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Planar unfoldable truss and stepwise unfolding method thereof

A flat and truss technology, applied in the field of aerospace vehicles, can solve problems such as many joints and complex movement laws, and achieve the effects of ensuring movement coordination, ensuring deployment timing, reducing ground assembly accuracy and test debugging difficulty.

Active Publication Date: 2014-06-04
SHANGHAI AEROSPACE SYST ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] a. The mechanism is a multi-rod closed-loop, multi-degree-of-freedom rod system, with many joints and complex motion rules;

Method used

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  • Planar unfoldable truss and stepwise unfolding method thereof
  • Planar unfoldable truss and stepwise unfolding method thereof
  • Planar unfoldable truss and stepwise unfolding method thereof

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Embodiment Construction

[0049] The planar deployable truss proposed by the present invention and its step-by-step deployment method will be further described in detail below with reference to the drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in very simplified form and use imprecise ratios, which are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention.

[0050] The core idea of ​​the present invention is to provide a planar expandable truss, including: a planar antenna outer panel, a planar antenna inner panel, a first hinge, a spacecraft platform, an inner panel member, a first platform member, and a second platform member , the first inner plate diagonal bracing member, the second inner plate diagonal bracing member, the central hinge, the connecting rod, the second hinge, the hinge between t...

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Abstract

The invention discloses a planar unfoldable truss which includes a planar-antenna external board, a planar-antenna internal board, a first hinging chain, a spacecraft platform, an internal-board rod piece, a first platform rod piece, a second platform rod piece, a first internal-board oblique-support rod piece, a second internal-board oblique-support rod piece, a central hinging chain, a connection rod piece, a second hinging chain, an inter-rod hinging chain, an external-board rod piece and a joint bearing. The whole planar unfoldable truss is formed through mobile connection so that a ten-rod closed-loop three-freedom-degree rod system is formed. At the same time, the invention also discloses a stepwise unfolding method for the planar unfoldable truss and the method realizes the change of the truss structure and freedom degree from 3 to 2, to 1 and then to 0 through sequential locking of different hinging chains in the whole unfolding process so that unfolding and locking of the planar unfoldable truss are completed and the planar unfoldable truss can be used for unfolding of two planar antennae of a single wing of a spacecraft.

Description

[0001] technical field [0002] The invention relates to the technical field of aerospace vehicles, in particular to a planar deployable truss and a step-by-step deploying method thereof. [0003] Background technique [0004] At present, there are few domestic and foreign researches and applications on the motion laws of the deployable truss deployed by two planar antennas on a single wing of a spacecraft. The typical application abroad is the Canadian RADARSAT satellite. The development of radar satellites in China started relatively late. The remote sensing radar satellite antenna already in orbit is similar in structure to RADARSAT-1. Combining the research status at home and abroad, its main characteristics and shortcomings are as follows: [0005] a. The mechanism is a multi-rod closed-loop, multi-degree-of-freedom rod system, with many joints and complex motion rules; [0006] b. The deployment timing and motion coordination of the link mechanism are closely rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/08
Inventor 李波李建营
Owner SHANGHAI AEROSPACE SYST ENG INST
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