A truss-type synchronous deployable antenna

Abstract

The invention discloses a truss-type synchronously deployable antenna, which is composed of an antenna wire net, a synchronously deployable mechanism and a drive assembly; the synchronously deployable mechanism is divided into a first synchronously deployable mechanism, a second synchronously deployable mechanism and a The third synchronously expandable mechanism. The antenna wire net and the driving component respectively form three types of truss-type synchronous deployable antennas with the first synchronous deployable mechanism, the second synchronous deployable mechanism, and the third synchronous deployable mechanism; under the action of the driving component, the antenna wire net The space-synchronous deployment is realized through the synchronous expandable mechanism. After the deployment is completed, under the action of the locking mechanism, the antenna as a whole is stable in a fully deployed state. The truss-type synchronously deployable antenna has the characteristics of large deployment aperture, high storage rate, high spatial synchronization deployment accuracy, and strong support rigidity. The synchronous expandable mechanism can be used in the fields of solar sail panels and retractable roof structure engineering, and the antenna can also be used in space or on the ground as reflectors or concentrators.

Description

technical field [0001] The invention relates to the field of space-borne antenna structure design, in particular to a truss-type synchronous deployable antenna. Background technique [0002] With the development of aerospace science and technology, spacecraft are becoming increasingly large and complex, especially space antennas, space-borne radars, space power stations, etc. have more and more demands for large-scale deployable structures, and related technologies are facing challenges. Unprecedented development opportunities and challenges. With the gradual development of aerospace research programs and the complexity of space systems, the space deployable structure has developed from a simple and single form in the past to a complex, multi-degree-of-freedom, and modular direction; large-scale space deployable structures have become the focus of aerospace science in recent years. Hotspots in the field of technology research. The research on large-scale space-borne deploy...

AI Technical Summary

Problems solved by technology

However, the antenna structure is a single-ring loop truss antenna, its deployment and support rigidity is small, and the deployment process is uncontrollable, and the deployment accuracy and reliability are low, which affects the performance of the antenna reflector

[0005] Invention patent CN 104319453 A proposes a "passively driven double-layer ring truss antenna mechanism". The antenna mechanism is characterized by solving the problem that the existing large-diameter single-ring ring truss antenna has low stiffness and cannot meet the rigidity requirements for use. And the drive structure of the existing ring truss antenna mechanism is complicated, and it is easy to wind up when the cable is deployed, but the precise and synchronous deployment of the antenna mechanism cannot be realized, and the deployment accuracy and reliability are low, so it is difficult to ensure that each unit of the antenna mechanism Can be launched smoothly

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