动力冗余技术对全箭可靠性影响研究  

The Research on the Influence of Redundant Propulsion Technology on the Reliability of Launch Vehicle

作　　者：秦曈 李彩霞 容易 秦旭东 张智[2] Qin Tong;Li Cai-xia;Rong Yi;Qin Xu-dong;Zhang Zhi(Beijing Institute of Astronautical Systems Engineering,Beijing,100076;China Academy of Launch Vehicle Technology,Beijing,100076)

机构地区：[1]北京宇航系统工程研究所,北京100076 [2]中国运载火箭技术研究院,北京100076

出　　处：《导弹与航天运载技术》2020年第5期48-53,共6页Missiles and Space Vehicles

摘　　要：为了论证动力冗余技术对全箭可靠性提升的作用以及采用动力冗余技术的必要性,通过介绍苏联N-1火箭、美国土星系列火箭、航天飞机以及法尔肯系列火箭动力冗余应用的情况,针对"多台数、小推力"的情况,提出了单台发动机故障引起系统故障的故障风险系数以及在执行动力冗余策略过程中失效的冗余风险系数,分析了在故障风险系数和冗余风险系数下,采用动力冗余技术对系统可靠性的影响。By introducing the application of redundant propulsion technology in N-1 of Soviet Union,Saturn Series,Space Shuttle and Falcon Series of United States,the role of redundant propulsion technology in improving the reliability of the launch vehicle and the necessity of applying this technology are demonstrated.According to the situation of’multiple units and small thrust’,the failure risk factor which represents the system failure caused by single engine lost and the redundant risk factor which represents the system failure during the implementation of redundant propulsion strategy are proposed.The influence of redundant propulsion technology on system reliability is also analyzed by considering the two factors.

关 键 词：系统故障 动力冗余 风险系数 

分 类 号：V475.1[航空宇航科学与技术—飞行器设计]