翼
机翼扭转
拍打
空气动力学
微型飞行器
Lift(数据挖掘)
机翼载荷
升力系数
航空航天工程
冲刷
旋涡升力
灵活性(工程)
机翼外形
结构工程
有限元法
工程类
攻角
计算机科学
机械
物理
数学
湍流
统计
雷诺数
气象学
数据挖掘
作者
David Colmenares,Randall Kania,Wang Zhang,Metin Sitti
出处
期刊:Cornell University - arXiv
日期:2020-01-01
标识
DOI:10.48550/arxiv.2001.11586
摘要
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.
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