Size scaling trends are reviewed and updated. An investigation is presented into the effect that airplane size has on dynamic floor pulses generated within the cabin during a crash impact event. Included is: (1) A review of narrow-body and wide-body section test results and supporting analytical model results; (2) The utilization of the Controlled Impact Demonstration (CID) validated KRASH model to perform additional parametric studies; (3) Defined relationships between parameters which influence aircraft structure dynamic response; and (4) Developed airplane preliminary size effect trend curves for floor dynamic pulses in terms of triangular pulse magnitudes, velocity changes and pulse duration. A simple approximate expression relating aircraft fuselage crush energy dissipation and kinetic energy are utilized to generate a set of triangular pulse velocity - crush distance - peak acceleration curves. Estimated effective crush distances for various classes of airplane sizes or categories and available acceleration, velocity and crush data are plotted. Plots for vertical-direction and longitudinal-direction are presented.


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    Title :

    Effect of Aircraft Size on Cabin Floor Dynamic Pulses


    Contributors:
    G. Wittlin (author) / L. Neri (author)

    Publication date :

    1990


    Size :

    60 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Effects of Aircraft Size on Cabin Floor Dynamic Pulses

    Caiafa, Caesar A. / Neri, Lawrence M. | SAE Technical Papers | 1988


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