Wave-absorbing ceramic wing rudder component based on lossy high-temperature electromagnetic periodic structure and preparation method thereof

Abstract

The invention relates to the technical field of high-temperature-resistant wave-absorbing materials, and particularly discloses a wave-absorbing ceramic wing rudder component based on a lossy high-temperature electromagnetic periodic structure. The component sequentially comprises a bearing core layer, a continuous aluminosilicate fiber reinforced oxide ceramic-based composite material surface layer, a lossy high-temperature electromagnetic periodic structure wave-absorbing functional layer sintered on the surface of the surface layer, and an oxide ceramic coating outer protective layer located on the surface of the wave-absorbing functional layer from inside to outside; the bearing core layer is made of a continuous carbon fiber reinforced ceramic matrix composite material or a continuous low-resistivity silicon carbide fiber reinforced ceramic matrix composite material. The invention further provides a preparation method of the wave-absorbing ceramic wing rudder component based on the lossy high-temperature electromagnetic periodic structure. The wave-absorbing ceramic wing rudder component can solve the problems of the traditional technical scheme, can be applied to high-speed long-time aircrafts, has the integrated functions of high bearing capacity, strong heat protection, ablation resistance, low / broadband wave absorption and the like, and can remarkably improve the survival and penetration capabilities of new-generation aircrafts.

Description

technical field [0001] The invention belongs to the technical field of high-temperature-resistant wave-absorbing materials, and in particular relates to a wave-absorbing ceramic wing rudder component based on a lossy high-temperature electromagnetic periodic structure and a preparation method thereof. Background technique [0002] Wing rudder components are an important part of the aircraft, which mainly play a key role in controlling the stability of the aircraft and adjusting the attitude. At the same time, due to the remarkable radar wave scattering characteristics of wing and rudder components, it is one of the strong scattering sources on the aircraft, which makes the aircraft easy to be detected and attacked. It is necessary to use wave-absorbing material technology to reduce its radar wave scattering characteristics and improve its survival and penetration capabilities. . As the speed of the aircraft increases, the thermal load on the wing and rudder components is in...

AI Technical Summary

Problems solved by technology

[0003] The wave-absorbing function of the metal core layer + resin-based composite heat-resistant outer layer is mainly realized by adding radar absorbers to the resin-based composite heat-resistant outer layer, but this type of structure mainly has the following problems: 1) The addition of the absorber will Significantly affect the uniformity of the material, and then affect the mechanical and thermal performance of the resin matrix composite; 2) The addition of absorbent will significantly increase the weight of the component; 3) The amount of absorbent in the composite material is limited, and is limited by the absorbent Due to the dispersion characteristics of electromagnetic parameters, it is difficult to achieve broadband wave absorption; 4) Such components are not suitable for high-speed and long-duration aircraft. There is a serious ablation problem, which causes obvious changes in the shape of the wing and rudder, resulting in a serious decline in the attitude control and guidance accuracy of the aircraft

In summary, the existing technical solutions are difficult to realize the integrated functions of heat protection, load bearing, anti-ablation, and wave absorption of the wing rudder components of future high-speed and long-duration aircraft, and a new technical solution needs to be proposed

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