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    PINNED AIRFOIL PROPELLER ASSEMBLY
    1.
    发明专利
    PINNED AIRFOIL PROPELLER ASSEMBLY 未知

    公开(公告)号：CA1335444C

    公开(公告)日：1995-05-02

    申请号：CA607707

    申请日：1989-08-08

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： VIOLETTE JOHN A ,  AUYEUNG SEAN ,  NAGLE DAVID P

    IPC: B64C11/06 ,  B64C11/04 ,  F01D5/30 ,  F04D29/32

    Abstract: A propeller or fan blade is rotatably mounted to a blade retention pitch member by means of a pin radially outside of a spinner. By mounting the propeller blade for rotation about the axis of the pin, the blade response to a vibratory excitation in a first mode of vibration is modified such that the twisting motion of the blade is minimized. High speed stability of the blade is enhanced thereby. Moreover a damaged blade may be easily replaced.

    2.
    发明专利
    未知

    公开(公告)号：BR9206514A

    公开(公告)日：1995-10-31

    申请号：BR9206514

    申请日：1992-10-06

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： GRAFF JOHN M ,  VIOLETTE JOHN A

    IPC: B29C70/86 ,  B29D99/00 ,  B64C11/26 ,  B29D31/00 ,  B29C70/00

    Abstract: A method of manufacturing a lightweight composite propulsor blade of spar and shell construction comprises forming a composite spar (30) having an elongated foam body (20) bonded to a short metal retention tulip (10) and overlayed with a dry braided wrap of angular structural fibers and substantially unidirectional spanwisely aligned structural fiber plies disposed between the braided layers; adding a leading edge foam body (42) and a trailing edge foam body (44) to the spar assembly to form a blade subassembly (50); providing a dry braided fabric wrap over the blade assembly; disposing the fabric covered blade subassembly into a shell molding die and simultaneously impregnating the dry spar fabric wrap and the dry shell fabric wrap with a curable resin material; and curing the impregnated blade subassembly.

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