It is desirable to predict the resonant frequencies and mode shapes of extremely high-aspect ratio wings for high-altitude/long-endurance applications. Such results give insight into structural response and serve as a precursor to flutter and gust response calculations. The influence of rigid body modes has been shown to be significant for the aeroelastic response of these aircraft, but this effect is frequently not captured in a laboratory setting. Additionally, resonant frequencies can be difficult to predict when multiple discrete masses such as engines or mission pods are distributed along the span. In this work, the resonant frequencies of a high-altitude/long-endurance wing mounted on a spring of variable stiffness with both root and tip stores are determined analytically from classical beam theory. The model is then extended through a component-mode synthesis to incorporate multiple spanwise masses of any discrete distribution. Computational results are compared with an experiment, and good agreement is shown.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Resonant Frequency Determination of a Multistore High-Altitude/Long-Endurance Wing


    Contributors:

    Published in:

    AIAA Journal ; 51 , 6 ; 1277-1283


    Publication date :

    2013-04-25


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Wing Development for High Altitude, Long Endurance Flight

    Steinbuch, M. / Koss, D. / Shepshelovich, M. et al. | British Library Conference Proceedings | 1995


    High-altitude long-endurance unmanned aerial vehicle wing suitable for single-wing layout

    XIAO LIANGHUA / CAO SHIKUN / FENG WENLIANG et al. | European Patent Office | 2020

    Free access

    Aeroelastic Analysis of a High-Altitude Long-Endurance Joined-Wing Aircraft

    Snyder, Richard / Hur, JiYoung / Strong, Daniel et al. | AIAA | 2005