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A method for preventing thermal relaxation of surrounding truss-type deployable antenna wire nets

A truss-type, cable-net technology, applied in antennas, antenna supports/mounting devices, special data processing applications, etc., can solve problems that cannot be well adapted to the space temperature environment

Inactive Publication Date: 2017-10-10
XIDIAN UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, the method in this paper is only suitable for adjustment under a single working condition, and cannot well adapt to the changing space temperature environment.

Method used

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  • A method for preventing thermal relaxation of surrounding truss-type deployable antenna wire nets
  • A method for preventing thermal relaxation of surrounding truss-type deployable antenna wire nets
  • A method for preventing thermal relaxation of surrounding truss-type deployable antenna wire nets

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Embodiment Construction

[0056] Such as figure 1 As shown in Fig. 1 , a design method for preventing the thermal relaxation of the cable net with a perimeter truss-type deployable antenna, the method realizes the compensation for the thermal relaxation of the cable net by installing a compression spring structure at the joint of the antenna truss, including the following steps:

[0057] Step 101: Determine the basic geometric parameters of the antenna, including: the aperture D of the antenna, the focal length F of the front mesh front , Back screen focal length F rear and antenna height H;

[0058] Step 102: According to the basic geometric parameters of the antenna and the geometric approximation accuracy requirements of the cable net, carry out initial grid division on the front and rear cable nets, the initial grid division includes radial grid division, three-way grid division or quasi-geodesic wire network Grid division, the initial grid division of the front and rear cable nets is used as the...

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Abstract

The invention discloses a method for preventing heat-induced relaxation of a peripheral truss-type expandable antenna wire net. In this method, a compression spring device is installed at each truss joint of the existing peripheral truss deployable antenna, so that it can adaptively compensate the tension change of the cable net caused by the thermal load on orbit. In the new design scheme, the stiffness coefficient, free elongation length, compensation margin and other structural parameters of the compression spring can be obtained through reasonable thermal simulation analysis.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, and in particular relates to a method for preventing heat-induced relaxation of a peripheral truss-type expandable antenna wire net. Background technique [0002] The peripheral truss-type deployable mesh antenna has become a form of space-deployable antenna that has attracted the attention of the aerospace community in recent years due to its light weight, small folded volume, and short period. Its structural composition mainly includes deployable peripheral trusses, Metal reflective net, front cable net, rear cable net and longitudinal adjustment cable. The front cable net is mainly used to support the laid metal reflective net, the rear cable net is mainly used for balance, and the longitudinal adjustment cable is used to adjust the tension distribution of the cable net, so that the metal reflective surface forms the required shape. [0003] In the existing design methods, the cable-ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/14H01Q15/16H01Q1/12G06F17/50
Inventor 杨东武杨癸庚段宝岩张逸群杜敬利张树新宗亚雳许万业连培园
Owner XIDIAN UNIV
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