摘要
研究承担进入任务的升阻比小于0.5的小升阻比航天器,基于对该类航天器大气进入制导方法的调研,分别以地球大气再入和火星大气进入过程为例,分析了进入制导需满足的各种约束和待解决的技术难题,并对大气进入制导控制方法的研究现状进行了阐述,对不同方法的优缺点进行了对比研究分析和归纳总结,对未来研究发展方向进行了展望。
The entry vehicle researched in this paper is a low lift-to-drag ratio spacecraft. Its lift-to-drag ratio is smaller than 0. 5. Based on the survey of atmospheric entry guidance techniques for low lift-to-drag ratio spacecraft,firstly the required constraint conditions and the challenges encountered in the earth and Mars atmospheric entry guidance process are analyzed. Then the algorithms for atmospheric entry guidance are summarized. Simultaneously the merits and drawbacks of the different guidance algorithms are compared and analyzed. Finally,the difficulties and future research directions of entry guidance techniques are forecasted.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2015年第1期1-8,共8页
Journal of Astronautics
基金
国家重点基础研究发展计划项目(2012CB720005)
关键词
小升阻比航天器
大气进入
制导
Low lift-to-drag ratio spacecraft
Atmospheric entry
Guidance
