Volume 30 Issue 10
Oct.  2015
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Article Navigation >  Journal of Aerospace Power  > 2015  >  30(10): 2553-2560
LIU Wei-kai, HE Guo-qiang, WANG Chun-guang. Research on the pressure oscillation characteristics ofdouble pulse solid rocket motor[J]. Journal of Aerospace Power, 2015, 30(10): 2553-2560. doi: 10.13224/j.cnki.jasp.2015.10.031
Citation: LIU Wei-kai, HE Guo-qiang, WANG Chun-guang. Research on the pressure oscillation characteristics ofdouble pulse solid rocket motor[J]. Journal of Aerospace Power, 2015, 30(10): 2553-2560. doi: 10.13224/j.cnki.jasp.2015.10.031
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Research on the pressure oscillation characteristics ofdouble pulse solid rocket motor

doi: 10.13224/j.cnki.jasp.2015.10.031

  • 1. Science and Technology on Combustion, Internal Flow and Thermal-Structure Laboratory, School of Astronautics, Northwestern Polytechnical University, Xi'an 710072;

  • 2. Xi'an Aerospace Propulsion Institute, Academy of Aerospace Solid Propulsion Technology, China Aerospace Science and Technology Corporation, Xi'an 710025, China

  • Received Date: 2014-04-13
  • Publish Date: 2015-10-28
    Abstract
  • In order to reveal the relationship between the melting of pulse separation device (PSD) and the pressure oscillation, several melting moments were selected for research. Large eddy simulation (LES) was carried out for the numerical simulation of II pulse flow field, and the pressure-time curve and fast Fourier transformation (FFT) results were obtained successfully.The analysis results show that the additional disturbance in the flow field generated by opening PSD when the Ⅱ pulse is working, and the acceleration of interstage narrow channel, are the main factors to obstacle vortex shedding caused by boundary layer separation. In the early ignition, the double pulse motor (DPM)is prone to slight pressure oscillation. With the PSD melting, the whole flow field becomes more and more stabilized.

     

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