A preparation method for different characteristic mars weathering layer simulation objects

By combining planetary ball milling and grading sieving techniques with in-situ Martian data, a controllable multi-characteristic Martian regolith simulator was prepared, solving the problem of the single characteristic of existing simulators and enabling multi-target characteristic support for Mars exploration experiments.

CN121595279BActive Publication Date: 2026-07-28TONGJI UNIV
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Patent Information

Application Number
CN202511818127.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-04
Publication Date
2026-07-28
Estimated Expiration
2045-12-04

AI Technical Summary

Technical Problem

Existing Martian regolith simulators exhibit varying degrees of realism in terms of mineral composition, density, porosity, and strength, but a unified preparation standard has not been established, and their characteristics are relatively singular, making it difficult to meet the needs of multi-target characteristic control and adapt to the complex requirements of various engineering purposes and exploration missions.

Method used

Planetary ball milling technology was used to crush and classify volcanic rock raw materials in multiple stages. The gradation was designed in combination with the in-situ particle size distribution of Mars. Pure water or salt solution was introduced to form an ice-containing structure, and secondary minerals were added to prepare a controllable multi-characteristic Martian regolith simulator.

Benefits of technology

It has achieved the preparation of simulants with adaptability to various working conditions, which can meet the needs of ground verification tests and scientific research related to different types of fire and soil. It has adjustable mechanical properties, ice content and chemical composition, and is suitable for diverse experiments in the Mars exploration project.

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Abstract

The present application relates to a kind of preparation methods for different characteristic Mars weathered layer simulation object, comprising: obtaining the chemical element information of real Mars weathered layer, selecting the brown red volcanic rock with approximate chemical characteristics as raw material and drying;The dry raw material is pulverized, classified and screened, and a plurality of particle size components are obtained;Design different types of target particle size grading, to simulate the typical mechanical properties of different regions on the surface of Mars, each grading can be used as dry state regolith sample.Add water or salt solution to dry state regolith sample, and form frozen sample by low temperature, to simulate high latitude or shallow ice frozen environment on Mars.In addition, secondary mineral powder can also be added to simulate the surface environment of Mars after acidification or salinization weathering, to realize more complex chemical characteristics demand.The present application is simple in process, suitable for mass production, and the simulation object and Mars weathered layer have good correspondence in chemical composition, physical and mechanical properties, and simulation regolith can be produced to cope with various working conditions.
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