论文标题
由生物启发的柔性扭曲翅膀提高了拍打机翼的升力和效率
Bio-inspired Flexible Twisting Wings Increase Lift and Efficiency of a Flapping Wing Micro Air Vehicle
论文作者
论文摘要
我们研究了机翼扭转柔韧性对能够升空的拍打翼微型空气车的升力和效率的影响。由于建模和制造限制，以前使用的机翼被选择为完全刚性。但是，生物翅膀具有高度柔韧性，其他微型空气车已成功地利用了灵活的机翼结构来进行专门任务。我们研究的目的是确定柔性机翼的动态扭曲是否可以提高整体空气动力学提升和效率。发现灵活的扭曲设计可将空气动力学效率提高41.3％，转化升力产生35.3％，而有效的升力系数则增加了63.7％。这些结果超出了准稳态叶片元件模型的预测，表明需要对扭曲拍打机翼的不稳定计算流体动力学模拟。
We investigate the effect of wing twist flexibility on lift and efficiency of a flapping-wing micro air vehicle capable of liftoff. Wings used previously were chosen to be fully rigid due to modeling and fabrication constraints. However, biological wings are highly flexible and other micro air vehicles have successfully utilized flexible wing structures for specialized tasks. The goal of our study is to determine if dynamic twisting of flexible wings can increase overall aerodynamic lift and efficiency. A flexible twisting wing design was found to increase aerodynamic efficiency by 41.3%, translational lift production by 35.3%, and the effective lift coefficient by 63.7% compared to the rigid-wing design. These results exceed the predictions of quasi-steady blade element models, indicating the need for unsteady computational fluid dynamics simulations of twisted flapping wings.
