Star sensor temperature control device

Abstract

The invention provides a star sensor temperature control device which comprises star sensors, light shields, flange plates, installation supports, multi-layer heat insulation assemblies and heaters. The head of each star sensor and the corresponding light shield are installed on one side of the corresponding flange plate and connected with the corresponding installation support through the flange plate. The heaters are arranged at the heads of the star sensors. The light shields are connected to the other sides of the flange plates. The outer surfaces of the light shields and the outer surfaces of the installation supports are covered with the multi-layer heat insulation assemblies. The star sensor temperature control device further comprises heat control coatings arranged on the non-installation faces of the flange plates and the outer surfaces of the heads of the star sensors. According to the star sensor temperature control device, the heat dissipation capacity is improved through forming heat dissipation openings and increasing the heat dissipation area, measures such as arrangement of the light shields and the like are taken, and therefore the requirement for heat dissipation of current star sensors can be met; meanwhile, the low-temperature keeping requirement of the star sensors can be met through the main and standby compensation electric heaters, so that the temperature control effect is good.

Description

technical field [0001] The invention relates to a star sensor, in particular to a star sensor temperature control device. Background technique [0002] As an important part of the aircraft attitude and orbit control system, the star sensor is the main equipment for attitude adjustment and control during the operation of the aircraft. The star sensor is more sensitive to temperature. Excessively high or low temperature, excessive temperature rise and excessive temperature difference will affect the accuracy, performance and life of the star sensor: if the temperature is too low or too high, the star sensor will The processor is not in the optimal operating temperature range, and the accuracy and performance cannot be guaranteed; the temperature rise is too large or the temperature difference itself is too large, resulting in excessive thermal deformation of the star sensor, which affects the pointing and accuracy of the star sensor; Too low temperature, too large temperature...

AI Technical Summary

Problems solved by technology

The star sensor is more sensitive to temperature. Excessively high or low temperature, excessive temperature rise and excessive temperature difference will affect the accuracy, performance and life of the star sensor: if the temperature is too low or too high, the star sensor will The processor is not in the optimal operating temperature range, and the accuracy and performance cannot be guaranteed; the temperature rise is too large or the temperature difference itself is too large, resulting in excessive thermal deformation of the star sensor, which affects the pointing and accuracy of the star sensor; Too low temperature, too large temperature rise and too large temperature difference can easily cause thermal fatigue of the star sensor and affect the life of the star sensor

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