Different levels of structural modeling fidelity are evaluated against experimental results for the local aeroelastic stability boundaries of an internally pressurized circular cylindrical shell. Finite-element analysis is used to inform a modal approach taken to model the structural dynamics. Third-order piston theory is used to model the external and internal surfaces’ unsteady aerodynamic pressures. Results are used to drive model improvements of free-flight aerothermoelastic simulation in order to predict aeroelastic instabilities in a representative supersonic/hypersonic vehicle. The stability of a finite-element cylindrical structure when inclined to the flow is also considered to inform future work in which a cylindrical high-speed vehicle is required to perform maneuvers.


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    Titel :

    Local Aeroelastic Instability of High-Speed Cylindrical Vehicles


    Beteiligte:

    Erschienen in:

    AIAA Journal ; 57 , 6 ; 2553-2561


    Erscheinungsdatum :

    2019-03-21


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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