The invention belongs to the field of aircraft design, and relates to a fighter airfoil optimization design method considering aerodynamic/stealth, which comprises the following steps: step 1, selecting an initial airfoil, constructing an original three-dimensional model of a large sweepback delta wing, and generating a CFD (Computational Fluid Dynamics) grid; 2, determining an optimized profile, arranging a multi-frame overlapped FFD control frame according to the optimized profile for parameterization, and determining a design variable; step 3, establishing a mathematical model of an optimization problem; 4, high-precision flow field/electromagnetic field calculation is carried out, a flow field/electromagnetic discrete adjoint equation is constructed and solved, and an objective function and gradient information are obtained; and 5, carrying out optimization solution on the optimized mathematical model in the step 3 by adopting a sequential quadratic programming optimization algorithm to obtain the optimized large-sweepback delta wing shape and an airfoil family at the optimized section. According to the method, the airfoils with multiple spanwise positions and consideration of pneumatic/stealth/wide speed range can be designed from the original appearance, and the airfoil family of the fighter is formed, so that the design efficiency of the next generation of fighter is improved.

    本发明属于飞机设计领域,一种兼顾气动/隐身的战斗机翼型优化设计方法,包括如下步骤:步骤1、选择初始翼型,构建大后掠三角翼原始三维模型,生成CFD网格;步骤2:确定优化剖面,按优化剖面布置多框重叠FFD控制框进行参数化,确定设计变量;步骤3、建立优化问题的数学模型;步骤4、高精度流场/电磁场计算,并构造求解流场/电磁离散伴随方程,获取目标函数及梯度信息;步骤5、采用序列二次规划优化算法对步骤3的优化数学模型进行优化求解,获得优化后的大后掠三角翼外形以及优化剖面处的翼型族。通过本发明可从原始外形出发设计出多个展向位置的兼顾气动/隐身/宽速域的翼型并形成战斗机的翼型族,提高下一代战斗机的设计效率。


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    Titel :

    Aerodynamic/stealth fighter airfoil optimization design method and wide-speed-range airfoil family


    Weitere Titelangaben:

    兼顾气动/隐身的战斗机翼型优化设计方法及宽速域翼型族


    Beteiligte:
    ZHAO HUAN (Autor:in) / DENG JUN (Autor:in) / GAO ZHENGHONG (Autor:in) / HUANG JIANGTAO (Autor:in) / ZHAO KE (Autor:in) / ZHOU LIN (Autor:in) / XIA LU (Autor:in) / ZHANG WEI (Autor:in) / FENG CONG (Autor:in)

    Erscheinungsdatum :

    2024-03-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B64C AEROPLANES , Flugzeuge / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen



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