Low-expansion mesh reflector using composite material connectors

A technology of composite materials and connectors, applied in the direction of electrical components, antennas, etc., can solve the problems of large reflector mass and large thermal deformation in space, and achieve the effects of high light transmittance, small thermal expansion coefficient, and high specific stiffness
CN102882008AActive Publication Date: 2013-01-16XIAN INSTITUE OF SPACE RADIO TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
XIAN INSTITUE OF SPACE RADIO TECH
Publication Date
2013-01-16

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Abstract

The invention relates to a low-expansion mesh reflector using composite material connectors and belongs to the technical field of space antenna reflectors. The low-expansion mesh reflector comprises back ribs, reflecting surfaces and connectors. Each refecting surface is a quasi-isotropic TWF (true wave fiber) fabric reflecting surface, and each back rib is a composite material laminate back rib in a groined shape and having a symmetrical structure. Each connector is positioned at an included angle of two crossed back ribs in the back ribs, so that the connector and the two crossed back ribs are fixedly connected. A connector embedded part is positioned on a bottom face of the connector, and the reflector is fixed or mounted by the connector embedded part so as to be convenient for transportation or storage. The reflecting surface in the low-expansion mesh reflector uses the quasi-isotropic TWF fabric, has quite high light-transmittance and a lower thermal expansivity, influence of space light pressure to a molded surface of the reflecting surface can be effectively reduced, temperature gradient generated by the reflecting surface under a space thermal environment can be lowered, and since the temperature gradient is lowered, thermal deformation of the reflecting surface can be reduced.
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Description

technical field

[0001] The invention relates to a low-expansion mesh reflector using composite material connectors, and belongs to the technical field of space antenna reflectors. Background technique

[0002] At present, with the rapid development of space technology, space antenna technology, which is an important payload of spacecraft, has also made great progress. There are more and more types of antennas and more and more complex structures. The reflector antenna has gradually developed into an antenna with a deployable reflector that can be deployed in space, and the antenna reflector is required to have small mass, high rigidity and strength, and small thermal deformation in space. The traditional antenna reflector form can no longer meet the requirements of the reflector with small mass, high stiffness and strength, and small thermal deformation in space. It is necessary to design a reflector structure with small mass, high stiffness and strength, and small thermal d...

Claims

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