摘要
通过对国内外上面级动力系统技术现状与发展趋势进行分析,提出开展上面级提高启动次数、延长在轨时间研制需求。采用液体推进剂启动箱启动的泵压式主发动机方案,可实现泵压式发动机空间多次启动;采用启动篮方案,可实现长时间滑行多次启动推进剂管理。研究结果表明:多次启动、长期在轨泵压式动力系统使上面级的性能和任务适应性得到全面提升。
The technique situation and development tendency of upper stage propulsion system developed at home and aboard is analyzed. The multiple ignitions and long duration in orbit is required. A liquid propellant start box for turbo-pump engine is adopted to achieve multiple ignitions. A start basket propellant management device is adopted to realize propellant management in long duration of orbit. Due to these measures, the performance and flexibility of the upper stage are improved.
引文
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