Abstract The flutter characteristic of a highly swept flying wing unmanned aerial vehicle (UAV) is studied for the DLR-F19 concept. The compact geometry, which is based on the SACCON configuration, raises the question whether a coupling between rigid body and elastic modes, known as “body-freedom flutter”, is relevant for this configuration to be a critical flutter phenomenon. The important modes contributing to the various flutter mechanisms are identified by means of the average power of the modal unsteady aerodynamics. Furthermore, aerodynamic methods based on linear potential flow theory (MSC.Nastran DLM and ZAERO ZONA6) and the Euler equations are used to assess the accuracy of fast aerodynamic methods for flutter point prediction of this particular configuration at a low transonic Mach number of 0.8. The BFF phenomenon is further examined by modifying the mass and stiffness distributions of the configuration.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Assessment of body-freedom flutter for an unmanned aerial vehicle


    Contributors:
    Schäfer, D. (author) / Vidy, C. (author) / Mack, C. (author) / Arnold, J. (author)

    Published in:

    CEAS Aeronautical Journal ; 10 , 3 ; 845-857


    Publication date :

    2018-12-13


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Assessment of body-freedom flutter for an unmanned aerial vehicle

    Schäfer, D. / Vidy, C. / Mack, C. et al. | Online Contents | 2018



    Unmanned aerial vehicle body and unmanned aerial vehicle

    LEI CHENGZHI / JING KUNPENG / XU LIJUN | European Patent Office | 2024

    Free access

    Unmanned aerial vehicle body and unmanned aerial vehicle

    FAN XINLIN / LI XIAOLIANG / TIAN GANGYIN | European Patent Office | 2023

    Free access

    Unmanned aerial vehicle body and unmanned aerial vehicle

    WU SHAOQIANG / WEI SHITIE / WEN HAIJUN | European Patent Office | 2024

    Free access