Integrated skin capable of achieving heat shielding, heat insulation and stealth and preparation method of integrated skin

Abstract

The invention provides an integrated skin capable of achieving heat shielding, heat insulation and stealth and a preparation method of the integrated skin. The integrated skin comprises a wave-transparent ceramic-based composite material, an electrical loss-type wave-absorbing heat-insulating integrated layer, a transition layer, an organic wave-absorbing layer, and a metal structural layer from the outside in, wherein the functional layers are connected through ceramic-based composite bolt members so as to form the skin structure. The skin has the advantages that the stealth performance, heatshielding and heat insulation performance and structural load-carrying capacity are designed comprehensively and optimally, insufficient broadband wave-absorbing performance, low structural strengthand other problems of stealth structural materials are solved effectively under high temperature conditions, and finally the design of the integrated skin capable of achieving the stealth function isachieved; the broadband stealth performance is achieved through the design of a multi-layer wave-absorbing periodic structure or a resistive film, and the electrical loss-type high temperature-resistant wave-absorbing structure with an heat insulation function is designed on the outer layer of the integrated skin capable of achieving heat shielding, heat insulation and stealth, so that heat insulation, cooling and absorption of high-frequency electromagnetic waves are achieved; and the working temperature of an inner-layer magnetic wave-absorbing material is made lower than the Curie temperature of the inner-layer magnetic wave-absorbing material, and finally the integrated skin capable of achieving heat shielding, heat insulation and stealth is obtained.

Description

technical field [0001] The invention belongs to the technical field of high-speed aircraft stealth, and in particular relates to an anti / heat-insulating stealth integrated skin and a preparation method thereof. Background technique [0002] During the flight of high-speed aircraft, the outer surface temperature will exceed 600°C due to severe aerodynamic heating, and the maximum temperature can reach more than 1400°C. Strong scattering components such as air intakes, wings, cabins, and tails of high-speed aircraft are all under high-temperature aerodynamic heating conditions. Down. Stealth performance is an important indicator of future high-speed aircraft, but the shape of high-speed aircraft is constrained by various design requirements such as overall, structure, and aerodynamics. The application of shape stealth technology is greatly restricted. The most important and effective technical approach of strong scattering. [0003] For magnetic loss materials, demagnetizati...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the stealth scheme of the conventional absorbing structure cannot be applied to the high-temperature environment of high-speed flight and the low-frequency stealth performance of the electric loss type high-temperature resistant absorbing material or metamaterial is poor, the inventor proposes a Ultra-broadband absorbing structure with thermal performance and stealth performance

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