One of the technical challenges in long-duration space exploration and interplanetary missions is controlled entry and re-entry into planetary and Earth atmospheres, which requires the dissipation of considerable kinetic energy as the spacecraft decelerates and penetrates the atmosphere. Efficient heat load management of stagnation points and acreage heating remains a technological challenge and poses significant risk, particularly for human missions. An innovative approach using active flow control concept is proposed to significantly modify the external flow field about the spacecraft in planetary atmospheric entry and re-entry in order to mitigate the harsh aerothermal environments, and significantly weaken and disperse the shock-wave system to reduce aerothermal loads and wave drag, as well as improving aerodynamic performance. To explore the potential benefits of this approach, we conducted fundamental experiments in a trisonic blow down wind tunnel to investigate the effects of counterflowing sonic and supersonic jets against supersonic freestreams to gain a better understanding of the flow physics of the interactions of the opposing flows and the resulting shock structure.


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    Title :

    Observations of Shock Diffusion and Interactions in Supersonic Freestreams with Counterflowing Jets



    Conference:

    AIAA/AHI 14th International Space Planes and Hypersonics Systems and Technologies Conference ; 2006 ; Canberra, Australia


    Publication date :

    2006-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Dynamics of shock dispersion and interactions in supersonic freestreams with counterflowing jets

    Daso, Endwell O. / Pritchett, Victor E. / Wang, Ten-See et al. | Tema Archive | 2009


    Dynamics of Shock Dispersion and Interactions in Supersonic Freestreams with Counterflowing Jets

    Daso, Endwell O. / Pritchett, Victor E. / Wang, Ten-See et al. | AIAA | 2009


    The Dynamics of Shock Dispersion and Interactions in Supersonic Freestreams with Counterflowing Jets

    Daso, Endwell / Pritchett, Victor / Wang, Ten-See et al. | AIAA | 2007



    The Dynamics of Shock Dispersion and Interactions in Supersonic Freestreams with Counterflowing Jets AIAA Paper

    Daso, E. / Pritchett, V. / Wang, T. et al. | British Library Conference Proceedings | 2007