无人机发射过程风载荷影响分析

Analysis of Wind Load Effects on Launching Process of a UAV

基于ADAMS/MATLAB建立了无人机发射过程联合仿真模型,采用“风剖面”与“瞬态中国帽”法建立了动态风场模型,仿真分析了风速、风向、平均风、瞬态风等因素对无人机发射安全性的影响。仿真结果表明:无人机发射过程中,动态风影响明显大于平均风,动态风效应不可忽略;三级风对该型无人机的发射安全性影响不大;五级风作用下,该型无人机的发射俯仰姿态、滚转姿态和偏航姿态变化明显加剧,发射安全性明显降低。

The launching model was established based on the co-simulation of ADAMS and MATLAB.The dynamic wind model was built based on wind profile and transient china hat.The wind speed,wind direction,mean wind and transient wind were selected as influence factors.The results show that:the wind load effect is obvious and the transient wind has more great impacts.In gentle breeze profile,the UAV can be launched successfully,but in the fresh breeze profile,the UAV’s launching attitude is obvious instability.