Spaceborne Umbrella Antenna Structure and Deployment Method with Self-Deploying Speed ​​Regulating Device

Abstract

The invention relates to the technical field of satellite deployable structures, in particular to a space-borne umbrella-shaped antenna structure with a self-deploying speed regulating device and a deploying method thereof. The device is composed of base, reed, antenna rib, spring, conical block, mass block, steel wire, connecting rod, support, central axis, etc.; the base and the antenna rib are hinged through the reed, and the top of the antenna rib is a rectangular cavity. The central shaft is fixed in one of the cavities, the top of the central shaft is covered with a spring, the bottom is connected to the conical block, the lower part of the conical block is symmetrically hinged to the upper link, the lower link is hinged to the support, the upper link, the lower link are hinged to the mass block, The support and the conical block are sleeved on the central shaft, and the steel wire is clamped between the cavity wall and the conical block; spring-conical block-mass block-steel wire-connecting rod-support-central shaft constitutes a self-expanding speed regulating device . The invention releases the spring-shaped steel wire to open the antenna rib at a uniform speed, and then unfolds the whole antenna. The device of the invention has the advantages of light and handy structure, no power, self-adjusting speed, stable and reliable.

Description

technical field [0001] The invention relates to the technical field of satellite deployable structures, in particular to a space-borne umbrella-shaped antenna structure with a self-deploying speed regulating device and a deploying method thereof. Background technique [0002] The deployable umbrella antenna is a compact satellite antenna. It is mainly composed of radial rigid ribs, reflectors and feed sources. It is named for its unfolding and folding similar to umbrellas in daily life. In satellite applications, the radial ribs are made into a certain curved shape, and the reflective mesh fixes the concave surface of the radial ribs. Affected by the shrinkage rate and caliber, when not unfolded, the radial ribs are folded inward, and when unfolded, the radial ribs expand the reflective net outward to form a reflective surface. This deployable antenna has the advantages of small folded size, large unfolded size, and high reliability, so it is applied to various communicatio...

AI Technical Summary

Problems solved by technology

[0005] In view of this, in order to solve the problem that the prior art requires external energy and mechanisms to open, the present invention provides a space-borne umbrella-shaped antenna structure with a self-deploying speed regulating device and its deployment method, making full use of the large deformation of the flexible structure And mechanical energy conversion law, reduce the quality and complexity of the spaceborne antenna structure, realize self-deployment, light structure, no power, self-adjusting speed, stable and reliable characteristics

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