A space camera secondary mirror support structure

Abstract

The invention provides a space camera secondary mirror support structure. The space camera secondary mirror support structure comprises a secondary mirror support, a metal insert and a metal flange. The secondary mirror support comprises an inner ring and an outer ring which are concentrically arranged. The inner ring and the outer ring are connected through a plurality of tangential ribs which are evenly distributed. The outer ring is of a carbon fiber composite material laminated board structure, the inner ring is formed by winding a carbon fiber composite material prepreg with the metal insert as a mandrel, the prepreg is divided into bundles in the thickness direction in the process of the last turn of winding, a prepreg bundle is separated out each time an equal division point of the inner ring is passed through, and the ends of the prepreag bundles obtained through division are connected with the outer ring to form the tangential ribs. The space camera secondary mirror support structure overcomes the conflict between high rigidity and low weight; meanwhile, the method that the prepreg is wound and laid with the metal insert as the mandrel and the metal insert and the composite material are solidified together is adopted, and therefore the firm assembly problem of the metal insert and the composite material secondary mirror support is solved.

Description

technical field [0001] The invention relates to a secondary mirror support structure of a space camera. Background technique [0002] The coaxial three-mirror optical system is widely used in long focal length and high-resolution space cameras. The distance between the primary and secondary mirrors is very large, and the change of their relative positions has a great impact on the imaging quality of the camera. Usually, the main mirror assembly and the secondary mirror assembly are connected through the main support tube and the secondary mirror bracket. The existing secondary mirror brackets are mostly metal structures, which have technical problems such as heavy weight, high blocking ratio, and poor temperature adaptability. Contents of the invention [0003] The invention proposes a secondary mirror bracket structure based on carbon fiber composite material, which can meet the requirements of high specific stiffness, small blocking ratio and good temperature adaptabilit...

AI Technical Summary

Problems solved by technology

Usually, the main mirror assembly and the secondary mirror assembly are connected through the main support tube and the secondary mirror bracket. The existing secondary mirror brackets are mostly metal structures, which have technical problems such as heavy weight, high blocking ratio, and poor temperature adaptability.

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