我国月球无人自动采样返回探测技术发展成就OA北大核心CSTPCD

To achieve lunar unmanned automatic sampling and return,China conducted one lunar sampling and return mission in both the 3rd Phase and the 4th Phase of the Lunar Exploration Program,successfully accomplishing unmanned automatic sampling and return from both the near and far sides of the Moon,with a total of 3.666kg of lunar samples collected from two mis-sions.This paper elaborates on the main challenges and characteristics of China's two lunar ro-botic sampling and return missions,focuses on the overall probe design schemes,presents the in-orbit flight results.Multiple technical achievements are summarized,including overall design of lunar robotic sampling and return missions,lunar surface sampling and packing,lift-off from lunar surface,lunar orbital rendezvous and docking with sampling transfer,Moon-Earth trajectory insertion,high-speed reentry with lunar sample,complex system assembly,integration and test,ground test system construction and so on.