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Acta Armamentarii ›› 2020, Vol. 41 ›› Issue (2): 298-304.doi: 10.3969/j.issn.1000-1093.2020.02.011

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Experimental Research on the Influence of Ablation Product of Carbon Fiber Reinforced Composite Material on the PlasmaFlow Field Characteristics

YUAN Ye1, WANG Liyan1, CAO Zhanwei1, NIE Chunsheng1, NIE Liang1, MA Haojun2   

  1. (1.Science and Technology on Space Physics Laboratory, China Academy of Launch Vehicle Technology, Beijing 100076, China;2.Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China)
  • Received:2019-03-01 Revised:2019-03-01 Online:2020-04-04

Abstract: The thermal protection material of high speed flight vehicle would be ablated and release the plasma under the high temperature induced by aerodynamic heating. In order to study the influence of ablation products of carbon fiber reinforced composite material on the flow field characteristics in different conditions of ablation, the high speed plasma jets were established through the ablation of two kinds of carbon fiber reinforced composite thermal protection materials (C/C and C/ZrC) in high frequency plasma wind tunnel. The number density of electrons and the stagnation point heat flux downstream were acquired using Langmuir probe and calorimeter in different conditions of ablation. The results show that the number density of electrons and the stagnation point heat flux in the flow field decrease with the increase in the ablation rate, relieving the “black-out” and aerothermal heating. C/ZrC is superior to C/C in weakening the ionization and the enthalpy of the flow field. With the increase in the enthalpy of the incoming flow, the differences in the ionization and enthalpies of the flow fields induced by the ablation of C/C and C/ZrC decrease to some extent.Key

Key words: carbonfiberreinforcedcompositematerial, ablation, plasma, flowfieldcharacteristic

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