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Initial form design method of deployable offset parabolic antenna cable net structure

A parabolic antenna, cable net structure technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as poor uniformity of tension

Inactive Publication Date: 2014-04-30
XIDIAN UNIV
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Problems solved by technology

The disadvantage of this method is that the initial shape design of the cable net structure with asymmetric front and rear mesh surfaces cannot be carried out, and since the force density of all cable segments is kept equal, the uniformity of the obtained tension is still poor

Method used

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  • Initial form design method of deployable offset parabolic antenna cable net structure
  • Initial form design method of deployable offset parabolic antenna cable net structure
  • Initial form design method of deployable offset parabolic antenna cable net structure

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Embodiment Construction

[0070] Such as figure 1 As shown, an initial shape design method of a deployable offset parabolic antenna wire mesh structure, which is a peripheral truss-type deployable offset parabolic antenna wire mesh structure based on an optimization strategy of "combining form-finding and force-finding" The initial shape design method includes the following steps:

[0071] Step 101: Determine the physical aperture D of the antenna and the optical aperture D of the antenna according to the basic geometric parameters of the cable net in front of the antenna a , the effective optical aperture D of the antenna e , the focal length of the front cable net f, the offset distance p of the front cable net, and determine the height H of the front cable net front ;

[0072] Step 102: According to the cutting method of the offset paraboloid, the circular physical diameter, and the surrounding support structure of the cable net at the same height, the initial shape of the front cable net is obt...

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Abstract

The invention discloses an initial form design method of a deployable offset parabolic antenna cable set structure. In the method, the cable net structure initial form design includes front cable net design and rear cable net design. During the front cable net design, coordinates of front cable net nodes and cable force act together as design variables, and tensions of all internal cable sections of the front cable net are equal and the ratio of the maximum tension of the boundary cable to the maximum tension of the internal cable section is minimum on conditions that all boundary nodes are fixed and all the internal nodes are on the ideal paraboloid, in force-balance states and capable of covering effective optical aperture completely. During the rear cable net design, the minimization of the ratio of the tension level of the rear cable net to that of the front cable net is achieved on the condition that an adjusting cable keeps vertical and the relation among the total height of the antenna, the height of the front cable net and the minimum length of the adjusting cable is met. Therefore, node coordinates and cable force of the front cable net and the rear cable net are acquired to complete the initial form design.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, and in particular relates to an initial shape design method of an expandable offset parabolic antenna wire mesh structure, which is applied to the initial shape design of the offset parabolic antenna wire mesh structure. 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 reflection net, front cable net, rear cable net and longitudinal adjustment cable structure. 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 front cable net so that the metal reflective surface forms...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 杨癸庚段宝岩杨东武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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