A high performance frequency selective radome

Abstract

The invention belongs to the technical field of stealth and provides a high-performance frequency selection radar cover used for stealth of flight weapons in order to overcome the shortages of single-screen FSS (frequency selective surface) structural design in the prior art, and difficulty in achieving FSS engineering by bilateral dielectric load FSS and double-screen FSS due to complex structure and high processing difficulty. The radar cover comprises an original radar cover, a first splice dielectric layer, an ultralow dielectric constant dielectric layer, a second splice dielectric layer and a soft FSS film layer. The first splice dielectric layer, the ultralow dielectric constant dielectric layer, the second splice dielectric layer and the soft FSS film layer are molded and combined into an FSS lining from an outer layer to an inner layer, and an FSS lining layer is attached on an inner surface of the original radar cover. Due to the fact that selected cellular and foam media both belong to ultralight materials, weight of the frequency selection radar cover is not increased. The high-performance frequency selection radar cover is relatively simple in structure, process tolerance is large since design margin is large, and difficulty, cycle and cost of process are lowered.

Description

technical field [0001] The invention belongs to the technical field of stealth, and in particular relates to a high-performance frequency selective radar cover. Background technique [0002] The Radar Cross Section (RCS) of the surface of the object represents the radar detectability of the target. The smaller the RCS value, the less likely the target is detected by the radar. When missiles, aircraft and other weapons and equipment adopt homing radar terminal guidance for precision guidance, the guidance cabin will form random angle reflectors, which will become strong scattering sources and greatly increase the forward RCS of the missile. Therefore, how to reduce the RCS while realizing radar guidance has become a key issue to improve the penetration capability of flying weapons. Since the cockpit glass, radome and seeker cover are all radar transparent parts, conventional radar absorbing materials generally do not have a transparent area. Therefore, absorbing materials ca...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the shortcomings of single-screen FSS structure design in the prior art and the disadvantages of double-sided medium-loaded FSS and double-screen FSS, which are difficult to realize FSS engineering due to complex structures and difficult processes, the present invention provides a stealth aircraft for flying weapons. High Performance Frequency Selective Radome

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