Abstract The flying wing has an unconventional aerodynamic configuration with many advantages over traditional aerodynamic configurations. However, due to the light weight and flexibility of the flying wing structure, the aeroelastic problem is more significant. In the flutter analysis, it is found that the short-period mode of the flying wing is coupled with the bending mode of the wing that leads to flutter instability, which is called body freedom flutter. In order to study the body freedom flutter, This paper introduces two typical test cases. We use MSC.Patran to establish the finite element structural dynamic model of the flying wing and use MSC.Nastran for modal analysis. The aerodynamic lifting surface model of the flying wing is built in MSC.Flightloads. The flutter characteristics of the model are calculated by MSC.Nastran, and the flutter speed and frequency under the different stiffness are obtained. Finally, comparative analysis was performed using ZAERO software.


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    Title :

    Body Freedom Flutter Investigation Using Different Commercial Softwares


    Contributors:
    Xie, Ke (author) / Gu, Yingsong (author) / Liu, Jihai (author) / Shi, Pengtao (author)


    Publication date :

    2019-01-01


    Size :

    7 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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