Measurements of the Aerodynamic Characteristics of Low Aspect Ratio Wings in Complex Motions
Measurements of the Aerodynamic Characteristics of Low Aspect Ratio Wings in Complex Motions
复制标题
复杂运动中小展弦比机翼气动特性的测量
DOI：
10.2514/6.2011-3577
复制
发表时间：
2011
期刊：
影响因子：
5.4
通讯作者：
R. Radespiel
中科院分区：
文献类型：
--
作者：
Ralf Wokoeck;R. Radespiel
本文描述了微型飞行器大小的机翼在栖息运动中的空气动力测量。栖息运动是根据鸟类的翅膀运动建模的，以便在降落在一个小点（即栖息处）时迅速降低速度。该运动被定义为机翼从低起始迎角到高最终迎角的不连续俯仰。研究是用两个矩形平板机翼进行从0°到45°迎角的悬停运动。力的测量与内部平衡采取了各种组合的雷诺数和减少的频率。在一个特定组合的不同时间阶段进行了流场的2D粒子图像测速，其中力测量表明流场发生变化，以更深入地了解这种运动类型的复杂非定常气动响应。
This paper describes aerodynamic measurements of micro aerial vehicle sized wings in perching motion. The perching motion is modelled according to the wing motions of birds to rapidly reduce velocity when landing on a small spot i.e. a perch. The motion is defined as a discontinuous pitching of a wing from low starting angles of attack to high final angles. The study was carried out with two rectangular flat plate wings performing the perching motion from 0° to 45° angle of attack. Force measurements with an internal balance were taken for various combinations of Reynolds numbers and reduced frequencies. 2D particle image velocimetry of the flow field was carried out for different time phases of one particular combination, where the force measurements indicate changes in the flow field to occur, to give more insight to the complex unsteady aerodynamic response to this motion type.