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为满足膨胀循环液体火箭发动机高性能和高可靠的研制要求,在氢涡轮泵方案的选择上采用了径流式氢涡轮方案。通过一维热力和三维结构设计,初步验证了径流式氢涡轮应用可行性。借助于CFD分析软件,完成了该涡轮设计工况全三维粘性数值模拟,证明性能满足指标要求。通过强度优化设计和轴向力平衡两方面研究,突破了涡轮泵应用的两大技术难点。结合该涡轮介质试验及发动机热试车考核情况,得出径流式涡轮能够应用于膨胀循环发动机氢涡轮泵的结论。
In order to meet the high performance and high reliability requirements of the expansion cycle liquid rocket engine, a radial turbine scheme was adopted in the selection of the hydrogen turbine pump scheme. Through one-dimensional thermal and three-dimensional structural design, preliminary feasibility study of radial turbine application. With the aid of CFD analysis software, the full three-dimensional viscous numerical simulation of the turbine design condition was completed, which proved that the performance meets the index requirements. Through the optimization of strength design and axial force balance of both research, breaking the turbo pump application of the two major technical difficulties. Combined with the turbo medium test and engine heat test, we conclude that the radial turbine can be applied to the expansion turbine hydrogen turbine pump.