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Definition of Wingtip Devices Shape and Dimensions for a Subsonic Airliner

机译:Wingtip器件的定义为亚音速器件的形状和尺寸

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The results of flow field numerical simulation on the typical wing-body prototype of the modern DLR-F4 airliner under sub- and transonic compressible air flow are presented. Using the DLR-F4 CAD model, the effect of the wingtip end plate area and of the cant angle of a typical Whitcomb winglet is studied. The dependencies of the model lift-to-drag ratio increment on the flat wingtip end plate relative area and on the cant angle of an airfoil Whitcomb winglet are obtained. The concept of an elliptic winglet with a variable cant angle that similar to the winglet used on Airbus A350 is studied. A technique is developed for solving the multi-parameter design optimization task for the Whitcomb winglet, taking the maximum lift-to-drag ratio of the wing as a criterion for optimization.
机译:介绍了在跨音可压缩空气流下现代DLR-F4班车典型翼形原型的流场数值模拟的结果。 研究了DLR-F4 CAD模型,研究了WingTip端板面积和典型的Whitcomb幼锭的不能角度的效果。 获得了扁平翼端板相对区域和翼型翼片翼飞翼的扁平端板相对区域和不能角度的模型升力与拖曳比率的依赖性。 研究了椭圆翼的概念,其具有类似于空中客车A350上使用的小翼的变角。 开发了一种用于解决Whitcomb Winglet的多参数设计优化任务的技术,将机翼的最大升力比作为优化的标准。

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