Formula design and adjustment method of lunar regolith simulant for engineering

Abstract

The invention discloses a formula design and adjustment method of a lunar regolith simulant for engineering, in the method, butte black clay scoria in Jinchuan Town, Huinan Country is selected as a raw material for preparing the lunar regolith simulant; median value particle size (D50), effective particle size (D10), particle size (D30) with 30% of sifted weight, control particle size (D60), coefficient of non-uniformity (Cu) and coefficient of curvature (Cc) are selected for controlling mechanical properties of the lunar regolith simulant; the median value particle size D50 is more than 48 mu m and less than 300 mu m, the design particle size distribution is in the range of a particle size distribution curve of lunar regolith as far as possible, and the shape of the particle size distribution curve can be in line with the natural law by regulating the Cu and the CC; the raw material in 10 different mesh sizes can be obtained after crushing the scoria, pulverizing and sorting, the particle size distribution of the raw material after sorting is taken as a coefficient matrix, the design particle size distribution is taken as an object matrix, and a formula matrix of the lunar regolith simulant can be obtained by solving linear equations; when the design particle size distribution of the lunar regolith simulant and the particle size distribution of the raw material change, re-adjustment and calculation are performed so as to enable the mechanical properties of the prepared lunar regolith simulant to be close to those of real lunar regolith.

Description

technical field [0001] The invention relates to a formula design and adjustment method for simulating lunar soil for engineering. Background technique [0002] In order to ensure the smooth implementation of tasks such as lunar patrol detection, sampling and soft landing, the lunar environment in which they work should be simulated on the ground, and corresponding test sites should be established, such as soil tank tests, indoor test sites and outdoor test sites, etc. , so as to complete the test and assessment of related performance, such as mobile performance test, autonomous navigation, path planning, surface sampling and drilling sampling and other verification tests. A certain amount of simulated lunar soil is laid according to the needs of the test, so the development of simulated lunar soil for engineering is a key link in the construction process of the test site. [0003] The main difference between lunar soil and soil is that the particles are fine and do not cont...

AI Technical Summary

Problems solved by technology

However, due to different purposes, these simulated lunar soil solutions are also quite different, and a unified standard has not yet been formed, and it is difficult to produce and purchase on a large scale

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