An airborne knife radome and its precise manufacturing method

Abstract

The invention discloses an airborne knife-shaped radome and a precise manufacturing method thereof. It consists of an inner surface layer, a functional layer, a bottom plane layer, a seam layer and an outer surface layer. The inner surface layer, the bottom plane layer, the seam layer and the outer surface layer are composed of high-strength glass fiber prepregs of different specifications. The functional layer is made of different materials such as high-strength glass fiber prepreg, metal matrix, and nomex honeycomb to meet various functions such as broadband, high wave penetration, and stealth. Layer, bottom plane layer and outer surface layer are laid on the core mold in sequence, then the outer mold is assembled, and the vacuum bag is sealed, and the vacuum system and oven are used to realize heat curing and forming into a whole, and the layering method and laying sequence are set. , can realize high-speed blanking and precise prefabrication of different layers, and adopt the method of combining metal outer mold and silicone rubber core mold to ensure the dimensional accuracy of the airborne knife radome and reduce the process cost.

Description

technical field [0001] The invention relates to a radome and a manufacturing method thereof, in particular to an airborne knife-shaped radome with the characteristics of high strength, wide frequency, high wave penetration and stealth function and its precise manufacturing method. Background technique [0002] The blade antenna has the advantages of wide frequency band and small size, and is widely used as a communication antenna in aircraft communication systems. On the other hand, after the airborne antenna is installed on the aircraft platform, it will affect the distribution of the center of gravity, aerodynamic performance and stealth performance of the aircraft. When the antenna is installed on the airframe, as the load of the aircraft, the local weight of the aircraft will be increased, which will change the distribution of the center of gravity of the original aircraft, which will affect the balance, safety and maneuverability of the aircraft. Therefore, it should be...

AI Technical Summary

Problems solved by technology

Traditional radome adopts hand-lay-up molding process, the preparation process has high resin content, which is prone to surface defects and requires a lot of follow-up repair work, which affects the mechanical strength and external dimensions of radome products, resulting in poor weight consistency, difficult assembly, and environmental problems. Problems such as test cracking do not meet the application requirements of the airborne environment

Moreover, the traditional hand lay-up process is difficult to achieve high-precision control, and cannot meet the tolerance requirements of high-precision electrical thickness design such as stealth functions

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