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固体冲压式火箭发动机是冲压发动机的一种变种。本研究使用一个带侧向空气道的排放燃烧室。考虑反应流,在燃气发生器中装填了50％高氯酸铵和50％聚酯的富燃推进剂。将κ—ε联立方程描述的湍流模型和一个简单、一步、快速反应的化学动力学总合成椭圆型偏微分方程来描述流场。为了适合所研究的问题,由改进的TEACH计算机程序来求解。基于此分析,更加深入地了解到混合和燃烧对固体冲压式火箭发动机全部性能的影响。将侧向空气进气道的位置移向燃料进气道,减少侧向空气进气道的角度,以及增加空气对燃料的比例,都能改善混合和燃烧特性,提高固体冲压式火箭发动机的比冲,这与Vanka的分析结果和Schadow的试验数据定性地一致。
Solid ramjet engine is a variant of ramjet engine. This study used a discharge combustor with a lateral air duct. Considering the reaction flow, a fuel-rich propellant filled with 50% ammonium perchlorate and 50% polyester in the gas generator was considered. The turbulence model described by the κ-ε simultaneous equations and a simple, one-step, fast-reacting chemical kinetics are combined into an elliptic partial differential equation to describe the flow field. In order to fit the problem studied, solved by the improved TEACH computer program. Based on this analysis, a deeper understanding of the impact of mixing and combustion on the overall performance of a solid ramjet engine was obtained. Moving the position of the side-air inlets to the fuel inlets, reducing the angle of the side-air inlets, and increasing the air-to-fuel ratio all improve mixing and combustion characteristics and increase the ratio of solid ramjet engines Rush, which is qualitatively consistent with Vanka’s analysis and Schadow’s experimental data.