Heterogeneous heterogeneous conformal low rcs airborne radome

Abstract

The invention discloses a heterogeneous heterogeneous conformal low RCS airborne radome, which relates to the technical field of radar stealth. The present invention realizes one of the following technical solutions: the non-wave-transparent area outside the central wave-transparent area of ​​the skin cover (1) conforms to the outer skin of the aircraft, and jointly forms a wave-transparent diamond-shaped cover with heterogeneous and heterogeneous curved surfaces, and the wave-transparent The central wave-transparent area of ​​the diamond-shaped cover is the wave-transparent layer of S glass fiber composite epoxy resin composite material, and the non-wave-transparent area outside the wave-transparent layer is the non-wave-transparent layer of carbon fiber composite epoxy resin material, and the wave-transparent layer passes through the seamless The non-wave-transparent layer is coplanarly connected to form a metal diamond-shaped transition ring (2), which is connected to the skin cover and connected to the array antenna body (6), and the wave-transparent area and the non-wave-transparent area are jointly covered by the conformal radome of the array antenna body components. The invention solves the problem of thermal expansion and cold contraction between different materials existing in heterogeneous heterogeneous radome. It has conformal shape with the outer skin of the aircraft, low RCS, simple structure, and antenna.

Description

technical field [0001] The invention relates to the technical field of low radar cross-section (RCS) radar stealth, in particular to a heterogeneous heterogeneous conformal low RCS airborne radome. Background technique [0002] The antenna is an electromagnetic field radiator. While reducing its RCS, it must also ensure the radiation characteristics of the antenna. This is also a pair of contradictions, and a compromise solution is required. Due to the above characteristics, the above-mentioned two methods of shape stealth technology and wave-absorbing material technology cannot be used for the reduction of the RCS of the antenna. However, the radar cross section generated by the antenna cannot be ignored. From the point of view of rays, the scattered field includes the reflection on the surface of the object due to the sudden change of the medium wave impedance, and the diffraction caused by the discontinuity of the surface of the object such as the edge and the spire. Fr...

AI Technical Summary

Problems solved by technology

Due to the inconsistency of the thermal expansion coefficients of the two materials, stress will be generated at the junction due to the influence of temperature. If the stress is too high, the outer absorbing material or paint layer will be torn and cracks will be formed, which will affect the appearance and environmental protection ability.

Images