Novel terahertz carbon fiber composite panel structure,

Abstract

The invention relates to a novel terahertz carbon fiber composite panel structure. The composite panel structure comprises a panel main body, and is characterized in that the panel main body consistsof a core material and skins wrapped on the outer surface of the core material; each of the upper surface and the lower surface of the core material is connected with a layer of skin; the core material is of a carbon fiber sandwich structure; the skins are carbon fiber laminated plates; and the carbon fiber laminated plates are connected to the outer surface of the carbon fiber interlayer structure through resin curing and cementation. According to the invention, the conventional aluminum honeycomb structure is replaced by the carbon fiber structure, the influence of temperature variation on the surface shape accuracy of the core material is reduced, and the observation efficiency of a high-precision terahertz telescope is ensured.

Description

technical field [0001] The patent of the present invention relates to the technical field of thermal insulation, especially a new type of terahertz carbon fiber composite panel structure. Background technique [0002] The panel constitutes the main reflector of the antenna. The main reflector is an important part of the telescope system to collect faint radiation from celestial bodies. The accuracy of its surface shape will directly affect the light collection efficiency of the telescope, so it has extremely high precision requirements. In the extreme site environment that is favorable for astronomical observation, carbon fiber reinforced composite materials are a more reasonable and advanced material choice. It has small thermal deformation, high specific strength, and large specific modulus. Therefore, in the scheme of the main surface of the terahertz antenna, the size of a single panel can be large, and the total number of panels is small, which is conducive to rapid ins...

AI Technical Summary

Problems solved by technology

At present, when carbon fiber materials are actually applied to antenna panels, most of them use a sandwich structure in which high-precision carbon fiber laminates are used as skins and aluminum honeycomb structures are used as core materials. However, according to the results of simulation and low-temperature tests, aluminum honeycomb The thermal stability of the panel structure of the core material cannot meet the precision requirements of the terahertz antenna, and the relatively high coefficient of thermal expansion (CTE) in the normal direction of the honeycomb will still cause slight changes in the surface shape when the temperature changes, but this is enough to affect the terahertz antenna. Observational Efficiency of Precision Terahertz Telescopes

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