High-temperature-uniformity heat radiator for navigation satellite

Abstract

The invention discloses a high-temperature-uniformity heat radiator for a navigation satellite and belongs to the technical field of spacecraft heat control. A temperature radiator comprises a honeycomb plate, more than two U-shaped heat tubes, heaters and peripheral equipment, wherein the peripheral equipment is a rubidium clock; the straight tube section of each U-shaped heat tube consists of a tube body and a fin; the cross section of each U-shaped heat tube is T-shaped; the U-shaped section of each U-shaped heat tube only comprises the tube body of the corresponding straight tube section; the U-shaped heat tubes are embedded into the honeycomb plate; the upper surfaces of the fins and the lower surfaces of the tube bodies are respectively attached to the upper and lower inner surfaces of the honeycomb plate; the U-shaped heat tubes are nested with each other, so that the straight tube sections of the U-shaped heat tubes in the honeycomb plate are adjacently arranged; the surface of the honeycomb plate corresponding to the adjacent arrangement area of the straight tube sections serves as an installation area of the rubidium clock; the heaters are uniformly arranged on the tube bodies of the straight tube sections of the U-shaped heat tubes and are used for providing compensation heating amount for the heat radiator. The efficient heat transfer, heat dissipation and heat balance of the temperature radiator can be realized, and requirements on the environment temperature control accuracy of the rubidium atomic clock are met.

Description

technical field [0001] The invention relates to a radiator, in particular to a high-temperature uniform thermal radiator for a navigation satellite, and belongs to the technical field of spacecraft thermal control. Background technique [0002] Spaceborne atomic clocks usually need to work in a temperature environment with high temperature control accuracy and high temperature control stability. Taking navigation satellites as an example, the ambient temperature control accuracy of rubidium atomic clocks is required to be better than ±0.3°C, and the day stability control is better than ±1°C. For this reason, the navigation satellite is designed with an independent temperature-controlled small cabin for the rubidium atomic clock equipment. [0003] The electrical energy consumed by the rubidium atomic clock during operation will be converted into waste heat, which needs to be dissipated out of the star through a stable heat transfer path to maintain the working environment o...

AI Technical Summary

Problems solved by technology

However, the contact heat transfer resistance between the parallel heat pipe 1 and the balanced heat pipe 3 is constant, which in turn affects the transmission efficiency and temperature uniformity of the heat pipe network to achieve a higher goal

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