Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Unfoldable reflecting mirror body based on double-curvature negative poisson ratio honeycomb structure

A technology with negative Poisson's ratio and honeycomb structure, which is applied to mirrors and other directions, can solve the problems of aerospace mirrors that cannot be large, have high surface density, and small aperture, and achieve lightweight design, reduce stress concentration, and reduce connectors. Effect

Inactive Publication Date: 2012-11-07
HARBIN INST OF TECH
View PDF1 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the use requirements that the existing aerospace mirrors cannot meet the large ratio of expanded volume to contracted volume, small caliber, low precision, high surface density, the influence of self-weight on the optical surface shape of the mirror, and the stability in the process of unfolding and forming, etc. Problem, the present invention combines advanced shape memory materials, silicon carbide composite materials, and carbon fiber composite materials to propose a deployable mirror body based on a chiral / antichiral honeycomb structure with double curvature and negative Poisson's ratio properties

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Unfoldable reflecting mirror body based on double-curvature negative poisson ratio honeycomb structure
  • Unfoldable reflecting mirror body based on double-curvature negative poisson ratio honeycomb structure
  • Unfoldable reflecting mirror body based on double-curvature negative poisson ratio honeycomb structure

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] Specific implementation mode one: combine figure 1 , figure 2 , image 3 This embodiment is described. This embodiment is composed of silicon carbide or silicon carbide-based composite material pavement layer 1 and triligament antichiral honeycomb structure layer 2. The material is a shape memory composite material; the shape of the pavement layer 1 is parabolic, and the pavement layer 1 is laid on the structural layer 2. The laying layer 1 can provide a high-precision reflective surface, improve the surface smoothness of the expandable mirror body, and reduce its surface scattering rate. The structural layer 2 plays the dual role of carrying the structure and driving the unfolding of the structure.

specific Embodiment approach 2

[0032] Specific implementation mode two: combination figure 1 and Figure 4 This embodiment is described. The difference between this embodiment and the first embodiment is that the structural layer 2 is a four-ligament chiral honeycomb structure. Its composition and connection method are the same as those in Embodiment 1.

specific Embodiment approach 3

[0033] Specific implementation mode three: combination figure 1 and Figure 5 This embodiment is described. The difference between this embodiment and the first embodiment is that the structural layer 2 is a four-ligament backchiral honeycomb structure; its composition and connection method are the same as those of the first embodiment.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an unfoldable reflecting mirror body based on a double-curvature negative poisson ratio chiral honeycomb structure. The unfoldable reflecting mirror body consists of a laying layer and a double-curvature negative poisson ratio chiral honeycomb structural layer; and the structural layer has a paraboloid shape, and the internal surface of the structural layer is the laying layer. The structural layer is made from shape memory polymer materials, and the laying layer is made from metal materials and carborundum or carborundum-based composite materials. The unfoldable reflecting mirror body is used for solving the problems that an aerospace reflecting mirror cannot meet the use requirement on the high ratio of the unfolded volume to the contraction volume, and has low light weight degree, a small caliber and a complicated control system. The unfoldable reflecting mirror body has the functions of obtaining a higher ratio of the unfolded volume to the contraction volume, and repeated folding and unfolding for a plurality of times, can be unfolded at one time, and has a simple structure, high light weight degree, high system reliability and strong stability.

Description

technical field [0001] The invention relates to a expandable mirror mirror body based on a double curvature negative Poisson's ratio honeycomb structure. Background technique [0002] Due to the limitation of space, transportation and launch of aerospace vehicles, the volume and weight of aerospace reflectors are limited, so the deployable reflectors for aerospace must be lightweight, fully expandable at one time, and have a ratio of expanded volume to contracted volume. Large, high reliability performance. With the rapid development of aerospace technology, satellite communications, radio astronomy, and radar technology, the demand for deployable mirrors in space has greatly increased, and they are spacecraft with the most potential for space observation. [0003] Most of the current aerospace reflectors are non-expandable. The reflectors have been assembled and manufactured on the ground, and the launch cost is high. Affected by launch shock and vibration, the reflectors ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/10
Inventor 姚永涛赵显伟刘彦菊冷劲松
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com