A flat‐roofed parabolic nozzle is adopted to study the multi‐pulse laser propulsion performance. The multi‐pulse impulse coupling coefficient decreases when the laser repetition rate increases in the range of 10 to 400 Hz. The details of the evolution process of the inner and outer flow fields are simulated. The results indicate that the air exhaust and refill processes influence multi‐pulse propulsion performance directly. By comparing the initial and multi‐pulse flow fields, the air in the nozzle is found to be partially recovered. An uneven low‐density distribution and the mass loss result in a decrease in C m when the pulse number increases. Moreover, breathing in air to the nozzle for multi‐pulse when the focal position is near the exit is beneficial.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Numerical Analysis of Laser Repetition Rate and Pulse Numbers in Multi‐pulsed Laser Propulsion


    Contributors:

    Conference:

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


    Published in:

    AIP Conference Proceedings ; 1402 , 1 ; 296-305


    Publication date :

    2011-11-10


    Size :

    10 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Numerical analysis of laser repetition rate and pulse numbers in multi-pulsed laser propulsion

    Song, J. / Hong, Y. / Wen, M. et al. | British Library Conference Proceedings | 2011


    Pulsed laser propulsion

    NEBOLSINE, P. E. / PIRRI, A. N. / GOELA, J. S. et al. | AIAA | 1981


    Pulsed shaping high-energy fiber laser at low repetition rate

    Wan, Peng / Liu, Jian / Yang, Lih-Mei et al. | SPIE | 2011


    Numerical Study of Laser-Induced Pulsed Airbreathing Propulsion

    Choi, Jeong-Yeol / Sasoh, Akihiro / Jeung, In-Seuck | AIAA | 2002


    Pulsed Laser Propulsion Experiments

    Schall, Wolfgang O. | AIAA | 2003