An integrated mounting bracket for a star sensor and a thermal control device

Abstract

The invention provides an integrated mounting bracket for a star sensor and a thermal control device, including a star sensor bracket, a radiant panel bracket, a corner box, a radiant panel sunshade brace, and peripheral equipment including a star sensor, a radiant panel, a heat pipe, sun shade. The bracket of the present invention can realize the integrated installation of the star sensor and its high-precision thermal control device (including heat pipes, radiation plates, etc.), so that the star sensor can be separated from the spacecraft structural deck and independently installed outside the spacecraft cabin or On the camera, it lays the foundation for the integrated installation of the star sensor and the camera; at the same time, the bracket of the present invention can optimize the external heat flow conditions of the star sensor heat radiator, and realize high-precision temperature control of the star sensor at the minimum cost.

Description

technical field [0001] The invention belongs to the field of aerospace technology and equipment, and relates to a support for integral installation of a star sensor and its high-precision thermal control device. Background technique [0002] The star sensor is a satellite attitude measurement component, which has the advantages of high measurement accuracy, and is currently more and more widely used in satellites in the fields of communication, navigation, and remote sensing. The measurement accuracy of a star sensor is closely related to its temperature condition. At the same time, due to temperature changes, the structure of the star sensor and the thermal deformation of the internal optical system will eventually affect the measurement accuracy of the star sensor. Therefore, the star sensor with high-precision output has higher requirements for its temperature stability and temperature uniformity. At present, the attitude measurement accuracy requirements of remote sensi...

AI Technical Summary

Problems solved by technology

This solution is not suitable for remote sensing satellites with high-precision requirements. First, the star-sensitive equipment and radiators are installed on the star body through different brackets, which are prone to relative deformation under the action of force or heat. The installation of thermal control components such as star-sensitive equipment and radiators in the same structure can effectively avoid such problems; secondly, remote sensing satellites need to maintain the stability of the angle between the star-sensitive optical axis and the camera optical axis as much as possible to ensure the pointing accuracy of the payload camera. The star sensor needs to be installed on the load-bearing structure of the camera to reduce the link that affects the stability of the angle between the camera and the star sensor's optical axis. There is often no deck nearby to independently install the cooling surface of the star sensor

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