This program investigated the relationships between aircraft weight, the level of crashworthiness in the design, and the cost and weight associated with crashworthiness elements of the design. Accident and research data were reviewed and actual aircraft designs were analyzed with respect to their levels of crashworthiness and potential improvements. Processing of the data yielded cost and weight curves for use in preliminary design. The curves provide the relationships between gross weight, mean empty weight, levels of crashworthiness, and selected design elements that contribute to crashworthiness for designs employing metallic or composite materials and having gross weights up to 50,000 pounds. Comparisons were made with the current ACAP analyses and results showed good agreement for the weight values and level of crashworthiness. The intent of the curves is to allow the designer to rapidly optimize the weights of a preliminary design with respect to performance and utility, and to assess the impact on crashworthiness of reducing the weight of the structure or other crashworthiness contributions. When weight values are resolved, cost curves are then used. A 'Scout' helicopter was defined for both a metallic and composite structure and comparisons were made using the curves generated in this report. (Author)


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    Title :

    Crashworthiness Design Parameter Sensitivity Analysis


    Contributors:

    Publication date :

    1981


    Size :

    281 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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