The YF-12A aircraft, a delta-winged vehicle powered by two jet engines, was utilized in an investigation of the structural dynamic characteristics of a large, flexible, supersonic research vehicle. A large NASA structural analysis (NASTRAN) finite-element model was used to compute the ten lowest frequency symmetric and ten lowest frequency antisymmetric modes for the YF-12A aircraft. The results of the analysis were compared with experimental data obtained in a ground vibration test conducted with the completed aircraft. It was found that the finite-element structural model employed provides an adequate prediction of the dynamic behavior of the aircraft structure in the case of basic wing and body modes.


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    Title :

    Results of NASTRAN modal analyses and ground vibration tests on the YF-12A airplane


    Contributors:

    Conference:

    Winter Annual Meeting ; 1975 ; Houston, TX


    Publication date :

    1975-11-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English





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    Wilson, R. J. / Cazier, F. W., Jr. / Larson, R. R. | NTRS | 1973



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