Effect of Wing Deformation and Flexibility on the Aerodynamics of Insect Flight

翅膀变形和灵活性对昆虫飞行空气动力学的影响

• 批准号: 0943425
• 负责人: Rajat Mittal
• 金额: $ 20.79万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0943425&HistoricalAwards=false
• 关键词: Effect; Wing; Deformation; Flexibility; Aerodynamics

0828147 MittalFlapping flight with flexible wings that twist, bend and morph is a hallmark of aerial locomotion in animals, but achieving biological levels of aerial performance in micro-aerial vehicles (MAVs) with human-designed wings has proven elusive. The PIs will study the role of wing deformation and flexibility on the aerodynamics and flight characteristics of insects using butterflies as the insect models to study the impact of wing deformation and flexibility on insect flight aerodynamics. Butterflies are large insects with highly deformable wings that show a variety of flight behaviors and as such, are good models for this study. The proposed research has three main components. The first is Insect flight studies using high-speed, high resolution digital videogrammetry techniques to extract the detailed wing and body kinematics, motions and accelerations of butterflies in free flight. The second is parameterization of butterfly wing structure and development of validated wing finite-element models coupled to a computational fluid dynamics solver. Finally, computational modeling and analysis of butterfly flight including analysis of level and climbing flight, flight maneuvers as well as active and passive deformation of the wings are planned. This study will significantly advance our understanding of subtle aerodynamic effects related to wing deformation and flexibility in insects that are not addressed to date. The PIs also expect to advance computational modeling of these complex flows using high fidelity computational modeling in tight coordination with biological investigations to extract fundamental insight into flapping flight. A significant portion of the research relating to insect flight studies and structural parameterization will be carried out by undergraduate students. These students will have a chance to work in a multidisciplinary team addressing issues in biology, fluid mechanics, structural dynamics, experimental testing and computational modeling. The topic of insect flight is one that easily catches the interest of students of all levels, and the PIs will leverage this to conduct annual outreach activities with area magnet high schools and schools in the District of Columbia.

0828147 Mittalflagping飞行，具有柔性翅膀的飞行，扭曲，弯曲和变形是动物空中运动的标志，但是在微型冲洗车辆（MAVS）中实现了具有人类设计的翅膀的微型冲洗车（MAVS）的生物学水平，这证明是难以捉摸的。 PI将研究使用蝴蝶作为昆虫模型的昆虫的空气动力学和飞行特征的机翼变形和灵活性的作用，以研究机翼变形和柔韧性对昆虫飞行空气动力学的影响。蝴蝶是具有高度可变形的翅膀的大型昆虫，显示出各种飞行行为，因此是这项研究的好模型。拟议的研究具有三个主要组成部分。首先是使用高速，高分辨率的数字视频图技术进行昆虫飞行研究，以提取自由飞行中蝴蝶的详细机翼和身体运动学，运动和加速度。第二个是蝴蝶翼结构的参数化和经过验证的机翼有限元模型的开发，该模型与计算流体动力学求解器相连。最后，计划对蝴蝶飞行进行计算建模和分析，包括分析水平和攀爬飞行，飞行操作以及机翼的主动和被动变形。这项研究将大大提高我们对迄今为止尚未解决的昆虫的机翼变形和柔韧性有关的微妙空气动力学效应的理解。 PI还期望在与生物学调查的紧密协调中使用高保真计算建模来推动这些复杂流的计算建模，以提取对拍打飞行的基本洞察力。 与昆虫飞行研究和结构参数化有关的研究中很大一部分将由本科生进行。这些学生将有机会在一个多学科团队中工作，以解决生物学，流体力学，结构动力学，实验测试和计算建模方面的问题。昆虫飞行的话题很容易引起各级学生的兴趣，PIS将利用这一点在哥伦比亚特区的地区磁铁高中和学校进行年度外展活动。