A flexible rib deployable antenna device with active surface adjustment function

Abstract

The invention discloses a flexible rib unfoldable antenna apparatus with an active profile adjustment function. The flexible rib unfoldable antenna apparatus comprises a profile adjustment apparatus Amounted on a flexible rib unfoldable supporting apparatus; a reflective film surface is attached to the profile adjustment apparatus A; the flexible rib unfoldable supporting apparatus comprises a central winding body and multiple rib plates clamped and mounted on the central winding body through multiple sections of rib plate clamping pieces; in an initial state, the rib plates are wound aroundthe central winding body in a bundling and fixing manner by ropes; after the antenna is launched to enter a track, the ropes for bundling are broken automatically and the flexible rib plates are unfolded to a straight state, and the reflective film surface attached to the profile adjustment apparatus A is opened to realize unfolding of the antenna; the apparatus does not extra driving mechanism, so that the whole weight of the apparatus is reduced, and the working precision requirement of the reflective film surface is ensured effectively; after the antenna is unfolded, a locking apparatus isnot needed, so that the mode of implementation is simple, and operation is stable and reliable; and an unfolding mechanism is simple and high in storage rate, so that the flexible rib unfoldable antenna apparatus is applicable to communication satellite and space exploration.

Description

technical field [0001] The invention relates to a deployable antenna device, in particular to a flexible rib deployable antenna device with active surface adjustment function, which belongs to the technical field of satellite communication equipment. Background technique [0002] Space-borne antenna is a satellite communication device used to receive and transmit space electromagnetic waves. Its reflective surface is generally a paraboloid-shaped metal conductor surface, which has the characteristics of high gain and high reliability. It is mostly used in high-frequency, microwave and even millimeter waves. Band satellite communications, so spaceborne antennas play a huge role in space science and technology, radar communications, military engineering and other fields. [0003] With the continuous deepening of human exploration activities in the universe, the high requirements for the performance of spaceborne antennas are becoming more and more intense, such as as large as ...

AI Technical Summary

Problems solved by technology

Solid reflective surface deployment antennas have high precision in shape and surface, but they are large in mass and large in storage volume; inflated and hardened deployment antennas have a large storage rate and small mass, but it is difficult to guarantee the shape and surface accuracy of the reflector surface; mesh surface deployment antennas mainly include radial rib deployment antennas, Winding rib expansion antenna, ring column expansion antenna, peripheral truss expansion antenna and other forms, this type of expandable antenna has high storage rate, high reliability of deployment, and light weight. The accuracy of the reflective surface shape can be adjusted by adjusting the length of the cable. At present, the most active research on a type of space antenna, but with the increase of the antenna aperture, the number of cables increases exponentially, which brings great challenges to the adjustment of shape accuracy

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