Stealth Coatings for Radar Absorption in Aircraft

A composite wave-absorbing stealth coating that enhances radar-absorbent materials (RAM) by incorporating barium ferrite and nanometer ZrO2 ceramic powders. The coating combines these materials with low-temperature glass powder for plasma-sprayed applications, enabling high-performance radar-absorbent surfaces with enhanced thermal stability and durability.

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A multi-layer film for stealth and thermal management that enables comprehensive protection across multiple infrared and visible spectral bands. The film comprises a substrate, a mid-infrared selective emission layer, a short-wave infrared control layer, and a near-infrared control layer arranged sequentially from the inside to the outside. This configuration enables effective infrared stealth while simultaneously addressing thermal management requirements through selective emission control and radiation dissipation.

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A lightweight, heat-resistant, and heat-insulating stealth coating comprising a combination of nanostructured fillers and hollow microsphere particles. The coating is prepared through a novel process that integrates these materials into a uniform dispersion through a multi-step dispersion process, followed by controlled drying and brushing. The resulting coating exhibits superior thermal resistance and wave-absorbing properties compared to conventional stealth coatings, with specific performance metrics including density, thermal conductivity, and wave absorption characteristics.

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Stealth coating for military aircraft that achieves radar invisibility through a multi-layered film structure. The coating comprises a substrate coated with a vacuum-deposited laminate of multiple ultra-fine layers, each optimized for specific stealth functions. The layers are engineered to provide temperature resistance, wear resistance, low drag, and broadband radar absorption across visible and infrared spectrums. The coating combines the benefits of conventional stealth materials while overcoming their limitations through its unique multi-layered design.

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A composite coating for aircraft surfaces that enhances stealth through both infrared and radar absorption. The coating consists of a nano-structured surface layer with integrated infrared absorption properties and a transparent adhesive layer that connects the surface layer to a light-absorbing paint finish. This dual-layer design enables both infrared absorption and radar absorption, providing comprehensive stealth protection against detection by radar and infrared sensors.

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A stealthy aircraft carrier design incorporating advanced radar-absorbent materials (RAM) with integrated acoustic protection. The carrier features a dual-layered surface coating system comprising a polyurethane foam layer and a graphene-based radiation-absorbing layer. This composite coating system provides both radar-absorbent and acoustic protection, enabling the carrier to evade detection while maintaining stable buoyancy and maneuverability. The system integrates a permanent floating airbag system for enhanced survivability in extreme environments.

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A three-dimensional diffuse reflection and wave-absorbing coating for aircraft stealth that combines the principles of planar stealth coatings with the advantages of three-dimensional wave absorption. The coating comprises a rigid polyurethane foam layer with integrated polyurea waterproof coatings, which provides both structural integrity and high-performance wave absorption. The polyurea layer generates electronic polarization through surface electronic polarization, enhancing the coating's radar-absorbent properties. This multi-layered approach enables a comprehensive solution for aircraft stealth that addresses both reflection reduction and wave absorption capabilities.

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A novel radar-absorbing paint for military stealth technology that enables aircraft to evade detection by radar systems. The paint employs a unique composition of buckminsterfullerene particles with a specially designed elastic base, which provides enhanced radiation retention properties. The buckminsterfullerene particles are incorporated into a high-temperature, flame-resistant paint that maintains its structural integrity even at supersonic speeds. This paint achieves radar absorption while maintaining structural integrity, enabling aircraft to operate at low altitudes without being detected by radar systems.

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Electromagnetic wave unidirectional conductive coating for aircraft surfaces that combines stealth radar-absorbing properties with electromagnetic wave transmission control. The coating comprises a surfactant-based dispersion of nanometer copper-zinc powders, nanometer ultrafine carbon black, and graphene, with an adhesion promoter and anti-settling agent. The dispersion is prepared through a surfactant-free dispersion process, followed by grinding to achieve a fineness below 25 microns. The dispersion is then formulated with a surfactant, anti-static agent, and adhesion promoter, and filtered and packaged for application on aircraft surfaces.

