Within the context of a vibro-acoustic test program to study cabin noise reduction technology in a twin-engine turboprop commuter aircraft, results of a modal analysis are presented. A single input frequency response function method is used to perform the analysis in a ATR-42 aircraft. The test program includes three different measurement configurations for a total of 182 pick-ups, different frequency ranges of analysis up to 500 Hz, with and without a 5 PSI pressurization. The principal modes related either to the global structure or to its parts (frame, stringer and skin-panel) are identified.


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    Title :

    Analisi Modale Sperimentale di UN Tronco di Fusoliera di UN Velivolo Turboprop (Experimental Modal Analysis of a Partial Full-Scale Fuselage of Turboprop Aircraft)


    Contributors:
    A. Paonessa (author) / S. Mandarini (author) / L. Lecce (author) / F. Marulo (author)

    Publication date :

    1983


    Size :

    17 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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