A set of experiments was conducted with the aim of evaluating total heat flux mitigation using magnetohydrodynamic flow control over ionized shock layers surrounding planetary entry vehicles. The University of Queensland’s X2 expansion tube was used to generate a flow condition representative of a Mars return trajectory. Spherical permanent magnets were fitted into a scaled test model based on NASA’s Stardust capsule. Thermocouples located at the stagnation point and shoulder of the test model, as well as thin-film heat transfer gauges located in the aft section, measured total heat flux for both magnetic and nonmagnetic experiments. High-speed imaging of the shock layer showed a significant increase in shock standoff when using the magnet, and polynomial fits were derived, describing standoff distance along the model’s forebody. Despite significant noise affecting the heat flux gauges signals for the magnetic experiments, a simple methodology allowed to compare heat flux during the useful test time. It was found that the applied magnetic field significantly reduces total heat flux at the stagnation point and shoulder of the test model, although heat flux to the aft section was found to significantly increase. Reasonable agreement with the numerical predictions was found for the aft section of the test model, but discrepancies were observed at the other locations.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Magnetohydrodynamic Experiments of Total Heat Flux Mitigation for Superorbital Earth Reentry


    Beteiligte:

    Erschienen in:

    AIAA Journal ; 60 , 9 ; 5046-5059


    Erscheinungsdatum :

    2022-06-08


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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

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




    Expansion Tube Experiments of Magnetohydrodynamic Aerobraking for Superorbital Earth Reentry

    Lefevre, Alexis / Gildfind, David E. / Gollan, Rowan J. et al. | AIAA | 2021