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Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (8): 1789-1802.doi: 10.3969/j.issn.1000-1093.2021.08.024

• Comprehensive Review • Previous Articles     Next Articles

Review on Performance Evaluation of Solid Rocket Motors with Charge Defects

GAO Feng, ZHANG Ze   

  1. (Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, Shaanxi, China)
  • Online:2021-09-15

Abstract: The charge defect is an important factor affecting the safe work of solid rocket motors (SRM). In order to ensure safe launch, the deviation of the SRM performance caused by the charge defects needs to be analyzed to evaluate the working performance of SRM. In view of the complexity of the behavior of charge defects, a complete evaluation system has not been established. For the behavior of SRM charge defects, the theoretical and experimental research methods of crack and debonding propagation are reviewed, including the research on the crack initiation criterion, the factors affecting the growth and the fracture performance of propellant material. The research status of the interaction mechanism between grain crack and gas is reviewed from two aspects: the boundary conditions of gas entering the crack and the influence of gas propagation on the crack propagation. In order to achieve the purpose of numerical simulation of complete working process of SRM with charge defects, the research on its numerical calculation methods is summarized and analyzed from combustion surface regression calculation method, fluid-heat-solid coupling calculation method and defect propagation calculation method. The numerical index of the working performance of SRM with charge defects is expected to be obtained, which will be used as a reference for performance evaluation of SRM with charge defects. Finally, the development in the research on the behavior of charge defects and numerical calculation methods is prospected.

Key words: solidrocketmotor, chargedefect, interiorballistic, crackpropagation, numericalsimulation, performanceevaluation

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