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    32.
    发明专利
    未知

    公开(公告)号：DE3877848T2

    公开(公告)日：1993-05-19

    申请号：DE3877848

    申请日：1988-07-14

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： FERRIS DONALD L ,  BYRNES FRANCIS E

    IPC: B64C27/35 ,  B64C27/32

    Abstract: The fiber reinforced braided composite main helicopter rotor hub retention plate has a fiber orientation that withstands forces both in the plane of the retention plate and normal to the plane. The retention plate comprises a fiber reinforced resin braided tubular ring (3) having substantially circumferential fibers interwoven with angled fibers disposed about a central core. Arms (24) extend inward from the braided ring (9) for attachment to a driveshaft.

    ARTICULATED HELICOPTER ROTOR WITH AN IMPROVED BLADE-TO-HUB CONNECTION
    33.
    发明专利
    ARTICULATED HELICOPTER ROTOR WITH AN IMPROVED BLADE-TO-HUB CONNECTION 未知

    公开(公告)号：CA2056190A1

    公开(公告)日：1992-06-18

    申请号：CA2056190

    申请日：1991-11-26

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BYRNES FRANCIS E ,  HIBYAN EDWARD S ,  NOEHREN WILLIAM L

    IPC: B64C27/48 ,  B64C27/33 ,  B64C27/35

    Abstract: An articulated helicopter rotor with an improved blade-to-hub connection. An articulated helicopter rotor wherein the blade-to-hub connection consists of a spherical elastomeric bearing connected to the hub and a composite yoke connected thereto in series and consisting of a plurality of unidirectional high strength fibers bonded together to form a continuous strap which passes through a central opening in the elastomeric bearing and is pin-wrap connected to the hub at a single station and to the blade at two spaced stations so is to produce a construction which is light in weight, easy to manufacture, ballistically tolerant, redundant, and readily visually inspectable for structural integrity. S-4100 - 21

    ELASTOMERIC SWASHPLATE CONFIGURATION FOR HELICOPTERS
    35.
    发明专利
    ELASTOMERIC SWASHPLATE CONFIGURATION FOR HELICOPTERS 未知

    公开(公告)号：CA2052429A1

    公开(公告)日：1992-04-12

    申请号：CA2052429

    申请日：1991-09-26

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BYRNES FRANCIS E ,  HIBYAN EDWARD S ,  KRAUSS ALBERT T

    IPC: B64C27/605

    Abstract: Elastomeric Swashplate Configuration for Helicopters A swashplate configuration for a helicopter which eliminates the need for scissors linkages through the use of a centering member capable of tilt and axial translation while driving torque to the rotating swashplate member through the use of elastomeric bearing assemblies each consisting of a first stack of flat laminates and a second stack of spherical laminates.

    A HYBRID COMPOSITE FLEXBEAM FOR A HELICOPTER BEARINGLESS MAIN ROTOR ASSEMBLY
    40.
    发明专利
    A HYBRID COMPOSITE FLEXBEAM FOR A HELICOPTER BEARINGLESS MAIN ROTOR ASSEMBLY 未知

    公开(公告)号：CA2223684A1

    公开(公告)日：1996-12-12

    申请号：CA2223684

    申请日：1995-06-09

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHMALING DAVID N ,  BYRNES FRANCIS E

    IPC: B64C27/35 ,  B29C70/20 ,  B64C27/33

    Abstract: A hybrid composite flexbeam (10) for a soft inplane bearingless main rotor assembly (100) has eight spanwise regions: a hub attachment region (12); a first tapered region (14); a second tapered region (16); an inboard transition region (18); a pitch region having a cruciform configuration (20); an outboard transition region (22); a tapered outboard transition region (24); and a main rotor blade, torque tube attachment region (26). The pitch region (20) is formed from unidirectional fiberglass plies, a 50/50 admixture of unidirectional fiberglass and graphite plies, and unidirectional graphite plies. Unidirectional fiberglass and graphite plies of varying lengths are interleaved in the second inboard tapered region (16). Fiberglass and graphite cross plies of varying lengths are interleaved in the first inboard tapered region (14). Fiberglass and graphite cross plies and unidirectional fiberglass plies of varying length are interleaved in the outboard tapered region (24). The distributed arrangement of ply endings cause kick loads (97) in the hybrid flexbeam (10) to be distributed across the ply buildups.

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