A Reversible Locking Radiation Thermal Control Mechanism

Abstract

The invention provides a reversible locking radiant heat control mechanism which comprises a supporting plate, trusses and a moving cover plate. The supporting plate is fixedly connected with a temperature control target deck; one end of the moving cover plate is movably connected with the supporting plate; and the other end of the moving cover plate is movably connected with the temperature control target deck through the trusses. According to the reversible locking radiant heat control mechanism, due to motion of the moving cover plate, a space radiation angle of the temperature control target deck is changed so as to fulfill the aim of adjusting temperature of equipment in a space vehicle; therefore, the reversible locking radiant heat control mechanism can meet different demands of the space vehicle such as a satellite under low and high-temperature working conditions for heat dissipation surfaces; when the moving cover plate is parallel to the temperature control target deck, the heat dissipation effect of the temperature control target deck is reduced, and the low temperature condition can be improved; when the moving cover plate is perpendicular to the temperature control target deck, the heat dissipation effect of the temperature control target deck is enhanced, and the high temperature condition can be improved; and the reversible locking radiant heat control mechanism is simple in structure and easy to realize.

Description

technical field [0001] The invention relates to a thermal control mechanism, in particular to a reversible locking radiation thermal control mechanism. Background technique [0002] The thermal control mechanism of the spacecraft is mainly used to ensure that the structural components and instruments of the spacecraft are in a suitable temperature range in the space environment, so that they can work normally. At present, the thermal control methods widely used in spacecraft can be roughly divided into two categories: passive and active. Passive thermal control is a kind of open-loop control, which mainly relies on reasonable layout and selection of materials with appropriate thermophysical properties and thermal control devices with relatively simple structures to organize the heat exchange process. This passive thermal control mechanism is simple and reliable. And long working life, but generally do not have the ability to automatically adjust the temperature. The active...

AI Technical Summary

Problems solved by technology

The active type is also called the radiation type active thermal control mechanism. The radiation type active thermal control mechanism uses the driver to drive the moving parts to adjust the radiation heat dissipation capacity and control the temperature; Thermal control turntable and flexible blade thermal control mechanism, etc.; this active thermal control mechanism generally adopts closed-loop control, and usually consists of three parts: a temperature sensor, a controller and an actuator; when an active thermal control mechanism is used, The temperature information of the controlled object can be fed back to the controller, compared with the preset value, and then command the actuator to act according to the need to realize automatic temperature control. Because it can achieve more stringent temperature guarantee, it is used on spacecraft It is widely used, but this type of active thermal control mechanism is relatively complicated, which will inevitably increase the quality of the thermal control system and consume a lot of power

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