嫦娥五号探测器GNC系统设计

为实现我国首次月球样品无人采样返回任务，设计了嫦娥五号(Chang’E 5)探测器制导、导航与控制(GNC)系统.根据任务要求和探测器特点，GNC系统设计分为轨道器GNC子系统、返回器GNC子系统和着上组合体GNC子系统.给出了嫦娥五号探测器GNC系统的架构设计、工作模式以及在轨飞行结果.结果表明，GNC系统设计正确，成功完成了动力下降、起飞上升、交会对接、返回再入等关键动作，实现了月球表面起飞上升、月球轨道交会对接以及携带月壤以近第二宇宙速度二次再入返回的三项首次任务，各项功能性能满足任务要求.

Chang'E-5 Guidance,Navigation,and Control System Design

The Chang’E 5 (CE 5) guidance, navigation, and control (GNC) system is designed to reacize China’s first lunar sample collection and return mission. Based on the mission requirements and spacecraft characteristics, the GNC system is designed as a combination of three subsystems, which are the orbiter GNC subsystem, the returner GNC subsystem, and the lander and ascender module GNC subsystem. The CE 5 GNC system architecture design, working mode design and onboard flight results are presented. According to the flight results, the GNC system design is correct. Some key actions have been successfully performed, such as powered descent, taking off from lunar surface, rendezvous and docking, and reentry into the earth. Particularly, three missions are first realized, including the taking off from the lunar surface, rendezvous and docking on the lunar orbit, and reentry into the earth with lunar samples. The flight results also show that each system performance index meets the mission requirements.