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Chinese Journal of High Pressure Physics  > 2014  >  28(2): 191-196.
LI Long, WANG Bo, TANG Zhi-Ping, HU Xiao-Jun. Effect of Nozzle Length on the Propulsion Performance of a Cylindrical Thruster[J]. Chinese Journal of High Pressure Physics, 2014, 28(2): 191-196. doi: 10.11858/gywlxb.2014.02.009
Citation: LI Long, WANG Bo, TANG Zhi-Ping, HU Xiao-Jun. Effect of Nozzle Length on the Propulsion Performance of a Cylindrical Thruster[J]. Chinese Journal of High Pressure Physics, 2014, 28(2): 191-196. doi: 10.11858/gywlxb.2014.02.009
shu

Effect of Nozzle Length on the Propulsion Performance of a Cylindrical Thruster

doi: 10.11858/gywlxb.2014.02.009
  • 1.

    Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China

  • 2.

    China Academy of Engineering Physics, Mianyang 621999, China

  • Received Date: 19 Mar 2012
  • Rev Recd Date: 08 Jul 2012
    Abstract
  • "Ablation mode" laser propulsion works on the counterforce generated during the interaction between high-power laser and propellant carried by thruster.The structural geometry of the nozzle of "ablation mode" laser propulsion thruster has important influence on the propulsion performance.The effect of nozzle length L on propulsion performance was carried out by experiment and numerical simulation.Experimental results indicate that both the momentum coupling coefficient and the specific impulse increase as L increases, but the increasing tendency of momentum coupling coefficient slows down with the increase of L.Considering the effects of both propulsion parameters and weight of thruster, the formula of optimal length of nozzle is derived with the largest velocity increment of the thruster.The thrust-time curves and impulse-time curves are obtained by numerical study using software FLUENT.The simulation results agree with the experimental results.

     

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