Expandable mesh antenna based on dome-type tensegrity

Abstract

The invention discloses an expandable mesh antenna based on a dome-type tensegrity. The expandable mesh antenna comprises a wire mesh reflecting surface, a dome-type reflecting surface supporting system and a peripheral expandable truss which are coaxially arranged, the peripheral expandable truss comprises an annular main rod, and a plurality of truss units connected end to end are arranged on the main rod; the outermost ring cable boundary of the dome type reflecting surface supporting system is fixedly connected to the peripheral expandable truss, the dome type reflecting surface supporting system comprises an inner ring pressing rod circular ring, the outer side of the circumference of the inner ring pressing rod circular ring is connected with a plurality of radial rib units, the radial rib units are located in the radial direction of the inner ring pressing rod circular ring, and the radial rib units are connected through ring cables; the metal wire mesh reflecting surface covers the dome type reflecting surface supporting system to form a paraboloid structure, and the metal wire mesh reflecting surface is petal-shaped and is of a grid structure. The metal wire mesh and the deployable truss structure are combined to jointly form the deployable antenna structure, and the requirements of high storage ratio, light weight and large caliber are met.

Description

technical field [0001] The invention belongs to the technical field of on-board deployable antennas, and relates to a deployable mesh antenna based on a dome-type tensioned integral whole. Background technique [0002] Space deployable antennas are an important part of spacecraft and are widely used in communications, national defense, deep space exploration, navigation and other fields. With the continuous development of space technology and subject to the carrying capacity of launch vehicles, spaceborne deployable antennas are developing in the direction of high precision, large diameter, high storage ratio, and light weight. The deployable antenna with lighter weight and smaller storage volume can effectively save the launch cost of the spacecraft. [0003] The reflector support structure of the existing spaceborne deployable mesh antenna is generally composed of double-layer back-facing cable nets, which leads to the need to design a higher deployment height when design...

AI Technical Summary

Problems solved by technology

[0003]The supporting structure of the reflecting surface of the existing spaceborne deployable mesh antenna is generally composed of double-layer back-facing cable nets, which leads to the need to design the surrounding truss A higher deployment height meets the deployment height and volume of the double-layer back-facing cable net, which is tantamount to increasing the mass and volume of the overall antenna when it is stored, and increases the burden on the launch vehicle

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