The airfoil shape is then adjusted until the desired velocity distribution is obtained.

然后是调整翼型的形状，直到取得预期的速度分布。

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Direct methods are based on the design-by-analysis approach in which the airfoil shape is specified first.

直接的方法是基于设计逐案分析的方法是机翼形状指定第一。

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The variable-domain variation is a specific tool of handling unknown boundaries and suitable for designing airfoil shape.

变域变分是一种处理未知界面的独特工具，极适合于气动外形的设计求解。

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Thanks to money from the Defense Advanced Research Project Administration (DARPA), Chiang began developing this surface morphing technique to improve the aerodynamics of helicopter blades by altering the airfoil shape.

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