We devise an undergraduate experiment to evaluate the wind turbine power coefficient. The apparatus features a commercial miniature rotor hub that allows both blade replacement and adjustment of the pitch angle. The blades are 3D printed. Three pedagogical objectives are emphasized: (1) the demonstration of a practical application of rotational mechanics, (2) the illustration of wind harvesting by parameter optimization, and (3) the appreciation of where the unharvested wind energy goes. Analysis of the student performance shows that the three objectives are partially achieved.

中文翻译：

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评估风机功率系数—一项本科生实验

我们设计了一个本科生实验来评估风力发电机的功率系数。该设备具有一个商用微型转子轮毂，该轮毂既可以更换叶片，也可以调节桨距角。刀片是3D打印的。强调了三个教学目标：（1）旋转力学的实际应用演示；（2）通过参数优化举例说明风能收集；（3）评估未收获的风能的去向。对学生表现的分析表明，这三个目标是部分实现的。