摘要
为了提高扑翼飞行器的飞行性能,借鉴大型鸟类的飞行运动特征,设计了一种以凸轮摇杆为扑动机构的新型扑翼飞行器,建立了扑动机构的运动学和气动力学模型。结果表明:通过大型鸟类翅翼扑动规律对凸轮机构进行优化设计,得到了扑翼下扑占据整个扑动行程的60%左右;而提出的凸轮摇杆扑动机构的运动学模型,能够求解扑翼飞行器的相关运动参数。基于条带理论和扑翼飞行器的气动力模型,分别对凸轮摇杆扑翼飞行器、传统的双曲柄双摇杆机构扑翼飞行器的气动力进行计算比较,前者的平均升力为后者的1.382倍,前者平均推力为后者1.224倍,凸轮摇杆扑翼飞行结构具有更好的气动特性。
In order to improve the flight performance of the flapping-wing aircraft,a new type of flapping-wing structure with a cam rocker as the flutter mechanism was designed based on the principle of flight movements of large birds.The corresponding kinematics and aerodynamic models were established.These results indicated that the cam mechanism was optimized by using the flapping mechanism of large bird wings.And the flapping stroke of the flapping wing as the cam mechanism could account about 60% for the entire flapping stroke.In addition,a kinematic model of the cam rocker flutter mechanism was also proposed,and related motion parameters were obtained.The aerodynamic parameters of the cam-rocker flapping-wing structure and the traditional double-crank and double-rocker flapping-wing aircraft were respectively calculated and compared by using the strip theory and aerodynamic model.The compared results show that the average lift of the former using the cam rocker flapping mechanism is 1.382 times that of the latter,and the thrust of the former is about 1.224 times that the latter.Therefore,the new drive structure helps to improve the aerodynamic properties of bionic flapping-wing aircraft.
作者
张瑞坤
何畏
王习术
郑家伟
孙磊
ZHANG Ruikun;HE Wei;WANG Xishu;ZHENG Jiawei;SUN Lei(Southwest Petroleum University,School of Mechanical and Electrical Engineering,610500 Chengdu,China;School of Aerospace Engineering,Tsinghua University,100083 Beijing,China;BOMCO Chengdu Equipment Manufacturing Company,610052 Chengdu,China)
出处
《应用力学学报》
CAS
CSCD
北大核心
2022年第1期72-78,共7页
Chinese Journal of Applied Mechanics
基金
四川省科技支撑计划项目(No.2014GZ0153)。
关键词
扑翼机构
凸轮摇杆
运动学分析
气动力
flapping-wing mechanism
cam rocker
kinematic analysis
aerodynamics
