The present paper presents recent (original) and previous experimental results on the Laser‐Supported Directed Energy “Air Spike” — DEAS in hypersonic flow achieved by the Laboratory of Aerothermodynamics and Hypersonics — LAH, Brazil. A CO2 TEA laser has been used in conjunction with the IEAv 0.3m Hypersonic Shock Tunnel — HST to demonstrate the Laser‐Supported DEAS concept. A single laser pulse generated during the tunnel useful test time was focused through a NaCl lens ahead of an aluminum hemisphere‐cylinder model fitted with a piezoelectric pressure transducer at the stagnation point. In the more recent experiments, the simple hemisphere‐cylinder model was substituted by a Double Apollo Disc model fitted with seven piezoelectric pressure transducers and six platinum thin film heat transfer gauges. The objective being to corroborate the past results as well as to obtain additional pressure distribution information and new heat transfer data.


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    Title :

    Brazilian Activities On The Laser‐Supported DEAS In Hypersonic Flow


    Contributors:

    Conference:

    BEAMED ENERGY PROPULSION: First International Symposium on Beamed Energy Propulsion ; 2002 ; Huntsville, Alabama (USA)


    Published in:

    AIP Conference Proceedings ; 664 , 1 ; 497-508


    Publication date :

    2003-05-14


    Size :

    12 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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