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
CN114495677APending Publication Date: 2022-05-13BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
Publication Date
2022-05-13

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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.
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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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