姜涛, 陈尚成, 冯文正等. 无人机入水发射流场仿真及冲击特性分析. 力学与实践, 2023, 45(4): 874-880. DOI: 10.6052/1000-0879-22-709
引用本文: 姜涛, 陈尚成, 冯文正等. 无人机入水发射流场仿真及冲击特性分析. 力学与实践, 2023, 45(4): 874-880. DOI: 10.6052/1000-0879-22-709
Jiang Tao, Chen Shangcheng, Feng Wenzheng, et al. Flow field simulation and impact characteristic analysis of unmanned aerial vehicle water entry. Mechanics in Engineering, 2023, 45(4): 874-880. DOI: 10.6052/1000-0879-22-709
Citation: Jiang Tao, Chen Shangcheng, Feng Wenzheng, et al. Flow field simulation and impact characteristic analysis of unmanned aerial vehicle water entry. Mechanics in Engineering, 2023, 45(4): 874-880. DOI: 10.6052/1000-0879-22-709

无人机入水发射流场仿真及冲击特性分析

FLOW FIELD SIMULATION AND IMPACT CHARACTERISTIC ANALYSIS OF UNMANNED AERIAL VEHICLE WATER ENTRY

  • 摘要: 跨介质航行是近年来无人机应用领域的重要研究内容。本文通过数值模拟方法,对某型号飞翼式无人机在不同工况下发射入水过程流场演变及运动姿态进行对比分析,同时对其入水冲击响应进行了数值仿真研究,得到不同发射工况下无人机的入水冲击载荷响应情况。结果表明:该型号无人机入水过程的姿态变化同时受水面条件及发射工况影响,静水工况下以25°入水角、4 m/s的条件发射无人机入水时,可实现最优的姿态恢复时间及入水冲击载荷响应值。

     

    Abstract: Unmanned aerial vehicle (UAV) trans-medium navigation is an important research field in recent years. In this paper, through numerical simulations, the flow field evolution and motion attitude of a flying wing UAV in the process of launching into water under different working conditions were compared and analyzed. At the same time, the numerical simulation of its water impact response was carried out to obtain the response of the UAV under water impact load for different launching conditions. The results show that the posture change of the UAV during water entry process is affected by both surface conditions and launch conditions. In hydrostatic condition, when the UAV is launched at 25° water entry angle and with speed of 4 m/s, the optimal attitude recovery time and response value of water entry impact load can be achieved.

     

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