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Simulated Mars soil preparation method and test bed construction method

A test bed and soil technology, applied in teaching models, instruments, educational appliances, etc., can solve the problem that the construction method of the simulated fire soil landing test bed is still blank, and achieve stable performance, good uniformity, and physical and mechanical properties of the landing bed. stable effect

Pending Publication Date: 2022-05-13
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, the development of simulated fire soil with mechanical properties close to real fire soil, the engineering-level preparation method with corresponding gradation and stable mechanical properties, and the construction method of simulated fire soil landing test bed in harsh environments are still blank.

Method used

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  • Simulated Mars soil preparation method and test bed construction method
  • Simulated Mars soil preparation method and test bed construction method
  • Simulated Mars soil preparation method and test bed construction method

Examples

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preparation example Construction

[0056] The invention mainly includes preparation of simulated fire soil and construction of simulated fire soil landing test bed. The preparation method of simulated fire soil includes the steps of collecting volcanic ash, drying, removing impurities such as mud and stones, rolling and crushing, screening and packaging, performing physical and mechanical performance tests after mixing in proportion, and determining the final grading verification.

[0057] The construction method of the simulated Mars landing test bed includes excavating the foundation pit in the designated area, waterproofing the foundation pit, simulating the layered filling of fire soil, and the dry density, particle gradation, uniformity, and pressure-bearing characteristics of the filling. Strict control of other parameters, verification of uniformity and physical and mechanical properties of the simulated fire soil landing test bed after filling, recovery of surface simulated fire soil performance after ea...

Embodiment 1

[0059] A method for preparing simulated Martian soil and constructing a test bed of the present invention comprises: a method for preparing simulated fire soil whose physical and mechanical properties are similar to real fire soil;

[0060] The method of making simulated fire soil is as follows:

[0061] In this example, the main composition of existing domestic volcanoes is investigated and the collection site of the simulated fire soil raw materials is selected. The red volcanic ash is collected from Jingyu County, Jilin Province and transported to the crushing field; the volcanic ash is dried by drying equipment until the moisture content is not greater than 1%. , while removing impurities such as mud, stones, and tree roots in the volcanic ash; the volcanic ash is crushed by a crusher, and the crushed volcanic ash is transported to a combined screen with different apertures for screening, and the volcanic ash particles of different particle sizes are aggregated The body is...

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Abstract

The invention discloses a simulated Mars soil preparation method which comprises the following steps: sequentially drying, removing impurities and crushing volcanic ash to obtain volcanic ash particle aggregates with different particle size ranges, and obtaining corresponding simulated Mars soil standard gradation according to a preset soil mechanical property target value range. The simulated Mars soil can be produced in batches according to the standard grading; the invention further discloses a construction method of the simulated Mars soil test bed, the simulated Mars soil laying area is arranged in the foundation pit, layered filling of the simulated Mars soil is carried out to obtain the test bed, and after filling of each layer is completed, the physical and mechanical parameters of the test bed are controlled according to the physical and mechanical property requirements; a severe landing environment is built on the surface of the test bed. The Mars surface fire soil landform and physical and mechanical properties can be truly reproduced, it is ensured that the Mars lander can recognize the severe environment of the Mars surface with high precision in the Mars surface soft landing process, and meanwhile accidents such as foot pad subsidence are avoided.

Description

technical field [0001] The invention belongs to the technical field of spacecraft recovery landing and low-gravity extraterrestrial celestial body landing and take-off test, and relates to a preparation method for simulating Martian soil and a test bed construction method. Background technique [0002] With the rapid development of aerospace technology, deep space exploration has become one of the important directions for human beings to explore the universe. Among them, the Mars exploration project has completed the content of the experimental stage and entered the substantive implementation stage. The gravity of Mars is only 38% of that of Earth, the air density is only 1% of that of Earth, and the terrain is special, so the difficulty of landing is self-evident. The surface of Mars is covered with silt soil, and there are many pits and pits formed by impacts after being attacked by meteorites, which seriously threaten the safe landing of Mars landers. Before the official...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 隋毅黄伟黎光宇刘威张剑勇郭李杨张亚婧
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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