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首页> 外文期刊>International Journal of Aerodynamics >A component build-up approach for aerodynamic prediction of a winged ducted-propeller micro air vehicle
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A component build-up approach for aerodynamic prediction of a winged ducted-propeller micro air vehicle

机译：翼型螺旋桨微型飞行器空气动力学预测的组件建立方法

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摘要

Characterised by low aspect ratio lifting/control surfaces and flight in the low Reynolds number regime, a typical micro air vehicle (MAV) generates complex flow phenomena that cannot be accurately predicted using conventional-aircraft design tools. This flow complexity motivates the use of advanced computational fluid dynamics (CFD) tools even in the conceptual design stage. However, the use of full CFD simulations during the conceptual design stage is not realistic due to time and computational cost constraints. This paper proposes an innovative solution based on the component build-up method (CBM), which is consistently used in conventional-aircraft design to predict the full vehicle aerodynamic performances. In order to take into account, the complex phenomena of aerodynamic interferences and mutual flow perturbations generated by the lifting surfaces while still maintaining a low computational cost, an improved CBM approach was proposed to allow quick prediction of aerodynamic coefficients of a winged ducted-propeller MAV at various configurations. Comparisons of results between this efficient method and CFD are also presented to validate the approach.
机译：典型的微型飞行器（MAV）具有低长宽比的提升/控制面和在低雷诺数范围内的飞行特性，其产生的复杂流动现象无法使用常规飞机设计工具准确预测。即使在概念设计阶段，这种流程复杂性也促使使用高级计算流体动力学（CFD）工具。但是，由于时间和计算成本的限制，在概念设计阶段使用完整的CFD模拟是不现实的。本文提出了一种基于组件建立方法（CBM）的创新解决方案，该方法始终用于常规飞机设计中以预测整车的空气动力学性能。为了考虑到由升力面产生的空气动力干扰和相互扰动的复杂现象，同时仍保持较低的计算成本，提出了一种改进的CBM方法以允许快速预测翼型螺旋桨MAV的空气动力系数在各种配置下。还对这种有效方法与CFD的结果进行了比较，以验证该方法。

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