基于Plib的飞艇飞行视景仿真设计

Design of Airship Flight Scene Simulation Based on Plib

由于飞艇体积大、密度小,受附加惯性力显著,其动力学特性与常规飞行器有较大不同。所以,为了直观全面地了解飞艇的飞行特点,对飞艇进行飞行视景仿真是必要的。为此首先介绍了视景仿真开发工具Plib和仿真系统总体框架,然后,应用机理分析方法建立了飞艇运动模型。在此基础上,调用Plib的类方法创建三维仿真环境,重点研究了天空海洋绘制、模型导入、视点变换、图形用户界面资源及键盘鼠标响应控制等关键技术。最后应用该系统对飞艇纵侧向扰动运动进行了仿真,展现了飞艇受扰后的飞行状态和各种运动模态的变化过程,结果表明该仿真系统真实感强,实时性好,可以为飞艇的后续研制工作提供参考和帮助。

In order to verify the airship flight characteristic, it is necessary that research the airship scene simulation. First, the development tool of scene simulation, Plib, was introduced. Then, the block diagram of simulation system was built. In the paper, several key technologies were studied, which included the sky-ocean drawing, model importing, view port transferring, user interface programmers and keyboard- mouse response controlling. Finally, the longitudinal and lateral disturbed motion of the airship were tested and analyzed based on the system. The simulation results indicate that the system has some good performance and can help to the airship subsequent development work.