Expandable mechanism of space plane thin film antenna

A technology of unfolding mechanism and plane, which is applied in the direction of folding antenna and rotating antenna, which can solve the problems of limited expansion aperture of space planar film antenna and low storage of expandable mechanism, and achieve better synchronization effect and stable driving scheme

Active Publication Date: 2017-12-08
XIDIAN UNIV
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to propose a design method for the expandable mechanism of the spatial planar film antenna with a large storage ratio, aiming at the problems of limited deployment diameter and low storage ratio of the expandable mechanism of the current space planar film antenna

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  • Expandable mechanism of space plane thin film antenna
  • Expandable mechanism of space plane thin film antenna
  • Expandable mechanism of space plane thin film antenna

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Embodiment Construction

[0042] The invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for any limitation on the invention.

[0043]As shown in Fig. 1(a), Fig. 1(b) and Fig. 1(c), the expandable mechanism of the space planar film antenna of the present invention includes an expandable mechanism 2, and the Flat film 1, the cylindrical film in the folded state is placed inside the expandable mechanism in the folded state, and the boundary of the film is stretched in the middle of the rigid frame by the dragging cable. During the unfolding process of the rigid frame, the cylindrical film is pulled by the dragging cable to rotate and expand The expanded shape is a rigid regular polygon.

[0044] As shown in Figure 2(a), Figure 2(b) and Figure 2(c), the unfolded object is the plane of the plane film 1, and there are many folding lines distributed on the film surface, and the plane film 1 is first folded along the ...

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Abstract

The invention discloses an expandable mechanism of a space plane thin film antenna. The expandable mechanism comprises the expandable mechanism, and a plane thin film connected with the expandable mechanism through a connecting rope; rigid frames which are hinged end to end, a pair of short synchronous rods connected with the rigid frames, a pair of connecting rods and a pair of hinged long synchronous rods are arranged on the expandable mechanism to form an expandable mechanism framework; the pair of the rigid frames, the pair of short synchronous rods and the pair of long synchronous rods are hinged through annular connectors; the long synchronous rods are hinged with the rigid frames, the short synchronous rods and the rigid frames through radial connectors; the annular connectors and the radial connectors are provided with pulleys; a pulling rope winds the pulleys on the annular connectors and the radial connectors in sequence to form a closed loop; the head and tail ends of the pulling rope are connected with a motor shaft of a satellite; and the expandable mechanism can be expanded under driving of a motor winding-unwinding pulling rope on the satellite. The expandable mechanism can be folded by adopting an out-of-plane two-dimensional folding mode, so that the storage ratio and the expanded caliber area are greatly improved, and therefore, the expandable mechanism can be more suitable for application of large-scale and even super-large-scale plane thin films.

Description

technical field [0001] The invention belongs to the field of a space flexible antenna expandable mechanism, in particular to a design scheme of a space planar thin film antenna expandable mechanism. Background technique [0002] Space-based radar is capable of long-distance, high-precision, all-weather detection of targets, and is a very important national defense equipment. With the continuous progress of radar technology, large aperture is an important direction of its development. The thin-film structure is light in weight and small in volume, and has become the preferred structure of space-based radar, and has been extensively studied by developed countries in the world. Among them, the deployment mechanism with large storage ratio and high reliability is an important basis for ensuring the normal operation of the film antenna. Therefore, it is of great significance to carry out the design work of the deployable mechanism with a large storage ratio. [0003] The curren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/08
CPCH01Q1/08H01Q1/084
Inventor 曹鹏保宏段宝岩张逸群
Owner XIDIAN UNIV
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