Method for preparing pre-tension membrane structure antenna

Abstract

The invention relates to a method for preparing a pre-tension membrane structure antenna. The method comprises the following steps: designing a membrane surface into a base membrane and electric membranes, splicing the base membrane and forming the electric membranes; marking out a bottom membrane according to a designed paste range, pasting the electric membranes; processing catenaries, splicing auxiliary strengthening plates, positioning the membrane surface by utilizing installation holes of a support framework of the membrane antenna and placing the first membrane surface on a corresponding position of the support framework; reversely loading pretightening force on the long side of the membrane surface by utilizing auxiliary loaded ropes and the support of the support framework, pre-tensioning tension ropes by an adjustment device and adjusting the tension ropes to designed positions for splicing and fixing; and installing a dielectric Kevlar / Nomex honeycomb panel so as to finally realize an antenna array surface. In the method, a phased-array antenna array surface is realized through a membrane structure; the weight of a traditional phased-array antenna structure is lightened; and the method provided by the invention has the characteristics that the pre-tension membrane structure antenna is capable of being continuous loaded; the membrane tension can be accurately controlled, the operation is convenient, a special membrane tying tool is not needed, and the like.

Description

technical field [0001] The invention relates to a preparation method of a pretensioned film structure antenna, which belongs to the technical field of space antennas as a way to realize the formation of space light-weight film antenna arrays. Background technique [0002] According to the working requirements of the film antenna, the surface accuracy of the full-array unfolded state requires that the surface accuracy of the antenna sub-array is less than the designed root mean square value, and each sub-array is composed of three layers of film, so the flatness of the three-layer film after forming is required The root mean square value of the design is achieved, and the parallelism error and position error between layers are required to be smaller than the design value. In the thermal environment where the film works in space, due to the large thermal expansion coefficient of the film surface material, it will cause the relaxation of the film surface tension. Therefore, the...

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Problems solved by technology

[0003] At present, it is a typical inflatable frame structure antenna in foreign countries. This antenna structure is mainly composed of an inflatable expandable frame, a film, and a rope support system. The expandable frame structure is folded during launch and unfolded into a working state after entering orbit. , this kind of frame cannot use the method of reverse loading to shape the membrane surface, and the inflatable deployed antenna has no technical basis in China at present

[0004] Another typical film structure antenna supported by a rigid frame in foreign countries, this frame uses a set of array surface precision adjustment system to adjust the membrane surface, but the precision adjustment system used is more complicated

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