CAREER: Investigation of Dynamic Interactions Between Wing-Body and Aerodynamics in Bio-Inspired Flight

职业：研究仿生飞行中翼身与空气动力学之间的动态相互作用

基本信息

批准号：
1846308
负责人：
Haithem Taha
金额：
$ 50万
依托单位：
University of California-Irvine
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-03-15 至 2024-02-29
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1846308&HistoricalAwards=false
关键词：
CAREER Investigation Dynamic Interactions Between

项目摘要

Biological flyers such as insects and birds represent an engineering marvel in terms of their natural maneuvering capabilities. These exhibited biological phenomena offer a scientifically-rich gold mine for problems. The astounding maneuvering performance exhibited by these flyers is a result of complex dynamic interaction that takes place between their flapping wings and the aerodynamics resulting from fluid flow over their bodies. Some insects have been observed to perform turning maneuvers of greater than 3000 deg/s, with less than a 30 ms delay. In normal everyday flight, some birds may experience up to 14 g accelerations in super-maneuverable tasks, while the maneuverability of the most advanced fighter airplanes cannot exceed 8-9 g. This Faculty Early Career Development Program (CAREER) project will focus on understanding the fundamental aspects and mechanisms of the dynamic interaction between the wing-body and fluid dynamics during flight. The results from the proposed research will enable engineers to design bio-inspired micro-air-vehicles without complicated sensory-control-actuator-processing systems by promoting self (natural) stabilization. The proposed research will boost the design capabilities of micro-air-vehicles and drones, which have great potential use in search and rescue missions, reconnaissance missions, filming, border monitoring, emergency response, etc. It is a multi-disciplinary work that bridges the gap between mathematics, physics, engineering, and biomechanics. The project will also lead to the development of new courses for students and interesting program that focuses on improving participation of minority students in STEM disciplines. The primary objective of this proposal is to investigate the interactions between the wing-body dynamics and unsteady flow dynamics in flapping flight with particular emphasis on the underpinning physics of the newly discovered vibrational stabilization phenomenon. This will be achieved by a three-prong approach: (i) Theoretical: by developing a reduced-order flight dynamic model and analyzing the aerodynamics-body-wing-dynamics interactions using geometric control theory and higher-order averaging; (ii) Computational: by solving Navier-Stokes equations around the wings of a flapping insect, coupled with the mechanical equations governing the wing and body motion to study the role of leading and trailing edge vortices in the vibrational stabilization phenomenon; and (iii) Experimental: by building a multi degree-of-freedom test bed (with motion capture and flow visualization) to validate the theoretical and computational findings and experimentally assess the effectiveness of vibrational stabilization in flapping flight and scrutinize its physics. Finally, a new generation of flapping micro-air-vehicles will be developed with minimal actuation, relying on the discovered vibrational stabilization phenomenon.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

昆虫和鸟类等生物飞行器的自然机动能力堪称工程奇迹。这些展示的生物现象为解决问题提供了丰富的科学金矿。这些飞行器所表现出的令人惊叹的机动性能是其扑动的机翼与流过其身体的流体所产生的空气动力学之间发生的复杂动态相互作用的结果。据观察，一些昆虫的转动速度超过 3000 度/秒，延迟小于 30 毫秒。在正常的日常飞行中，一些鸟类在超机动任务中可能会经历高达14克的加速度，而最先进战斗机的机动能力不能超过8-9克。该教师早期职业发展计划（CAREER）项目将侧重于了解飞行过程中翼身与流体动力学之间动态相互作用的基本方面和机制。拟议研究的结果将使工程师能够通过促进自（自然）稳定来设计仿生微型飞行器，而无需复杂的传感控制执行器处理系统。拟议的研究将提高微型飞行器和无人机的设计能力，在搜救任务、侦察任务、拍摄、边境监控、应急响应等方面具有巨大的潜在用途。这是一项跨学科的工作，在数学、物理、工程和生物力学之间的差距。该项目还将为学生开发新课程和有趣的项目，重点是提高少数族裔学生对 STEM 学科的参与。该提案的主要目标是研究扑翼飞行中翼体动力学和非定常流动动力学之间的相互作用，特别强调新发现的振动稳定现象的基础物理。这将通过三管齐下的方法来实现： (i) 理论：通过开发降阶飞行动力学模型并使用几何控制理论和高阶平均分析空气动力学-机身-机翼-动力学相互作用； (ii) 计算：通过求解扑动昆虫翅膀周围的纳维-斯托克斯方程，结合控制翅膀和身体运动的力学方程，研究前缘和后缘涡流在振动稳定现象中的作用； (iii) 实验：通过构建多自由度测试台（具有运动捕捉和流动可视化）来验证理论和计算结果，并通过实验评估扑翼飞行中振动稳定的有效性并仔细检查其物理原理。最后，将依靠所发现的振动稳定现象，以最小的驱动开发新一代扑动微型飞行器。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响进行评估，被认为值得支持审查标准。