The methodology currently used in Sweden for fatigue management and verification of airframes is described. Applications from the new fighter aircraft JAS39 Gripen are included in order to illustrate the various concepts being considered. Additional experience from recent work on the older fighter 37Viggen is also included to highlight certain differences in the detail analyses, stemming from rather different nominal stress levels in the two aircraft. The present paper discusses the handling of load sequences and load spectra development, stress analyses and fracture mechanics analyses, fatigue crack growth modelling, component and full scale testing, service load monitoring regarding both the dedicated test aircraft, which is used to verify basic load assumptions, and also the individual load tracking program developed for the new fighter.


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    Title :

    Fatigue Management and Verification of Airframes


    Contributors:
    A. F. Blom (author) / H. Ansell (author)

    Publication date :

    1994


    Size :

    25 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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