Extraterrestrial rotation mechanism relative motion surface thermal control device

Abstract

The invention discloses an extraterrestrial rotation mechanism relative motion surface thermal control device. The extraterrestrial rotation mechanism relative motion surface thermal control device includes light blocking covering plates, internal multi-layer thermal insulation assemblies, thermal control coatings, and installation fixing fitments; the light blocking covering plates are fixed on asurface of a motion part structure body through the installation fixing fitments, and covers illuminated regions of the motion part structure; the internal multi-layer thermal insulation assemblies are arranged on inner surfaces of the light blocking covering plates and positioned between the motion part structure body and the light blocking covering plates; and the thermal control coatings coverthe outer surfaces of the light blocking covering plates, and the coating method is according to a relevant specification of a spatial thermal control coating. The extraterrestrial rotation mechanismrelative motion surface thermal control device can satisfy the temperature control demand of an extraterrestrial rotation mechanism relative motion surface part, can take into account both a thermalcontrol protection effect and an anti-hooking effect through the local blight blocking covering plates and the multi-layer thermal insulation assemblies on the basis of ensuring reliable motion of themechanism, and is good in reliability, is high in adaptability, and is flexible in design.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a thermal control device for a relative motion surface of an extraterrestrial rotating mechanism. Background technique [0002] The data transmission / relay antennas or other extraterrestrial payloads with multi-dimensional rotating or scanning mechanisms configured by today’s spacecraft have relatively complicated heat flow outside space for their rotating parts, and the exposure conditions of different parts of the rotating mechanism at the same time may vary greatly. If the thermal control design is improper, the temperature difference of the rotating mechanism may reach a certain level, causing the rotating mechanism to be stuck or its performance to decline. The traditional thermal design method is to isolate the influence of uneven heat flow outside the space through the overall thermal control coating of the rotating parts. However, the overall thermal control coating me...

AI Technical Summary

Problems solved by technology

[0002] The data transmission / relay antennas or other extraterrestrial payloads with multi-dimensional rotating or scanning mechanisms configured by today’s spacecraft have relatively complicated heat flow outside space for the rotating parts, and the exposure conditions of different parts of the rotating mechanism at the same time may vary greatly. If the thermal control design is improper, the temperature difference of the rotating mechanism may reach a certain level, causing the rotating mechanism to be stuck or the performance to decline

The traditional thermal design method is to isolate the influence of uneven heat flow outside the space through the overall thermal control coating of the rotating parts. However, the overall thermal control coating method introduces a great risk of hooking to the movement of the mechanism itself

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