In-situ mechanical static sounding method for lunar soil carried by lunar rover

The lunar soil in-situ mechanical static penetrometer system carried by the lunar rover has solved the problem of accurate measurement in lunar soil in-situ mechanical exploration. It has achieved accurate acquisition of lunar soil cohesion and internal friction angle. The system is miniaturized and has low energy consumption, making it suitable for direct mounting on the lunar rover. This simplifies the operation process and improves the reliability and accuracy of the exploration.

CN121595302APending Publication Date: 2026-03-03INST OF MECHANICS CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202511941011.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-22
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

Existing technologies are insufficient for accurate measurement of in-situ mechanical properties of lunar soil. The detection depth is limited and the data accuracy is low, making it impossible to effectively obtain key mechanical parameters such as cohesion and internal friction angle of lunar soil.

Method used

The lunar rover-borne in-situ static penetrometer system for lunar regolith, comprising a penetrometer, a drilling subsystem, a data acquisition subsystem, and an electrical control and management subsystem, acquires the mechanical parameters of the lunar regolith through penetration and rotational shearing. Computer equipment is used to construct mechanical equations to interpret the cohesion and internal friction angle of the lunar regolith.

Benefits of technology

It has achieved precise measurement of key mechanical parameters such as lunar soil cohesion and internal friction angle. The system is small, lightweight, and low-energy, making it suitable for direct mounting on lunar rovers, simplifying the operation process and improving the reliability and accuracy of the exploration.

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Abstract

The invention relates to a lunar vehicle carried lunar soil in-situ mechanical static sounding method. A lunar soil in-situ mechanical static sounding method carried by a lunar rover comprises the steps that drilling power and rotation torque are obtained through a drilling subsystem, resistance characteristic data of lunar soil are obtained through a mechanical sensor of a static sounding instrument, and the resistance characteristic data of the lunar soil are obtained through the rotation torque generated when the lunar soil is sheared through rotation of the drilling subsystem. The method comprises the following steps: calculating a shearing acting force generated by shearing lunar soil by a static penetrometer, obtaining shearing characteristics of the lunar soil through a theoretical model of rotation torque and the shearing acting force, and constructing a mechanical equation of penetration resistance, rotation torque, lunar soil cohesion c and an internal friction angle phi through computer equipment based on data obtained by a lunar soil in-situ mechanical static penetrometer system. And interpreting in-situ mechanical property parameters of the lunar soil. The vehicle-mounted static penetrometer has the characteristics of small size, light weight, low energy consumption and intelligence, and breaks through the technical bottleneck of the vehicle-mounted static penetrometer.
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