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尾坐式超小型无人定翼机结构简单、飞行效率高、实用性强,其特有的飞行模式与传统飞行器显著不同,分析并掌握其运动特性具有重要意义。提出了一种尾坐式无人定翼机的新方案。为获得其基本气动参数,利用FLUENT进行CFD仿真建立其空气动力学数据库。为分析其各种运动模式,采用四元素法描述其运动姿态,并建立其六自由度飞行运动模型。最后,基于SIMULINK/Aerospace建立运动仿真平台,仿真结果表明该方案垂直起降过程的可行性,为后续控制系统设计与导航奠定了基础。
The tail-mounted UAV is simple in structure, high in flight efficiency and practical, and its unique flight mode is significantly different from the traditional aircraft. It is of great significance to analyze and grasp its movement characteristics. A new scheme of tailless unmanned airfoil is proposed. To obtain its basic aerodynamic parameters, a CFD simulation using FLUENT was used to establish its aerodynamic database. In order to analyze various sports patterns, a four-element method is used to describe the movement attitude and the six-degree-of-freedom flight movement model is established. Finally, based on SIMULINK / Aerospace, a motion simulation platform is established. The simulation results show that the proposed scheme is feasible and can lay a foundation for the design and navigation of subsequent control systems.