: The integrated hub-mast (1) of the invention is composed of a tubular single piece body whose hub body forming part (3) is integral, on the side of its end end opposite the mast (2), with a reinforcing ring (5) and in which openings (6) are pierced. For each blade of the rotor, a stratified spherical stop (16) is fixed against the ring (5) and is retained in the hub body (3) and this stop (16) is also fixed to the ends integral to the hub body (3) of the lower (24) and upper (25) branches of a forked fastening part (23) connecting the blade (22) to the stop (16), the lower branch (24) passing through an opening (6) in the hub (3). A central flapping stop (30) is mounted on a support (31), in the hub-mast (1), which carries external fastenings for coupling to the resilient drag return and damping members of the blade.

    53.
    发明专利
    未知

    公开(公告)号:FR2516891A1

    公开(公告)日:1983-05-27

    申请号:FR8122027

    申请日:1981-11-25

    Applicant: AEROSPATIALE

    Abstract: The invention concerns a helicopter rotor, the rigid hub (1) of which comprises a central drum (2) which is disposed substantially in line with the rotor mast (3) and which carries an upper plate (4) and a lower plate (6). This rigid hub (1) is connected to the root of each blade (26) by way of a laminated spherical stop (13) and a resilient-return drag brace. Each blade (26) comprises, in the zone of its root, a rigid loop (27) which surrounds the laminated spherical stop (13) in a continuous manner and is engaged in the inner movable fitting (24) of this stop (13) by means of a wedge (30) co-operating with the outer fixed fitting (15) of the stop (13).

    54.
    发明专利
    未知

    公开(公告)号:FR2474996A1

    公开(公告)日:1981-08-07

    申请号:FR8002505

    申请日:1980-02-05

    Applicant: AEROSPATIALE

    Abstract: The invention relates to aeronautics in general, and in particular to a suspension device for helicopter, comprising a flexible mounting plate at the center of which is fixed the bottom of the main gear box whose top is supported by hinged oblique bars. The mounting plate offers radial arms hinged to the base of the bars and to the fuselage of the helicopter. These arms bear flapping weights creating forces of inertia with reactions at the attachment points of direction opposite the elastic reactions of deformation of the mounting plate. A device of this type enables the vibrations on board helicopters to be reduced.

    56.
    发明专利
    未知

    公开(公告)号:FR2310920A1

    公开(公告)日:1976-12-10

    申请号:FR7514987

    申请日:1975-05-14

    Applicant: AEROSPATIALE

    Abstract: The present invention relates to a rotor arrangement for rotary-wing aircraft, comprising at least one pair of opposite blades mounted on a common one-piece beam, which is twistable, flexible and whose median part rotates with the shaft of the rotor.

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