Due to high heat transfer rates in hypersonic flight and its consequent necessity of prohibitively massive thermal protection system, new methods of flow control are required to enable flight in such regimes. Here arises the Direct Energy Air Spike concept, where electromagnetic energy (laser/microwaves) is focalized upstream of the model causing the breakdown of the air and the generation of a Laser Supported Detonation wave which diverts the incoming stream parabolically. In this preliminary work, the heat transfer rates to the surface of a blunt body, downstream the laser induced shock wave, were qualitatively measured and compared with the results without the DEAS. These measurements were conducted with the use of fast response coaxial thermocouples and piezoelectric pressure transducers installed on the surface of the model in the 0.30m IEAv’s T2 Hypersonic Shock Tunnel. The laser energy was supplied by a CO2 TEA Laser.


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    Title :

    Experimental Analysis of Heat Flux to a Blunt Body in Hypersonic Flow with Upstream Laser Energy Deposition — Preliminary Results



    Conference:

    BEAMED ENERGY PROPULSION: Fourth International Symposium on Beamed Energy Propulsion ; 2005 ; Nara (Japan)


    Published in:

    AIP Conference Proceedings ; 830 , 1 ; 163-171


    Publication date :

    2006-05-02


    Size :

    9 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Experimental Analysis of Heat Flux to a Blunt Body in Hypersonic Flow with Upstream Laser Energy Deposition-Preliminary Results

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    Hypersonic Flow Control Using Upstream Focused Energy Deposition

    Riggins, D. W. / Nelson, H. F. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 1999



    Hypersonic Flow Control Using Upstream Focused Energy Deposition

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    Blunt Body in Hypersonic Electromagnetic Flow Field

    Shang, J. S. / Hayes, J. / Miller, J. et al. | British Library Conference Proceedings | 2001