Annular tension elastic rib deployable antenna structure

An antenna structure and elasticity technology, applied in antennas, electrical components and other directions, can solve the problems of difficult to put into practice in the field of large-diameter high-precision cable-net antennas, the difficulty of optimizing design and tension array adjustment and control, to simplify the adjustment work, Achieving the effect of weight reduction and improved surface accuracy

Active Publication Date: 2019-11-05
TONGJI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the Japan Aerospace Exploration Agency (JAXA) proposed the elastic rib deployable antenna structure scheme in the VSOP-2 project, but its optimization design and ten

Method used

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  • Annular tension elastic rib deployable antenna structure
  • Annular tension elastic rib deployable antenna structure
  • Annular tension elastic rib deployable antenna structure

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0079] Example 1:

[0080] A hoop tension elastic rib 3 expandable antenna structure, its structure sees Figure 1-Figure 5 shown, including:

[0081] Center faceplate node 1;

[0082] Elastic rib 3: radially and evenly hinged on the center faceplate node 1;

[0083] Expandable truss 2: one end is hinged to the center faceplate node 1, and the other end is slidingly connected to the elastic rib 3;

[0084] Multiple groups of hoop cables 4 sequentially arranged on the elastic ribs 3 from the inside to the outside: each group of hoop cables 4 is formed by connecting several flexible cable segments between two adjacent elastic ribs 3 end to end;

[0085] Reverse tension array 5: connected between the elastic rib 3 and the deployable truss 2;

[0086] Reflecting surface 6: tensioned and laid on the grid structure composed of elastic rib 3 and hoop cable 4.

[0087] see again Figure 5-7 and Figure 10 As shown, the central faceplate node 1 is composed of an upper faceplate ...

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Abstract

The invention relates to an annular tension elastic rib deployable antenna structure. The structure comprises a central faceplate node; elastic ribs which are radially and uniformly arranged on the central faceplate node at equal intervals; a deployable truss, wherein one end of the deployable truss is hinged to the central faceplate node, and the other end of the deployable truss is slidably connected with the elastic ribs; a plurality of groups of annular cables which are sequentially arranged on the elastic ribs from inside to outside, wherein each group of annular cables is formed by connecting a plurality of flexible cable sections positioned between two adjacent elastic ribs end to end; a reverse tension array which is connected between the elastic ribs and the deployable truss; anda reflecting surface which is laid on a latticed structure formed by the elastic ribs and the annular cables in a tensioning manner. Compared with the prior art, the structure achieves the control ofthe surface precision of the reflecting surface by utilizing the elastic bending deformation of the elastic ribs, and the structure can be applied to a space deployable antenna structure with large-aperture and high-precision requirements.

Description

technical field [0001] The invention belongs to the technical field of aerospace structures, and relates to a deployable antenna structure with circumferential tension elastic ribs. Background technique [0002] Space deployable antenna structures play an important role in military reconnaissance, high-resolution earth observation, mobile satellite communication and other engineering tasks. With the development of the application of aerospace engineering in related fields, the demand for large-aperture and high-precision space-deployable antenna structures is becoming more and more urgent. [0003] However, in practical applications, the existing deployable structural systems are often difficult to meet the requirements of caliber and precision at the same time. In the existing deployable antenna structure system, the cable-net deployable antenna structure is one of the possible solutions that take into account both the aperture and the precision, and it can be applied to h...

Claims

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Application Information

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IPC IPC(8): H01Q15/16H01Q19/12
CPCH01Q15/161H01Q19/12
Inventor 吴明儿项平张天昊张福王晓凯陈晓峰周鑫
Owner TONGJI UNIV
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