摘要
设计了一种四旋翼尾坐式垂直起降无人机,并针对强风扰环境,对该无人机的气动特性进行了研究。通过计算流体动力学(Computational Fluid Dynamics,CFD)方法求解了定常不可压N-S方程和k-ωSST湍流模型,仿真分析了所设计的尾坐式无人机在正向、侧向、垂向三种来流角度情况下的气动特性,获得了该无人机大角度范围的气动系数变化曲线,为该无人机气动性能的优化及控制系统的设计提供了依据。仿真结果表明,所设计的尾坐式无人机具有良好的平飞气动效率;在垂直状态下以机腹正对来流方向,有利于抗风扰控制。
The aerodynamic characteristics of tail-sitter Vertical Take-Off and Landing(VTOL)Unmanned Aerial Vehicle(UAV)under strong wind disturbance are studied.A quad-rotor tail-sitter VTOL UAV is designed.Based on the CFD method,the aerodynamic characteristics of the tail-sitter UAV are simulated and analysed by solving incompressible steady N-S equations and SST turbulence model in the cases of forward,lateral and vertical flow.The aerodynamic coefficient variation curves of the tail-sitter UAV in large angle ranges are obtained,which provide the basis for the aerodynamic performance optimization of the aircraft and the design of the control system.The results show that the tail-sitter UAV has good aerodynamic characteristics in level flight;in the vertical state,when the belly of the UAV is aligned with the direction of the incoming flow,it is conducive to the wind resistance control.
作者
邸彦佳
陈自力
苏立军
DI Yan-jia;CHEN Zi-li;SU Li-jun(Shijiazhuang Campus of Army Engineering University, Shijiazhuang 050003, China)
出处
《指挥控制与仿真》
2021年第5期107-114,共8页
Command Control & Simulation
关键词
尾坐式无人机
垂直起降
计算流体力学
气动特性
总体设计
抗风
tail-sitter UAV
VTOL
computational fluid dynamics
aerodynamic characteristics
overall design
wind resistance
