The present work outlines a study whose objective was to assess the possible use of advanced composite materials to helicopter fuselage structure. The study used the CH-53D as a baseline design for comparison of composite with current conventional construction. Boron/epoxy and graphite/epoxy appeared to be the prime candidate materials for the major portion of the primary structure, while Kevlar-49/epoxy was the prime candidate material for secondary structure. A single-laminate shear-carrying skin combined with stringers and frames in an all-molded construction was considered the most promising concept for the airframe shell construction; foam-stabilized graphite/epoxy stringer was considered the prime concept for stringer construction. Shell construction and assembly concepts are discussed, and comparison of weight and material between current CH-53D airframe and the composite airframe shows that the latter may represent an 18% weight saving. Based on a fleet requirement of 600 vehicles, the operating cost for a fleet of helicopters constructed with the composite material airframe flying 500 hours a year per aircraft over a ten-year service life was calculated, indicating a $337,000 saving per helicopter.


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    Titel :

    Application of advanced composites to helicopter airframe structures


    Beteiligte:
    Rich, M. J. (Autor:in) / Ridgley, G. F. (Autor:in) / Lowry, D. W. (Autor:in)

    Kongress:

    Annual National V/STOL Forum ; 1974 ; Washington, DC


    Erscheinungsdatum :

    1974-05-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Application of Composites to Helicopter Airframe and Landing Gear Structures

    M. J. Rich / G. F. Ridgley / D. W. Lowry | NTIS | 1973


    Application of Composites to Helicopter Airframe and Landing Gear Structures

    M. J. Rich / G. F. Ridgley / D. W. Lowry | NTIS | 1973


    Application of composites to helicopter airframe and landing gear structures

    Rich, M. J. / Ridgley, G. F. / Lowry, D. W. | NTRS | 1973


    Helicopter airframe

    FINK AXEL / STEINDL CHRISTOPH | Europäisches Patentamt | 2018

    Freier Zugriff

    Crashworthy design of helicopter composite airframe structures

    Boitnott, Richard L. / Kindervater, Christof | NTRS | 1989