31.
    发明专利
    未知

    公开(公告)号:DE2949156A1

    公开(公告)日:1980-06-26

    申请号:DE2949156

    申请日:1979-12-06

    Abstract: A helicopter rotor having an even number of articulated blades wherein opposing blades are interconnected by a common spar passing across the rotor axis. Pitch change is introduced to the blade at the spar-blade attachment joint through a torque member connected at its outboard end to the blade joint and including a control horn at its inner end to receive pitch inputs. Drive for the rotor and support for each blade is provided by a spherical bearing directly connecting the torque member to the blade associated hub arm.

    BLADE FOLD RESTRAINT SYSTEM
    37.
    发明专利

    公开(公告)号:AU530102B2

    公开(公告)日:1983-06-30

    申请号:AU5731880

    申请日:1980-04-10

    Abstract: In a fully articulated helicopter rotor head, utilizing an elastomeric bearing to support each rotor blade and react centrifugal flight loads, a blade restraint, effective in three axes is provided for use during blade folding for aircraft stowage purposes. The restraint allows the blade to be folded through a predetermined fold plane, and held there while preventing or minimizing deflection of the elastomeric bearing.

    40.
    发明专利
    未知

    公开(公告)号:NO145830B

    公开(公告)日:1982-03-01

    申请号:NO792116

    申请日:1979-06-25

    Abstract: A helicopter rotor having one or more blades mounted for rotation with the rotor hub and each supported therefrom by an elastomeric bearing, and having a lead-lag damper connected to the blade and the hub and extending substantially parallel to the blade axis, and including the improvement of apparatus for preventing tension loading of the elastomeric bearing as the blade moves radially inwardly as a result of rotor braking.

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