Flow visualization of laser energy addition upstream blunt bodies in hypersonic flow was achieved by means of open shutter photography and high‐speed cameras techniques. The laser energy was supplied by two CO2 TEA lasers, sharing the same optical cavity, while the hypersonic flow was generated in the IEAv 0.3m Hypersonic Shock Tunnel — HST test section. Single and double laser pulses, generated during the tunnel useful test time, were focused through a NaCl lens upstream a simple hemisphere‐cylinder and Double Apollo Disc models. A regular SLR camera, a high‐speed CCD camera and an ultra‐high speed electronic tube camera provided imaging. Preliminary results using the ultra‐high speed camera in a shadowgraph/schlieren arrangement revealed the dynamic complex flow structure that is established during the addition of the laser energy to the hypersonic flow upstream a blunt body.


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    Title :

    Flow Visualization of Laser‐Induced Air Spikes in Hypersonic Flow



    Conference:

    BEAMED ENERGY PROPULSION: Third International Symposium on Beamed Energy Propulsion ; 2004 ; Troy, New York (USA)


    Published in:

    AIP Conference Proceedings ; 766 , 1 ; 514-527


    Publication date :

    2005-04-27


    Size :

    14 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Flow Visualization of Laser-Induced Air Spikes in Hypersonic Flow

    Minucci, M. A. S. / Toro, P. G. P. / Oliveira, A. C. et al. | British Library Conference Proceedings | 2005



    Drag on blunt bodies with and without spikes in low-density hypersonic flow

    BOYLAN, D. E. / HAHN, J. S. / SIMS, W. H. | AIAA | 1965


    Flow visualization of a low density hypersonic flow field

    MASSON, B. / JUMPER, E. / WALTERS, E. et al. | AIAA | 1989


    Schlieren Visualization Technique Applied to the Study of Laser‐Induced Breakdown in Low Density Hypersonic Flow

    Oliveira, A. C. / Minucci, M. A. S. / Toro, P. G. P. et al. | American Institute of Physics | 2006