Satellite-borne flexible composite material shell surface deployable antenna device

Abstract

The invention provides a spaceborne flexible composite material shell surface deployable antenna device. The device comprises a flexible composite material shell surface, a variable cross-section radial supporting rib, a constant torque hinge, an unfolding synchronizing device, an unfolding limiting adjusting device, a locking and unlocking device and a center body. The variable cross-section supporting ribs are driven by the constant-torque hinges to rotate and drive the flexible composite shell face to be unfolded. The unfolding synchronization device is used for limiting the unfolding speed of the variable cross-section supporting ribs. The unfolding limiting adjusting device is used for adjusting the in-place precision after the variable cross-section radial supporting rib is unfolded in place. A flexible composite material shell surface is introduced as a reflecting surface of the antenna. Under the same profile precision requirement, compared with a metal wire mesh reflector antenna with the same size, a tension cable system is not needed, and the number of back supporting ribs is reduced. According to the invention, a new technical approach is provided for the spaceborne antenna load, wherein the device has the advantages of being small in storage size, reliable in unfolding process, high in unfolding surface precision and the like, and is suitable for communication of different frequency bands of the spaceborne antenna and the like.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a spaceborne flexible composite material shell surface expandable antenna device. Background technique [0002] The deployable antenna is an effective measure to solve the typical contradiction between the demand for spaceborne large-aperture antennas and the load limit of vehicles. For space deployable reflector antennas, according to the different forms of folding structure, it can be roughly divided into solid surface deployable antennas, mesh deployable antennas, inflatable deployable antennas, and two or more ways to combine deployable antennas and other types. Among them, the mesh-shaped deployable antenna using wire mesh has the advantages of strong size scalability, high storage efficiency, and light weight. This type of reflector antenna has been widely used, and its diameter ranges from a few meters to nearly a hundred meters. Since the wire mesh surface does not have...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of improving the precision of the wire mesh deployable antenna, and provides a spaceborne flexible composite material shell surface deployable antenna device, which introduces the flexible composite material shell surface as the reflection surface of the antenna, and adopts the flexible composite material shell surface Excellent elastic memory performance, to maintain the shape and surface after deployment. Under the same shape and surface accuracy requirements, compared with the same size wire mesh reflector antenna, no tension cable system is required, and the number of back support ribs is reduced.

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