仿生变形飞行器多体动力学建模与仿真  

Dynamic Modeling and Simulation of Morphing Aerocraft

作　　者：高峰[1] 蒋国江 丰志伟[1] 张青斌[1] GAO Feng;JIANG Guojiang;FENG Zhiwei;ZHANG Qingbin(College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China;Armed Police Second Mobile Corps Helicopter Detachment,Changsha 410073,China)

机构地区：[1]国防科技大学空天科学学院,湖南长沙410073 [2]武警第二机动总队直升机支队,湖南长沙410073

出　　处：《系统仿真技术》2020年第1期32-36,45,共6页System Simulation Technology

基　　金：国家自然科学基金(11772353);航空科学基金(20161988003)。

摘　　要：采用多刚体形式的多体动力模型研究了仿生飞行器的动力学特性。依据鸟类的飞行特性,建立了包含翅根和鸟翼的五刚体简化多体模型,得到了变形运动规律;在定常假设下采用了涡格法估算分析了扑翼-滑翔周期内的气动特性;建立了鸟类飞行拟坐标形式的拉格朗日多刚体动力学模型。仿真结果表明了所建多体动力学模型的有效性,建模方法亦可应用到其他类似变形飞行器。In this paper,the dynamic characteristics of bionic aircraft are studied by multi-body dynamic model. According to the flapping-wing flight of birds,a multiple-joint wing that represented the shoulder and elbow of a bird is adopted along with designed flapping movement,and obtaining the rule of deformation motion. Therefore,the associated aerodynamics for flapping and cruise is achieved using vortex lattice method. The Lagrange multi-rigid body dynamics model of bird flight in the form of quasi-coordinate is established. The resulting flight dynamics demonstrate the biomimetic mission effectiveness for this class of vehicles. The simulation results show that the multi-body dynamics model is effective and can be applied to other morphing aircraft.

关 键 词：变形飞行器 多体系统动力学 涡格法 

分 类 号：V214.5[航空宇航科学与技术—航空宇航推进理论与工程]