重复使用运载火箭液体动力技术发展

Development of liquid propulsion technologyfor reusable launch vehicle

重复使用是未来运载火箭更新换代的技术发展趋势,是降低航天发射成本、实现规模化航天发射的有效途径。重点概述了国内外垂直起降重复使用运载火箭动力技术的发展现状,分析了垂直起降重复使用运载火箭发射和回收全任务剖面,总结了垂直起降重复使用运载火箭动力技术的特点,包括宽范围入口压力多次启动技术、大范围快速高精度推力调节技术、故障诊断及健康管理技术、状态检测与维修维护技术等。

Reusability is the technological development trend of launch vehicle in the future,and it is an effective way to reduce the cost of space launch and achieve large-scale space launch.This paper summarizes the development status of vertical take-off and vertical landing reusable launch vehicle power technology at home and abroad.The full mission process of rocket launch and recovery using aerodynamic deceleration and power deceleration was discussed,and the characteristics of power technology of reusable launch vehicle were summarized.The key technologies including wide-range inlet pressure multi-start technology,large-scale rapid and high-precision thrust regulation technology,fault diagnosis and health monitoring technology and maintenance technology were analyzed and so on.