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A large-scale deployable shade mechanism applied to spacecraft

A technology for hoods and spacecraft, which is applied to optical filters, instruments, optics, etc. for photography, can solve problems such as inconvenient maintenance, and achieve stable and reliable motion, simple design and configuration, and light weight of the mechanism

Active Publication Date: 2016-03-16
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the hood works in the outer space environment, maintenance is inconvenient, and it is affected by the launch mechanics environment, the hood must ensure high reliability and light weight

Method used

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  • A large-scale deployable shade mechanism applied to spacecraft
  • A large-scale deployable shade mechanism applied to spacecraft

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, a large-scale extendable sunshade mechanism applied to spacecraft in the present invention includes a linear deployment drive assembly and a cascaded sleeve assembly. The linear deployment drive assembly can be extended up and down to drive the outer The cylinder moves, and the movement is transmitted along the path of the outer cylinder, the middle cylinder and the inner cylinder to realize the unfolding and folding of the entire shading cover; the main load-bearing structure of each cascaded sleeve assembly is connected by four vertical beams Composed of upper and lower rings, the vertical beams are processed by high-rigidity carbon fiber rods, and are evenly distributed on the circumference of the upper ring and the lower ring at 90° to ensure that each cascaded sleeve has rigidity.

[0021] A linear deployment drive asse...

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Abstract

The invention discloses a large-scale deployable shading mechanism applied to spacecraft, which is mainly composed of a linear deployment drive assembly and a cascade sleeve assembly. Among them, the parallelogram mechanism composed of light-weight carbon fiber rods, the theme of the linear expansion drive assembly, has a high storage ratio and light weight. The three-stage sleeve assembly is composed of three layers of cascaded sleeves in series, and is driven by the driving assembly to complete the folding and unfolding. The shading cover can provide on-orbit shading for large optical loads. Its structure uses a large number of lightweight and low-friction designs. It has light weight and high reliability. exhibition organization.

Description

technical field [0001] This application relates to a large-scale expandable sunshade mechanism applied to spacecraft, specifically, a linear expansion drive assembly is extended up and down to drive the expansion and retraction of the three-stage sleeve, and finally realizes the large-scale load. shading effect. Background technique [0002] The main stray light source of the solar space-time optical system. The ability of a molded optical system to suppress stray light is mainly determined by the form and structure of the optical system. After the optical system is determined, the suppression of external stray light mainly depends on the hood, which can suppress the stray light from the sun, the moon or the earth reflecting sunlight, ensure a high signal-to-noise ratio and maintain the thermal stability of the telescope structure. Through the appropriate design of the light blocking ring, the internal stray light can also be reduced to improve the imaging effect. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B11/04
Inventor 薛景赛周徐斌王萌王智磊杜三虎
Owner SHANGHAI SATELLITE ENG INST