A kind of radome structure, its forming method and its mold

Abstract

An antenna housing structure comprises a housing body, a plurality of embedded inserts and a plurality of connection studs, wherein the housing body is made of silicon-contained quartz fiber reinforced aryne composite materials and prepared through a resin transfer molding technique; the multiple embedded inserts are made of low-expansion alloy steel materials and arranged at the root of the housing body, the embedded inserts are woven in a quartz fiber reinforcement body before being formed, the embedded inserts and the housing body are combined into a whole after the embedded inserts are formed, and a threaded hole is formed in the end face of each embedded insert; the multiple connection studs are made of high-strength steel materials, external threads are arranged at the two ends of each connecting stud, the external thread at one end of each connection stud is assembled in the threaded hole of the corresponding embedded insert of the housing body, and the external thread at the other end of each connection stud is connected with a cabin. The antenna housing structure and the forming method and the die thereof have the advantages that by the adoption of the resin transfer molding technique and the embedded inserts, the problem that transition connection between a traditional antenna housing and a cabin can only be achieved through low-expansion alloy steel connection rings is solved, the structural weight is reduced substantially, and the connection reliability is improved.

Description

technical field [0001] The invention relates to the technical field of resin-based composite material radome design and preparation, in particular to a radome structure, a forming method and a mold thereof. Background technique [0002] The radome is a key component of the guidance system. It protects the guidance system from the harsh environmental conditions during aerodynamic flight. It is also a link in the guidance control loop. It must ensure that the microwave energy of the antenna is transmitted and received without distortion. Therefore, the radome is a special product integrating aerodynamics, structure and electrical performance, which has a decisive influence on the performance of the guidance system. [0003] Quartz ceramic material is a material often used on ultra-high-speed radome at present. Compared with organic composite materials, its density is higher, and quartz ceramic material is difficult to drill or tap. The low-density low-expansion alloy steel co...

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Problems solved by technology

[0007] Patent CN104149228A "An Integrated Forming Mold and Forming Method for FRP Radome" introduces a method for forming a FRP radome with embedded round nuts. The parts are connected with the cover body by bonding in the molding process; patent CN103286957A "Preparation method of FRP, FRP radome and its preparation" introduces a preparation method of FRP radome, by adding fillers in the resin, improved Mechanical strength, reduced dielectric loss, molding process is hand lay-up process, there is no metal insert in the radome; patent CN103553696 A "Manufacturing method of high temperature and ablation resistant radome cover" introduces a fiber-reinforced ceramic matrix The molding method of composite materials adopts the method of impregnation and sintering molding. The molding method is quite different from that of organic composite radome, and there is no metal insert in the radome; the paper "Manufacture and Application of Missile Radome Composite Connecting Ring "Technical Research" introduces a manufacturing method of a carbon fiber reinforced epoxy composite connecting ring, which uses a lightweight composite connecting ring instead of a low-expansion alloy steel connecting ring, reducing the weight of the connecting ring, but the radome and the connecting ring The ring is two independent structural parts, and the two need to be glued before they can be connected to the cover body. The integration of the radome and the connecting ring has not been realized.

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