Annular tension elastic rib deployable antenna structure

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...

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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 tension array adjustment and control are relatively difficult, and it is still difficult to apply in the field of large-aperture high-precision cable-net antennas. Put into practice

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