【作者】 杨斐；

【导师】 罗东明；

【作者基本信息】 南京航空航天大学 ， 飞行器设计， 2009， 硕士

【摘要】 本文主要介绍了如何建立模拟无人机飞行的飞行仿真系统,详细分析了实时飞行仿真系统的建模需求、建模方法及仿真模型的构建。文中以某无人机为原型,完成了飞行动力学仿真模型的建立和无人机飞行仿真系统软件的开发工作,并且利用仿真结果对无人机模型的飞行特性进行了分析评估。主要研究内容如下:1.讨论了设计开发飞行仿真系统面向对象的建模方法,构建了本系统的模块结构,为本文的建模工作提供了总体框架,并分析了模块的划分情况和各模块的功能。2.飞行仿真系统的详细建模过程。该系统主要由空气动力模型、飞行动力学方程模型、飞行控制模型、动力系统模型和大气环境模型等构成。3.仿真系统的实现。运用DirectX、面向对象编程等技术,实现了基于PC机的三维虚拟飞行仿真系统。该仿真系统通过人机交互飞行,可以直观地显示无人机的飞行姿态与轨迹,同时也可记录分析仿真飞行数据。4.基于飞行仿真系统得到的结果数据,对无人机模型的稳定性与操纵性能及弹射起飞过程中的飞行特性变化进行了分析评估。更多还原

【Abstract】 The article mainly introduces how to build the flight simulation system which can reflect the flight of unmanned aerial vehicle, and analyses requirements and methods of the medeling and the structure of medels in detail. The flight simulation accomplishes the modeling specifically which is based on some unmanned aerial vehicle model and developing the flight simulation system for unmanned aerial vehicle. The flight performance of unmanned aerial vehicle is analysed and evaluated based on the data which is recorded by flight simulation system.The main research contents are as follows:1. Object-oriented design methodology for flight simulation system is discusses, and structure of all models is builded for providing the process frame of the modeling entirely. The partition and function of models is also analysed.2. Modeling for flight simulation system. It mainly contains aerodynamic model, Flight dynamic model, power system model, atmosphere environment model, and so on3. Realisation of Flight simulation system. Technologies such as DirectX and object-oriented programming are used to realize visual three-dimensional flight simulation system based on personal computer. The system can display the change of position and track for unmanned aerial vehicle directly by means of human-computer interaction. Flight simulation data can be also recorded.4. Based on the data which is recorded by flight simulation system, we can analysis and evaluate the operation and stable performance of unmanned aerial vehicle and the change of flight performance in the process of ejection take-off.更多还原