Volume 35 Issue 6
Jun.  2020
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YE Qing, SHU Yan, ZHANG Xuhui. Research on simulation and test of vacuum plume diversion technique based on vehicles taking off outside the earth[J]. Journal of Aerospace Power, 2020, 35(6): 1266-1274. doi: 10.13224/j.cnki.jasp.2020.06.017
Citation: YE Qing, SHU Yan, ZHANG Xuhui. Research on simulation and test of vacuum plume diversion technique based on vehicles taking off outside the earth[J]. Journal of Aerospace Power, 2020, 35(6): 1266-1274. doi: 10.13224/j.cnki.jasp.2020.06.017

Research on simulation and test of vacuum plume diversion technique based on vehicles taking off outside the earth

doi: 10.13224/j.cnki.jasp.2020.06.017
  • Received Date: 2020-02-09
  • Publish Date: 2020-06-28
  • In view of the problem of limitations on engine plume diversion, based on engineering experiences, four typical molding surfaces of diversion devices (including form of inner groove and form of diversion cone) were proposed to carry out numerical simulation of the aerodynamic and aerothermal effects caused by plume diversion during take-off using the coupling simulation method of computational fluid dynamics (CFD) and direct simulation of Monte Carlo (DSMC), and analyze the plume field shock wave and spacecraft surface pressure and heat flow density distribution law, thereupon the evaluation on diversion effects of the four diversion devices was presented, and finally tests in the form of diversion core were conducted to verify the simulation algorithm. The result show that the engine is stable with the plume diversion, the scheme of the large diversion core is optimal considering the spacecraft plume and engine safety, the shock near the diversion core is the same as the simulation, the variation trend of simulation and test is consistent, the algorithm is credible and the law can be applied in engineering.

     

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