A vacuum high and low temperature lunar soil environment simulation device and its simulation method

Abstract

The invention discloses a high and low temperature vacuum lunar soil environment simulator, which comprises a high and low temperature vacuum environment simulator including a simulant lunar soil containing device and a vacuum tank; a low temperature refrigeration cycle device; a diffusion pump; a mechanical pump and a heating component; the simulant lunar soil containing device is provided with a lunar soil drum for containing simulant lunar soil, and the location of the simulant lunar soil containing device is trimmed by a mobile platform; the simulant lunar soil containing device is arranged in the vacuum tank; the vacuum tank is vacuumized by a vacuum tube through the diffusion pump and the former mechanical pump; the low temperature refrigeration cycle device can refrigerate the lunar soil by a purple copper pipe which is designed on the wall of the lunar soil drum and is internally provided with a freezing medium; the surface of the simulant lunar soil is heated by an iodine-tungsten lamp arranged above the lunar soil drum. The high and low temperature vacuum lunar soil environment simulator has the advantages that daytime high temperature or night low temperature environment of surface-layer lunar soil and low temperature environment of deep-layer lunar soil under vacuum conditions can be simulated, and the high compactness of 1.9g / cm3 and moisture content less than 0.1% of the simulant lunar soil can be ensured.

Description

technical field [0001] The invention relates to a vacuum high and low temperature lunar soil environment simulation device, in particular to a device for simulating high vacuum on the surface of the moon, dry lunar soil and high density, high temperature of the surface lunar soil during the day, low temperature of the deep lunar soil, and overall soil at night. Low temperature environment simulator. Background technique [0002] The moon is the closest celestial body to the earth. Lunar exploration is the historic beginning of human interstellar exploration. From the perspective of human space exploration, lunar exploration has extremely important strategic significance, because it is a transit base for interstellar exploration. Since the American Apollo 11 spacecraft landed on the moon for the first time on July 20, 1969, 12 American astronauts have landed on the moon and brought back a large number of lunar soil and rock samples; the former Soviet Union has also carried ou...

AI Technical Summary

Problems solved by technology

[0006] (1) Insufficient density: the real lunar soil is in a state of high density, with a density of about 1.9g / cm 3 , the simulated lunar soil is in a loose state of preservation, and its density generally does not exceed 1.5g / cm 3 ;

[0007] (2) The water content is too high: the real lunar soil does not contain water, and the simulated lunar soil is stored at normal temperature and pressure, and contains a large amount of water vapor inside. The existence of water molecules greatly affects the physical properties of the simulated lunar soil;

[0008] (3) The difference in temperature field is too large: the temperature difference between the surface layer and the deep layer of the real lunar soil is large, and the temperature below 300mm is a low-temperature environment, and the temperature gradually becomes uniform with the depth increasing, about -30 ~ -40 ° C. During the use of simulated lunar soil Often the temperature is homogenized, and some are even used at room temperature;

Images