A set of magnetohydrodynamic (MHD) aerobraking experiments was conducted with the aim of simulating the Earth reentry environment for Mars return trajectories, and to study the effects of MHD flow control on the ionizing shock layer surrounding a planetary entry vehicle. The X2 expansion tube of the University of Queensland was used, which could provide realistic flowfield boundary conditions, where ionization is spontaneously generated within the shock layer as in true flight and the freestream is nonconducting. Suitable flow conditions providing strong MHD interaction at superorbital Earth reentry velocities were developed. Steel ball and neodymium permanent magnet models were tested, both uncoated and coated with electrically insulating high-temperature epoxy. Shock-layer high-speed imaging showed a significant increase in shock standoff distance for the magnetic models. The experimental shock standoff results generally agreed well with analytical and numerical shock standoff predictions. These experiments demonstrate that a strong MHD interaction can be generated for a Mars return trajectory with moderate magnetic field strengths. Furthermore, they provide a promising framework for future MHD aerobraking experiments to investigate MHD drag force and heat-flux mitigation.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Expansion Tube Experiments of Magnetohydrodynamic Aerobraking for Superorbital Earth Reentry


    Beteiligte:

    Erschienen in:

    AIAA Journal ; 59 , 8 ; 3228-3240


    Erscheinungsdatum :

    01.08.2021




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Correction: Expansion Tube Experiments of Magnetohydrodynamic Aerobraking for Superorbital Reentry

    Lefevre, Alexis / Gildfind, David E. / Gollan, Rowan J. et al. | AIAA | 2023



    Magnetohydrodynamic Experiments of Total Heat Flux Mitigation for Superorbital Earth Reentry

    Lefevre, Alexis / Gildfind, David E. / Gollan, Rowan J. et al. | AIAA | 2022


    Correction: Magnetohydrodynamic Experiments of Total Heat Flux Mitigation for Superorbital Earth Reentry

    Lefevre, Alexis / Gildfind, David E. / Gollan, Rowan J. et al. | AIAA | 2023