自主水下航行器固定舵对尾舵水动力的影响

自主水下航行器(AUV)为保证尾舵受到撞击等不可控因素而不损坏,通常在全动舵前面安装起保护作用的固定舵。利用三维计算流体力学(CFD)软件对自主水下航行器的全动舵以及安装在全动舵之前起保护作用的固定舵,进行水动力特性分析。分析了固定舵安装之前和安装之后的升阻比,铰链力矩等水动力参数;通过改变固定舵与全动舵之间的缝隙大小,分析各个变量对整体水动力参数的影响,找到了固定舵的最佳安装位置,得出固定舵片对铰链力矩的影响。研究结果为自主水下航行器尾舵部位的保护舵设计提供了理论依据和参考。

Influence of fixed rudder of autonomous underwater vehicle on hydrodynamics of rudder

In order to ensure that the autonomous underwater vehicle(AUV)tail rudder is not damaged when it is impacted.A protective rudder is usually installed in front of the all-movable rudder.The three-dimensional computational fluid dynamics(CFD)software is used to analyze the hydrodynamic characteristics,which include two aspects:the all-movable rudder of the autonomous underwater vehicle and the fixed rudder that is protected before the all-movable rudder.The hydrodynamic parameters such as lift-drag ratio and hinge moment are analyzed for the model before the fixed rudder installation and the model after installation.Through changing the gap between the fixed rudder and the all-movable rudder,the influence of each variable on the overall hydrodynamic parameters is analyzed,the optimal installation position of the fixed rudder is found,and the influence of the fixed rudder on the hinge moment is obtained.The results provide theoretical guidance and reference for the design of the protection rudder of autonomous underwater vehicle.