Splicing type unfolding device for planar antenna of aerospace craft

Abstract

The invention discloses a splicing type unfolding device for the planar antenna of an aerospace craft. The device comprises an aerospace craft platform, the planar antenna, a mounting support, driving devices mounted on the aerospace craft platform, unfolding device driving rods and unfolding device driven rods, wherein the planar antenna is arranged in an H-shaped manner relative to the aerospace craft platform in a folded state, and the left wing and the right wing of the planar antenna are symmetric about the aerospace craft platform; the unfolding device driving rods and the unfolding device driven rods are connected with the planar antenna; the driving devices drive the unfolding device driving rods, the unfolding device driven rods and the planar antenna to move, so as to enable the planar antenna to complete folding and unfolding moving processes in two manners of lateral moving and rotating, finally to reach an appointed position of an unfolded state, to rotates 90 degrees relative to the aerospace craft platform from a folded position to an unfolded position, and to laterally move for a certain distance in the direction of the aerospace craft platform. According to the splicing type unfolding device for the planar antenna of the aerospace craft, antenna cantilevers of the aerospace craft platform can be reduced or eliminated.

Description

technical field [0001] The invention relates to the technical field of aerospace vehicles, in particular to a splice-type deployment device for planar antennas of aerospace vehicles. Background technique [0002] According to the electrical performance and imaging quality and accuracy requirements of planar phased array antennas, the "H" configuration is often used when the spacecraft platform is folded. For planar antennas, this configuration makes the antenna a cantilever beam In this state, it cannot be fixed with the spacecraft platform, and the force of the antenna is bad; when the antenna is unfolded, it is necessary to ensure the seam distance between the planar antennas. In order to solve the problem that the fundamental frequency of the planar antenna is too low when the plane antenna is folded, most of the domestic and foreign aerospace vehicles currently use the following methods: [0003] (1) Compress the width between the antenna mounting surfaces on both sides...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a splicing type deployment device for the planar antenna of an aerospace vehicle, so that the "H" configuration spacecraft platform can reduce or eliminate the antenna cantilever, and effectively solve the problem of "H" configuration planar antennas in the folded state. The problem that the base frequency of the antenna is too low due to too long cantilever solves the problems of non-universalization of the spacecraft platform, increased antenna weight and deployment reliability caused by reducing the antenna cantilever in the prior art

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