Synthesis and Networking of Spaceborne Deployable Prismatic Antenna Mechanisms Based on Graph Theory

IF 1.1 4区工程技术 Q3 ENGINEERING, AEROSPACE

International Journal of Aerospace Engineering Pub Date : 2024-01-10 DOI:10.1155/2024/4347716

Jialong Zhu, Chuang Shi, Xiaodong Fan, Xiaofei Ma, Hongwei Guo, Shikun Zheng, Rongqiang Liu

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引用次数: 0

Abstract

Spaceborne deployable cylindrical antennas have broad application prospects in the fields of space earth observation and remote-sensing detection because of their significant advantages of ultralong aperture, high gain, and flexible beam scanning. As application requirements rapidly develop, a new type of spaceborne deployable cylindrical antenna mechanism with a large diameter and deployability is urgently needed. This paper presents an innovative design for a cylindrical deployable antenna mechanism based on 18R triangular prism elements based on graph theory. The correctness of the configuration is verified by developing a prototype. First, four kinds of nonoverconstrained 12-bar triangular prism-stabilized truss structure configurations and their corresponding topological diagrams are constructed. Second, based on graph theory, three types of 102 triangular prism-stabilized truss mechanism configurations that can be folded into linear mechanisms are derived. Third, the kinematic pair configuration is established to achieve a single-degree-of-freedom 7R2U9S triangular prism deployable unit. Fourth, combined with the geometric topology characteristics of the unit network, a triangular prism unit networking method is proposed, and a cylindrical network mechanism configuration based on 18R triangular prism units is obtained. A prototype was fabricated by 3D printing, and an expansion and retraction function test was conducted, which verified the correctness of the theoretical analysis in this paper. Finally, a new concept configuration for a parabolic cylindrical antenna is proposed. This paper provides a reference for the configuration of large-scale folding truss structures with unit expansion.

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基于图论的空间可部署棱镜天线机制的合成与联网

机载可展开圆柱形天线具有超长孔径、高增益和灵活的波束扫描等显著优势，在空间对地观测和遥感探测领域有着广阔的应用前景。随着应用需求的快速发展，迫切需要一种直径大、可展开的新型机载可展开圆柱形天线机构。本文基于图论，提出了一种基于 18R 三角棱柱元件的圆柱形可展开天线机构的创新设计。通过开发原型验证了配置的正确性。首先，构建了四种非超约束 12 杆三角棱柱稳定桁架结构配置及其相应的拓扑图。其次，基于图论推导出三种可折叠成线性机构的 102 三角棱柱稳定桁架机构配置。第三，建立了实现单自由度 7R2U9S 三角棱柱可展开单元的运动学对配置。第四，结合单元网络的几何拓扑特征，提出了三角棱柱单元组网方法，并获得了基于 18R 三角棱柱单元的圆柱形网络机构配置。通过三维打印制作了原型，并进行了伸缩功能测试，验证了本文理论分析的正确性。最后，提出了抛物面圆柱形天线的新概念配置。本文为具有单元伸缩功能的大型折叠桁架结构的配置提供了参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Aerospace Engineering ENGINEERING, AEROSPACE-

CiteScore

2.70

自引率

7.10%

发文量

195

审稿时长

22 weeks

期刊介绍： International Journal of Aerospace Engineering aims to serve the international aerospace engineering community through dissemination of scientific knowledge on practical engineering and design methodologies pertaining to aircraft and space vehicles. Original unpublished manuscripts are solicited on all areas of aerospace engineering including but not limited to: -Mechanics of materials and structures- Aerodynamics and fluid mechanics- Dynamics and control- Aeroacoustics- Aeroelasticity- Propulsion and combustion- Avionics and systems- Flight simulation and mechanics- Unmanned air vehicles (UAVs). Review articles on any of the above topics are also welcome.