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A stealth coating for aircraft surfaces that combines high-temperature thermal insulation with full-frequency wave absorption. The coating comprises a reinforced chopped fiber matrix, pressure-resistant hollow microspheres, and a wave-absorbing agent. The reinforced fiber matrix provides excellent thermal insulation, while the pressure-resistant hollow microspheres enhance wave absorption at frequencies above 1 GHz. The wave-absorbing agent further enhances the coating's radar-absorbing properties. This integrated coating enables aircraft surfaces to achieve both thermal protection and radar stealth capabilities.

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A multi-band stealth coating for aircraft that achieves both electromagnetic and acoustic stealth capabilities. The coating combines a hybrid nanomaterial system comprising a mixture of iron oxide nanoparticles and organic silicate with a cross-linked polyurethane matrix. The nanomaterials provide broadband absorption across electromagnetic and infrared frequencies, while the polyurethane matrix enhances mechanical properties and adhesion. The coating exhibits improved durability and corrosion resistance compared to traditional stealth coatings, enabling simultaneous electromagnetic and acoustic stealth performance.

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A method for preparing stealth coatings for aircraft that addresses conventional limitations in radar-absorbent materials (RAM). The method enables the creation of high-performance, low-weight stealth coatings through the integration of advanced nano-absorbent materials with conventional aircraft coatings. The nano-absorbent components provide exceptional radar-absorbance characteristics while maintaining superior durability and weather resistance compared to traditional RAM formulations. This integrated approach enables the development of ultra-lightweight, high-performance stealth coatings that meet the stringent requirements of modern aircraft applications.

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A method for preparing stealth coatings that addresses common challenges in aerospace applications such as moisture, salt spray, high temperature, and mildew resistance. The method employs a nano-absorbent coating comprising inorganic nano-materials and organic polymer materials, where the nano-materials are precisely controlled to achieve optimal absorption performance. This nano-absorbent coating system enables the creation of stealth coatings that maintain their performance characteristics across a wide range of environmental conditions, including extreme temperatures and humidity levels, while maintaining their radar-absorbent properties.

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A multi-functional stealth coating for aircraft that simultaneously absorbs and attenuates electromagnetic waves and sound waves, reducing reflection and scattering. The coating comprises a matrix of acrylic resin, polyurethane, and aqueous resin, with specific additives including nickel, isophorone diisocyanate, zinc chromate, triethanolamine, and zinc oxide. The coating achieves infrared reflectance and thermal control through its unique composition and processing, enabling effective stealth performance across multiple electromagnetic bands.

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A stealth coating for aircraft that combines broadband electromagnetic absorption with multi-band functionality. The coating comprises a matrix of hydroxy acrylic resin, nitrile rubber, polypropylene emulsion, and dispersant, with added components like zinc oxide, chromium oxide, and calcium oxide. The matrix is formulated with a specific ratio of these components to achieve optimal absorption and reflectivity characteristics. The coating is prepared through a multi-step process involving polymerization, thermal processing, and dispersion, resulting in a material with enhanced broadband absorption and multi-band functionality.

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A water-based stealth coating for aircraft that achieves high absorbing performance through a novel nanostructured polymer matrix. The coating combines a polymer matrix with nanostructured inorganic particles to create a broadband absorbing material that covers electromagnetic spectrum frequencies from radar to infrared. The nanostructured particles enhance absorption while maintaining low surface density and high mechanical properties. This coating achieves superior radar-absorbing performance compared to traditional water-based coatings while maintaining the advantages of water-based formulations.

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A high-temperature absorbing coating with a multilayer structure that maintains wave absorption performance in extreme environments. The coating comprises a substrate layer, a thermal insulation layer on the surface, and an absorbing layer. The thermal insulation layer prevents temperature fluctuations, while the absorbing layer ensures wave absorption properties. This multilayer design enables continuous operation in high-temperature conditions, enabling radar stealth applications where conventional coatings fail.

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