考虑涂敷的翼型气动高频电磁隐身一体化设计（投“2024高性能无人机关键技术”专刊。）

doi:10.7527/S1000-6893.2024.29874

Abstract

Abstract: Stealth coating design is the key technology and necessary measure for stealth performance of advanced combat aircraft. The traditional coating design mainly depends on engineering experience,and lacks systematic research on coating design, which leads to the unclear relationship between stealth coating design and aerodynamic characteristics of aircraft, and it is difficult to achieve integrated optimization of aircraft aerodynamics, stealth, weight, use and maintenance. In order to solve the above problems, firstly, this paper takes the symmetrical airfoil NACA65013 as the research object, and compares and analyzes the effects of coating thickness and position on its aerodynamic, stealth and weight characteristics. It is found that the coating position and thickness have great influence on the aerodynamic, stealth and weight characteristics of the airfoil, and there are obvious contradictions among them. On this basis, according to the requirements of aerodynamic, stealth and weight design, the optimal coating area is selected, and then the aerodynamic stealth optimization design of airfoil considering the influence of coating is carried out,and compared with the aerodynamic stealth optimization design results of airfoil shape without coating. The results show that the forward RCS of aerodynamic stealth design results considering coating is one order of magnitude lower than that of airfoil shape without coating, and it is more than 90% lower than that of the initial airfoil. The research work in this paper provides an efficient and reliable design method for the fine design of aircraft aerodynamic stealth shape and coating material, which has great theoretical and engineering value.

Key words: aerodynamic/stealth optimization, Method of moments, Impedance boundary conditions, Radar absorbing material coating, Flying wing layout airfoil

CLC Number:

V211.3

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Integrated aerodynamic and high frequency electromagnetic stealth design of airfoil considering coating

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