Low-gravity simulated lunar soil

A low-gravity, lunar soil technology, applied in the preparation of test samples, etc., can solve the problems of short test time and high cost, and achieve the effects of stable test state, cost saving and improved effectiveness

Inactive Publication Date: 2013-03-13
CHINA NORTH VEHICLE RES INST
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Problems solved by technology

For this reason, foreign countries usually use large-scale aircraft, load corresponding test equipment, and conduct parabolic flight to simulate a low-gravity state, so as to carry out mechanical performance evaluation tests. The disadvantages are that the cost is huge and the time for a single test is short.

Method used

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Embodiment Construction

[0016] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. figure 1 ,

[0017] The method specifically includes the following steps:

[0018] Step 1: Apply the model similarity theory to determine the configuration target;

[0019] In order to simulate the mechanical performance characteristics of lunar soil under 1 / 6 low gravity of the moon under the 1g gravity state of the earth, it is first necessary to determine the lunar soil equivalent configuration target.

[0020] When the lunar rover performs the traction performance test on the simulated lunar soil, similar theory and model tests are carried out on the moon’s 1 / 6g gravity environment and the earth’s 1g gravity environment, and the π term of the lunar wheel’s soil effect can be obtained as follows:

[0021] ...

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Abstract

The invention belongs to the technical field of configuration of simulated lunar soil and particularly relates to low-gravity simulated lunar soil. The mechanical properties of the low-gravity simulated lunar soil can reach lunar soil in-situ mechanical properties as follows under the earth gravity of 1g: the pressure-bearing coefficient Kc is 0.14 N/cm<2> and kphi is 0.82 N/cm<3> and n is 1; the shearing coefficient C is 0.017 N/cm<2> and phi is 35 degrees and j is 1.8 cm; the physical density is 1/6 of the average density of the lunar soil, namely the density is 0.35 g/cc; and then, the simulated lunar soil is obtained by milling, sieving and grading grain diameters. The low-gravity simulated lunar soil can realize the full-simulation of the mechanical property of a lunar surface under the condition of ground gravity, and a manner of parabolic flight of an airplane does not need to be adopted to carry out a performance estimation test; and the test state is stable, the expenditure can be greatly saved and the low-gravity simulated lunar soil has the actual meaning of improving the effectiveness of a test check.

Description

technical field [0001] The invention belongs to the technical field of configuration of simulated lunar soil, and in particular relates to a low-gravity simulated lunar soil. Background technique [0002] Foreign simulated lunar soils include JSC-1, MLS-1, MLS-2 of the United States, MKS-1, FJK-1 of Japan, Russia, etc., mainly simulating the high-titanium lunar soil of the Apollo11 ​​moon landing site and the Apollo14 moon landing site low-titanium lunar regolith and highland lunar regolith. Domestically, the invention patent "a method for preparing simulated lunar soil (CN 101957280A)" was proposed by the Astronomical Observatory of the Chinese Academy of Sciences, and CAS-1 simulated lunar soil was prepared. The chemical composition is similar. The invention patent "Material for Simulating Lunar Soil (CN 102115321A)" was proposed by Beijing Institute of Satellite Environmental Engineering. It is equipped with a simulated lunar soil with a friction angle of 40° for the lu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 江磊苏波王长科贾文华卢国轩刘兴杰杨树岭蒋云峰毛宁姚其昌
Owner CHINA NORTH VEHICLE RES INST
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