Analysis of the physical and mechanical properties of lunar soil based on the interaction between the "Yutu" No. 2 wheel and the ground. (Photo courtesy of China National Space Administration)
The reporter learned from the China National Space Administration on the 15th that the State Key Laboratory of Robotics technology and systems of Harbin Institute of Technology, the Beijing Aerospace Flight Control Center, the State Key Laboratory of Remote Sensing Science of the Institute of Aerospace Information Of the Chinese Academy of Sciences, the China Academy of Space Technology, and the Ryerson University of Canada and many other units cooperated in publishing a cover paper entitled "Movement and Scientific Exploration on the Far Side of the Moon on the 2nd Anniversary of the "Yutu-2" Lunar Rover" in the internationally renowned academic journal Science Robotics.
The team estimated the mechanical properties of the lunar soil based on the information on the action of the lunar rover wheels and the surface of the moon and the ground mechanical model, and the results showed that the pressure bearing characteristics of the weathering layer of the lunar soil were similar to those of dry sand and sand loam on the earth, and had stronger pressure bearing characteristics than the typical lunar soil in the Apollo program of the United States. In the images of several different locations, it was observed that the wheels of "Yutu-2" were adhered to large clumps of soil, while the wheels of "Yutu" were basically free of clay, indicating that the lunar soil near the Landing Area of Chang'e-4 was more cohesive, which may be due to the inclusion of a higher proportion of agglutinites, making soil particles more likely to reunite by wheel rolling.
The research is based on the mainland lunar exploration mission, oriented to engineering science problems, and the relevant results can provide theoretical and technical support for future lunar exploration missions.
Chang'e-4 rover 41 days before the day travel road map. (Photo courtesy of China National Space Administration)
It is reported that chang'e-4 is currently on the night of the 41st month, the lunar rover has a moving range of 1142.39 meters, and the two instruments and one satellite are in good condition.
Reporters: Song Chen, Yang Siqi
Editor: Li Xiaohu