The invention discloses a wide-speed-range thin airfoil profile multi-objective optimization design method considering three-dimensional influence, and belongs to the field of aerodynamic configuration design of aircrafts. In order to solve the problem that the subsonic speed state resistance of a multi-objective optimization result of an airfoil of a large-sweepback small-aspect-ratio thin wing becomes poor in a three-dimensional use environment, the height of the upper surface near the front edge of the airfoil is restrained on the basis of a general optimization design method; the chordwise position range of the height constraint of the upper surface near the front edge of the airfoil is set to be 4%-10% of the chord length, 1-2 chordwise positions are selected for height constraint, and the constraint condition is that the height of the upper surface of the front edge of the optimized airfoil is not lower than the height of the upper surface of the front edge of the original airfoil. The method can effectively inhibit the separation of the leading edge of the wing in a use state in a three-dimensional environment. Therefore, the resistance performance in a subsonic speed state is ensured under the conditions of realizing supersonic speed resistance reduction of the wing and improving the resistance divergence Mach number, and the method is used for aerodynamic design of wings of supersonic speed transport aircrafts, fighters and unmanned aerial vehicles.

    一种考虑三维影响的宽速域薄翼型多目标优化设计方法,属于飞行器气动外形设计领域。本发明针对大后掠小展弦比薄机翼的翼型多目标优化结果在三维使用环境下亚声速状态阻力变差的问题,提出在通用的优化设计方法基础之上,对翼型前缘附近上表面高度进行约束,设置翼型前缘附近上表面的高度约束的弦向位置范围为弦长的4%~10%,选择1~2个弦向位置进行高度约束,约束条件为优化后翼型的前缘上表面的高度不低于原始翼型的前缘上表面的高度。本发明能够有效的抑制三维环境下使用状态的机翼前缘分离。进而在实现机翼超声速减阻、提高阻力发散马赫数的情况下,亚声速状态的阻力性能也得以保证,用于超声速运输机、战斗机、无人机的机翼气动设计。


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    Titel :

    Wide-speed-domain thin airfoil profile multi-objective optimization design method considering three-dimensional influence


    Weitere Titelangaben:

    一种考虑三维影响的宽速域薄翼型多目标优化设计方法


    Beteiligte:
    ZHANG TIEJUN (Autor:in) / YANG LONG (Autor:in) / XIN HUAN (Autor:in)

    Erscheinungsdatum :

    2023-01-17


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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