Tensile Integral Deployable Antenna

Abstract

The invention discloses a tensegrity deployable antenna, which mainly solves the problems of large folding volume and low deployment reliability in the prior art. It consists of n quadrilateral plane expansion units connected to each other through Hooke hinge joints (3) to form a regular polygonal prism-shaped expansion structure; each quadrilateral plane expansion unit adopts a spring frame structure, and the center adopts four support rods (2) and rotating The pair (4) is a cross-shaped expansion structure formed by fixed connections. The two straight rods of the cross-expansion structure can rotate relatively around the central axis of the planar rotating pair; through the second spring (1-2) of each quadrilateral planar expansion unit and the tensile force of the fourth spring (1-4), causing the overall structure to expand from the collapsed state. The invention has the characteristics of high deployment reliability and small folded volume, is particularly suitable as a deployment structure of a large spaceborne antenna, and can be used in the aerospace field.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a tensioned integral expandable antenna, which realizes the automatic expansion of the antenna and can be used as a space reflector antenna. Background technique [0002] Spacecraft, especially satellite antennas, have become an indispensable part of any space system. Spacecraft antennas affect and restrict the performance and functions of the entire wireless communication system and even the entire spacecraft. Antenna technology has become an important part of promoting the technological progress and important factor in the development of space applications. [0003] In order to meet the needs of functions such as multi-function, multi-band, large capacity, high power, and long life, satellite antennas inevitably tend to be larger in diameter. Because space equipment equipped with antennas needs to be sent into space by rockets, satellite antennas must be made foldable, that i...

AI Technical Summary

Problems solved by technology

Since the height of the surrounding truss unfolded structure in the folded state is the sum of the two sides of the parallelogram, the folded volume is relatively large; at the same time, since the unfolding of the ring truss is driven by a rope, the unfolding reliability is low, and in order to drive the unfolding motor, it is necessary to carry enough Energy, fuel or power supply

For the space-borne antenna structure, adding energy supply devices will undoubtedly bring challenges to the antenna's launch, increase the cost of the antenna's launch, and it is difficult to achieve a large-diameter antenna

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