Depositing a reasonable amount of power ahead of a body, that is the so‐called ‘energy deposition,’ is promising for drag reduction in high‐speed flows. This paper experimentally demonstrates that by repetitively depositing laser‐pulse energies up to 80 kHz a quasi‐steady‐state active air spike is built up in the bow shock layer, and an efficiency of energy deposition of up to 600% is obtained. The drag decrease is an almost‐linear function with respect to a laser‐pulse repetition frequency.


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    Title :

    Efficient Supersonic Drag Reduction using Repetitive Laser Pulses of up to 80 kHz



    Conference:

    BEAMED ENERGY PROPULSION: Seventh International Symposium ; 2011 ; Ludwigsburg, (Germany)


    Published in:

    AIP Conference Proceedings ; 1402 , 1 ; 424-429


    Publication date :

    2011-11-10


    Size :

    6 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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