Thermal control method of lunar surface patroller six-wheel rocker arm type moving mechanism

Abstract

The invention provides a thermal control method of a lunar surface patroller six-wheel rocker arm type moving mechanism. The thermal control method is used for controlling temperature of the moving mechanism made by adopting titanium alloy materials. The thermal control method is characterized in that: titanium alloy components such as rocker arms and driving mechanism shell bodies adopt titanium alloy micro-arc oxidation coatings with high emissivity, low solar absorptance feature and wide heat-resistant range; wheel surface screen meshes of wheels keep the natural color of titanium alloy without treatment; heat-conducting silica gel is painted between motors inside the driving mechanisms and the shell bodies; and a differential mechanism and a transmission shaft is coated with 5 units of multilayer thermal insulation assemblies. The thermal control method adopts a passive thermal control measure as thermal control means of the moving mechanism, and is simple and reliable; and the thermal control method adopts the novel micro-arc oxidation coatings with high emissivity, low solar absorptance feature and wide heat-resistant range, and ensures that the moving mechanism can meet the operating temperature requirement and have good adaptability to the space environment.

Description

technical field [0001] The invention relates to the field of temperature control of a moving mechanism of a lunar surface patrol device, in particular to a thermal control method of a six-wheel rocker-arm type moving mechanism of a lunar surface patrol device. Background technique [0002] The lunar surface patrol device is a spacecraft that can adapt to the lunar surface environment and carry scientific detection instruments to patrol and detect the lunar surface. Due to the weight reduction of the spacecraft and the demand for material strength, a large number of titanium alloy materials are used in the six-wheel rocker-type mobile mechanism of the lunar surface patrol. Since the surface of the moon is not protected by the atmosphere, the day and night are long, and the temperature changes greatly, with a temperature difference as high as 300°C. The mobile mechanism exposed to the outside of the rover is directly affected by the violently changing external heat flow enviro...

AI Technical Summary

Problems solved by technology

The existing bright anodizing process can only be implemented on the surface of aluminum and aluminum alloy parts, but for titanium alloy materials, this material cannot be prepared by the bright anodizing process to prepare the required low absorption and radiation ratio thermal control coating;

[0006] (3) Although a better thermal control effect can be achieved by using a flexible OSR patch on a plane or a certain curved surface, it is quite difficult to implement this method on the surface of parts with irregular shapes;

[0007] (4) Since the moving mechanism is required to withstand the low temperature below -180°C on a moon night and the high temperature of 150°C on a moon day, the existing thermal control coatings such as white paint have a temperature resistance range of -100 to +100°C, which cannot meet the needs of use

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