High-adaptation truss temperature control method

Abstract

The invention discloses a high-adaptation truss temperature control method. The high-adaptation truss temperature control method includes that step 1, coating multi-layer thermal insulation components at the surface of a support rod of a truss; step 2, spraying intelligent coats to the surfaces of a rod hinge which do not influence the stretching of a movable component. A multi-layer thermal insulation structure comprises multi-layer thermal insulation components of multiple units, and the multi-layer thermal insulation component of each unit is composed of double-sided aluminum plated polyester films and nylon net scarves which are distributed at intervals. Each intelligent coat is made of thermotropic phase change material, the infrared emitting ability is changed along with the change of temperature, the temperature change induces phase change, and then the emitting ability is changed along with the phase change so as to keep the rod hinge at an ideal temperature. The high-adaptation truss temperature control method solves the on-track temperature control problem before and after stretching the truss, adapts to temperature needs under different external thermal flow conditions and has advantages of high adaptation, good reliability and flexible design.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to temperature control of a truss with high temperature control requirements for different external heat flows. Background technique [0002] Satellites are developing in the direction of high precision, high stability and high resolution, which puts extremely high requirements on the thermal deformation of the truss structure. The truss will face a complex external heat flow environment at different moments during launch and in-orbit operation. The thermal deformation of the truss structure under extreme temperature conditions will affect the imaging performance and even lead to mission failure, such as the failure of the antenna deployment mechanism to deploy normally. Therefore, it is necessary to adopt a suitable temperature control method for the truss to ensure that the entire truss structure is in a suitable temperature range from launch to orbit. [0003] Further, the tr...

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Problems solved by technology

[0007] In order to solve the temperature control requirements brought about by the prior art that cannot adapt to the truss deployment and track changes, the present invention proposes a highly adaptable truss temperature control method, especially suitable for complex and changeable external heat flow such as the temperature of the truss of the antenna deployment mechanism. control

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