The classic pressure interaction over a sharp leading edge is a unique feature of hypersonic flow in which the boundary layer interacts strongly with the oncoming stream. The present magnetoaerodynamic actuator is based on the fact that the plasma ignited on a surface can modify the boundary-layer displacement thickness. This electromagnetic perturbation to the flowfield is further amplified by the hypersonic viscous-inviscid interaction to produce a high-surface-pressure plateau on a microsecond scale. The induced surface pressure is an effective hypersonic flow control mechanism. In essence, the minuscule magnetoaerodynamic interaction adiacent to the solid surface is introduced as an added physical mechanism for flow control. The electromagnetic force enhanced inviscid-viscous interaction generates a greater high-pressure regime over the solid surface than that of the classic hypersonic pressure interaction. This plasma actuator is demonstrated by solving the two-dimensional magnetoaerodynamic equation including the Lorentz force and Joule heating. For plasma generated by secondary electronic emission, the well-known ionization formulation for thermal excitation is inapplicable. The drift-diffusion plasma model is adopted to describe the detailed electrodynamic structure of the glow discharge. The idea of a plasma actuator has been supported by preliminary experimental data at a Mach number of five.


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    Titel :

    Magnetoaerodynamic actuator for hypersonic flow control


    Weitere Titelangaben:

    Magnetoaerodynamischer Aktor zur Regelung von Hyperschallströmungen


    Beteiligte:

    Erschienen in:

    AIAA Journal ; 43 , 8 ; 1633-1643


    Erscheinungsdatum :

    2005


    Format / Umfang :

    11 Seiten, 18 Bilder, 21 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Magnetoaerodynamic Actuator for Hypersonic Flow Control

    Joseph Shang / Sergey Surzhikov | AIAA | 2005



    Hypersonic Experimental Facility for Magnetoaerodynamic Interactions

    J. Shang / R. Kimmel / J. Hayes et al. | AIAA | 2005


    Magnetoaerodynamic re-entry

    CAMBEL, A. | AIAA | 1966


    Magnetoaerodynamic drag and flight control

    ERICSON, W. / FALCO, M. | AIAA | 1965