Space camera secondary mirror support structure

A support structure, space camera technology, applied in installation, optics, instruments, etc., can solve the problems of high obscuration ratio, poor temperature adaptability, heavy weight, etc., and achieve the effect of reliable and uniform connection and improved temperature adaptability.

Inactive Publication Date: 2015-01-07
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Space camera secondary mirror support structure
  • Space camera secondary mirror support structure
  • Space camera secondary mirror support structure

Examples

Experimental program
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Effect test

Embodiment Construction

[0032] The invention includes a secondary mirror bracket 1, a metal insert 2 and a metal flange 3. The secondary mirror bracket 1 is laid by a high-modulus carbon fiber reinforced epoxy resin-based composite material laminate, and is formed by using different molds in the laying process Different structures are finally assembled together, sucked glue, and solidified in an autoclave. The material of secondary mirror bracket 1 is made of high modulus carbon fiber reinforced resin-based composite material, which solves the contradiction between high stiffness and light weight. Good vibration suppression effect and temperature stability.

[0033] The secondary mirror support in the present invention includes an inner ring 11, an outer ring 12, and a tangential rib 13 between the inner ring and the outer ring. The inner ring is formed by winding the metal insert 2 as a mandrel, and the prepreg The material forms four-wing tangential ribs. When the length of the four ribs changes d...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/02
CPCG02B7/022G02B7/025
Inventor 任国瑞王炜解永杰凤良杰成鹏飞李创樊学武
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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