Forming method for thin-wall changeable thickness composite antenna cover

Abstract

The invention discloses a forming method for a thin-wall changeable thickness composite antenna cover. The method comprises the steps that firstly, enhanced body fabrics including an outer equal-thickness enhanced body, an inner equal-thickness enhanced body, a top changeable thickness enhanced body and a root changeable thickness enhanced body are prepared; secondly, the enhanced body fabrics are arranged in a forming die male die, and integral sewing is conducted through fiber yarn the same as the enhanced body fabrics in material; thirdly, die assembly is conducted, and after the die is subjected to vacuum pumping, heating is conducted to the resin injection temperature; fourthly, resin is heated to the injection temperature, and the resin is injected into a die cavity; fifthly, curing forming is conducted on the antenna cover in an oven; sixthly, the die is dismounted, and the antenna cover is taken out; and seventhly, the demoulded antenna cover is machined. The method achieves the purpose about precise forming of the thin-wall changeable thickness antenna cover, achieving is convenient, and the manufacturing cost is low. The overall sewing method is adopted, reliable fixing of the thickened area fabrics is achieved, and inter-laminar shear strength of the antenna cover is increased.

Description

technical field [0001] The invention relates to the technical field of resin-based composite material radome preparation, in particular to a method for forming a thin-walled variable-thickness composite material radome. Background technique [0002] The radome is a key component of the guidance system, and it is a multifunctional wave-transparent structure used to ensure the normal operation of the antenna system in the radome in various operating environments. The radome not only needs to have good electrical performance in the antenna working frequency band, but also needs to have the functions of load bearing, impact resistance, heat insulation and rain erosion resistance. [0003] In order to improve the anti-interference ability and guidance accuracy, the guidance technology is developing in the direction of millimeter-wave guidance, and in the millimeter-wave frequency band, it is designed according to the half-wave wall method, and the wall thickness of the radome use...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a thin-wall variable-thickness composite material radome forming method, which adopts a combined reinforcement structure of woven 2D fabric + woven 2.5D fabric + integrally woven capping fabric to solve the problem of thin-wall variable-thickness radome. The problem of precision molding, and easy to realize, low manufacturing cost

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