Thermal control distribution method for star sensors of GEO (geostationary earth orbit) satellite

Abstract

A thermal control distribution method for star sensors of a GEO (geostationary earth orbit) satellite comprises the following steps of (A) respectively mounting an ASTRO10 star sensor support (2) and an APS star sensor support (3) at a left lower corner and a right lower corner of an outer surface of a west board of a deck of the satellite, and mounting a thermal insulation pad between mounting surfaces; (B) mounting an ASTRO10 star sensor (5) on the ASTRO10 star sensor support (2), mounting an APS star sensor (6) on the APS star sensor support (3), and coating heat-conduction silicon grease between mounting surfaces; (C) sleeving an ASTRO10 star sensor thermal control cabin (1) on the outer sides of the ASTRO10 star sensor (5) and the ASTRO10 star sensor support (2), sleeving an APS star sensor thermal control cabin (4) on the outer sides of the APS star sensor (6) and the APS star sensor support (3), and mounting a thermal insulation pad between mounting surfaces; and (D) mounting aluminum plates on the outer surfaces of the two thermal control cabins, and then adhering secondary surface mirrors to the aluminum plates.

Description

technical field [0001] The invention relates to a layout method of satellite star sensors, which can be popularized and applied on all GEO orbit satellites equipped with star sensors. Background technique [0002] The star sensor is a high-precision spacecraft attitude-sensing device, which has been widely used on low-orbit satellites. As high-orbit satellites put forward the requirements for on-orbit autonomous control, the GEO orbit satellite control subsystem gradually requires the configuration of star sensors as attitude measurement devices. [0003] The star sensors of sun-synchronous orbit satellites are installed on the shady side and are basically not exposed to the sun, while the star sensors of GEO orbit satellites have a long in-orbit life cycle and are installed outside the star. The working environment of satellite sensors on satellites is much more complicated than that of sun-synchronous orbit satellites, so the layout method of star sensors on low-orbit sat...

AI Technical Summary

Problems solved by technology

The secondary structure is composed of a connection base plate, a star sensor support plate and a heat diffusion plate. The star sensor support plate and the heat diffusion plate are connected to the connection base plate through screws. A heat pipe is installed between the star sensor support plate and the heat diffusion plate. The star sensor The heat consumption generated by the work of the radiator is transferred to the heat radiator through the curved heat pipe, and the design is relatively complicated. At the same time, due to the large difference in configuration between the SB4000 platform and the domestic GEO orbit satellite platform, the promotion and application of the domestic GEO satellite platform is very limited.

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