| 摘要: |
| 某上面级主发动机采用常温可贮存液体推进剂，采用泵压式供应方案，依靠起动箱式多次起动系统使发动机具备多次起动工作能力，在轨工作2天。为使发动机温度环境满足工作要求，对发动机进行了热控设计，热控方案采用被动热控措施为主、主动电加热措施为辅以及起动前排放的综合措施。发动机热控设计基于热网络仿真分析法，通过建立整机热分析模型预示发动机任务剖面温度变化，为发动机提供合理的热控设计方案。 |
| 关键词: 多次起动 泵压式 发动机 热控 |
| DOI： |
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| 基金项目: |
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| The Thermal Design Based on Numerical Simulation of the Thermal Control of Turbopump-fed Multi-start Rocket Engine |
| ZHAO Xiao-hui,SHAN Lei,PU Guang-rong,ZHANG Jin-rong |
| (Xi'an Aerospace Propulsion Institute) |
| Abstract: |
| An upper-stage main thruster is turbopump-fed, uses storable propellant with normal temperature and needs to work two days on orbit. By using of multistart tank system, it also has the multi-start capacity. To make the temperature of the engine meet the task, a thermal control system of engine, which consists of three measures: passive thermal design approach primarily，active thermal design approach as an assistant, and pre-cooling the engine by dumping the propellants before start, was designed. The thermal design is based on numerical simulation that predicts the temperature of engine by building the thermal mathematical model, which provides the appropriate thermal control system for engine. |
| Key words: Multi-start Turbopump-fed Engine Thermal contol |