A satellite camera thermal protection door system with active temperature control

Abstract

The invention discloses a satellite camera heat protection door system with an active temperature control function. The satellite camera heat protection door system with the active temperature control function is composed of a heat protection door body, a driving system and a temperature control system. The heat protection door body is composed of a heat protection door structural plate, multi-layer thermal insulation materials on the outer surface, a high-emission-rate coating on the inner surface and an installment ring; the driving system is composed of a speed reduction mechanism and a driving motor; the temperature control system is composed of an embedded electrical heating piece, a temperature sensor and a heating controller; the multi-layer thermal insulation materials cover the heat protection door structural plate; the high-emission-rate coating coats the inner side of the heat protection door structural plate; the driving motor and the speed reduction mechanism are fixed to a camera sunshade; the installment ring of the heat protection door is fixed to the heat protection door structural plate; the driving motor is connected with the installment ring of the heat protection door through the speed reduction mechanism; the motor rotates to open or close the heat protection door. The satellite camera heat protection door system with the active temperature control function can reduce heat leakage of a camera in the non-imaging process and power consumption of active heating of the camera and ensure that the temperature of the camera is stable in the imaging process.

Description

technical field [0001] The invention belongs to the technical field of spacecraft heat control, and is an active and passive temperature control device. Can be used to improve thermal stability of satellite cameras and reduce active heating power consumption for thermal control of cameras. Background technique [0002] In recent years, aerospace optical remote sensing technology has developed rapidly, and the resolution of satellites has been continuously improved. At the same time, many high-resolution remote sensing satellites have rapid attitude maneuvering capabilities. , This design improves the time resolution of the satellite's earth observation, expands the observation area, and has both detection and mapping capabilities. When the attitude of remote sensing satellites is frequently maneuvered, the heat flow outside the space changes rapidly, the thermal stabilization time required for imaging is long, and the heat leakage of the camera is serious. The influence of...

AI Technical Summary

Problems solved by technology

When the attitude of remote sensing satellites is frequently maneuvered, the heat flow outside the space changes rapidly, the thermal stabilization time required for imaging is long, and the camera has serious heat leakage

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