Volume 31 Issue 12
Dec.  2016
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FANG Xin-xin, SHEN Chi-bing, ZHANG Xin-qiao. Experiment of breakup characteristics on conical sheets of pintle injectors[J]. Journal of Aerospace Power, 2016, 31(12): 3004-3009. doi: 10.13224/j.cnki.jasp.2016.12.024
Citation: FANG Xin-xin, SHEN Chi-bing, ZHANG Xin-qiao. Experiment of breakup characteristics on conical sheets of pintle injectors[J]. Journal of Aerospace Power, 2016, 31(12): 3004-3009. doi: 10.13224/j.cnki.jasp.2016.12.024

Experiment of breakup characteristics on conical sheets of pintle injectors

doi: 10.13224/j.cnki.jasp.2016.12.024
  • Received Date: 2015-07-03
  • Publish Date: 2016-12-28
  • The fragmenting images of surface wave of a pintle injector in different injection pressure drops and structural parameters were obtained using high-speed photography, and the breakup length and breakup time of the conical sheets were measured. Moreover, the variations of the breakup length and breakup time in different operating conditions of the pintle injector were analyzed. According to the experimental results, the mass flow rate of the pintle injector can achieve linear variation in the condition of constant injection pressure drop. When designing a pintle injector, the slit width should be chosen as small as possible within the reasonable range of momentum ratio of propellants. The conical sheets breakup more quickly in the low working condition. In addition, both of the breakup length and breakup time of the conical sheets reduce along with increase of injection pressure drop.

     

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