重型装备空投视景仿真系统的设计与实现

针对军用运输机空投任务，基于重装空投过程的动力学分析，运用分离法将飞机与重装作为两个独立的实体、降落伞与重装视为一个整体，构建了在无控条件下机－物与伞－物两部分的动力学模型，结合视景仿真技术，使用 Unity 3D为开发引擎研制了一套包含飞机飞行动力学模型、重装出舱动力学模型、降落伞空投动力学模型及其关键数据实时显示、记录与打印的可视化虚拟环境，以计算数据驱动三维模型完成整个空投过程的关键动作，弥补了数值仿真系统不直观的缺点，增加了视景仿真系统的近真实性。结果表明：该视景仿真系统可以近似真实地还原空投过程、准确完成空投动作，为重型装备空投的分析与评估提供了参考。

The Design and Implementation of Visual Simulation System of Heavy Equipment Airdrop Computer Engineering and Applications

Based on military transport planes airdrop task,the analysis of dynamics on heavy equip-ment airdrop process,with the plane and the heavy load regarded as two separate entities,while the parachute and the heavy load as a whole by using separation method,this thesis constructed a dynamic model of the two parts of the plane and the material,the material and the umbrella under non-control condition. Combined with visual simulation technology,with Unity 3D as the development engine,a set of dynamic models of aircraft flight dynamics,extravehicular movement dynamics,parachute air-drop dynamics are developed with the visual virtual environment of key data real-time displayed,recor-ded and printed. Then the calculated data to drive the 3D model and the key action of the airdrop process makes up for the weakness in numerical simulation system and increases the near authenticity of the visual simulation system. The results show that the apparent scene simulation system of the drop action and movement trajectory is basically consistent with real situations with the drop action results being accurate,providing a reference for the analysis and evaluation of heavy equipment airdrop.