Space radiation radiator

Abstract

The invention provides a space radiation radiator. The radiator comprises a radiation substrate, a heat transfer fluid pipe network and a flexible fluid conveying mechanism, the heat transfer fluid pipe network and the flexible fluid conveying mechanism are both installed on the radiation substrate, and the flexible fluid conveying mechanism is connected with the heat transfer fluid pipe network.The radiation substrate comprises an upper radiation panel, a lower radiation panel and a honeycomb interlayer, and the honeycomb interlayer is arranged between the upper radiation panel and the lowerradiation panel. A composite structure of the aluminum honeycomb interlayer, a high-flatness aluminum plate and the fluid pipe network is adopted, low-degeneration-rate glass secondary surface mirrors are pasted to the upper radiation panel and the lower radiation panel, the panel structure stability is high, the glass secondary surface mirrors are not prone to cracking or losing efficacy, and the radiation radiator can work efficiently and stably for a long time; and the double-loop parallel winding heat transfer fluid pipe network improves the temperature uniformity and the heat dissipationcapacity of the radiation substrate, the flexible fluid conveying mechanism enables the radiator to be far away from a spacecraft to conduct double-face heat dissipation, the heat dissipation efficiency is improved, and the practicability is high.

Description

Technical field[0001]The invention relates to the technical field of spacecraft thermal control, in particular to a space radiation radiator.Background technique[0002]The fluid circuit is an important technical means for spacecraft thermal control. Its function is to collect and transmit the waste heat inside the spacecraft, and finally dissipate it to the outer space through a radiator, etc., to realize the comprehensive thermal management of the spacecraft.[0003]The traditional radiator is a single-layer aluminum alloy plate integrated with fluid pipes and heat pipes. The radiator has low stiffness and uneven surface, which is not conducive to sticking a glass-type secondary surface mirror with low degradation rate; the pipe is a light pipe and the inside of the pipe The low convective heat transfer coefficient increases the length of the pipeline, resulting in pressure drop loss, the weight of the radiator, and the probability of space debris impact; the pipelines are mostly arra...

AI Technical Summary

Problems solved by technology

In practical applications, the shielding screen can be installed according to the specific posture and illumination angle of the remote sensor, which can realize the shielding of all or most of the external heat flow from the sun and the earth. This design mainly shields the radiant heat from the sun, which is not very A good solution to the dissipation of waste heat inside the spacecraft

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