The invention provides a wide-speed-range hypersonic aircraft airfoil profile multi-objective optimization design method and a compromise airfoil profile, and belongs to the technical field of aircrafts. According to the method, a CST method is adopted as an airfoil profile parameterization method to describe the upper surface and the lower surface of the airfoil profile; determining a design variable, a target function and a constraint condition so as to determine an optimization problem; solving the obtained optimization problem by using a multi-objective optimization algorithm, and selecting the required airfoil profile on the leading edge; the compromise airfoil profile obtained by the method can give consideration to lift and resistance characteristics at subsonic velocity, supersonic velocity and hypersonic velocity. The airfoil profile is characterized in that the radius and the thickness of the front edge are small, the position with the maximum thickness moves backwards to 50%, the airfoil profile is approximately bilaterally symmetrical, the whole airfoil profile moves upwards relative to a chord line, the lower surface is straight, the front edge and the rear edge of the lower surface are concave inwards, and the camber is increased. The performance of the wide-speed-range hypersonic aircraft airfoil profile obtained through the method is obviously improved under all target working conditions.

    提供一种宽速域高超声速飞行器翼型多目标优化设计方法及折中翼型,属于飞行器技术领域,该方法采用CST方法作为翼型参数化方法对翼型上下表面进行描述;确定设计变量、目标函数和约束条件从而确定优化问题;使用多目标优化算法求解所得优化问题,在前沿上选择所需的翼型;由此种方法得到的折中翼型,可以兼顾亚声速、超声速和高超声速时的升力和阻力特性。翼型外形特征为:前缘半径和厚度较小,最大厚度位置后移至50%处,且翼型近似左右对称,翼型整体相对弦线上移,下表面较为平直,且下表面的前缘和后缘内凹,增大了弯度。本发明得到的宽速域高超声速飞行器翼型在各目标工况其性能都得到了明显提升。


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    Titel :

    Wide-speed-range hypersonic aircraft airfoil profile multi-objective optimization design method and compromise airfoil profile


    Weitere Titelangaben:

    宽速域高超声速飞行器翼型多目标优化设计方法及折中翼型


    Beteiligte:
    LI CHUNNA (Autor:in) / GUO XIAO (Autor:in) / YANG LIANBO (Autor:in) / FANG YUAN (Autor:in) / GONG CHUNLIN (Autor:in)

    Erscheinungsdatum :

    2022-12-20


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    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 / B64C AEROPLANES , Flugzeuge / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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