A cable net parabolic cylindrical deployable antenna device based on a double scissors truss mechanism

Abstract

The invention belongs to the technical field of antennas and discloses a cable net parabolic cylindrical deployable antenna device based on a double-scissor truss mechanism. The metal mesh reflector adopts soft gold-plated molybdenum wires or tungsten wires to be woven into a mesh. The supporting cable net comprises transverse flexible cables, longitudinal flexible cables and vertical adjusting cables, each longitudinal flexible cable is parabolic, and is woven with the transverse flexible cables to form a front and a rear parabolic cylindrical net surface, and the vertical adjusting cables are connected with the front and the rear net surfaces; A parabolic cylindrical support cable net formed by braiding flexible cables; A metal wire mesh is fix on that cable net to form a parabolic cylindrical reflecting surface, and the shape surface accuracy of the metal wire mesh reflecting surface is adjust by adjusting the force on the flexible cables in the supporting cable net; The deployabletruss is used to suspend the supporting cable network to deploy the antenna. The deployable truss mechanism is integrally square, and is formed by a plurality of deployable units A in series. The invention does not need to add a complex driving mechanism and an additional synchronous mechanism, has a simple and reliable structure, and reduces the complexity of antenna design.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a cable net parabolic cylinder expandable antenna device based on a double scissors truss mechanism. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: With the rapid development of aerospace science and technology, spaceborne antennas, as one of the key equipment of satellite systems, have played an important role in space missions such as satellite communications, positioning and navigation, and deep space exploration. important role. In order to meet the requirements of high frequency domain, high gain, and high power, spaceborne antennas gradually tend to develop in the direction of large aperture. However, since the storage space and load of the existing transmitting equipment have certain limitations on the transmission of antennas with large apertures, the antennas with large apertures must be mad...

AI Technical Summary

Problems solved by technology

[0005] (1) The traditional parabolic antenna is composed of a rigid member supporting an integrated rigid body reflector. The overall volume of the antenna is large and heavy, and the carrying capacity of the vehicle cannot meet the reflection requirements, so it cannot be directly used as a spaceborne antenna

[0006] (2) At present, the deployable parabolic antenna is either a deployable solid surface or an air-inflated one. The expandable solid surface antenna has a low storage rate, and it is difficult to meet the large-scale requirements of the space-borne antenna; and poor stability

Images