一种微下击暴流的实时仿真及可视化方法

A Real-Time Simulation and Visualization of the Microburst

微下击暴流是严重影响航空器飞行安全的特殊气象条件之一,对起飞和降落阶段的飞行造成很大威胁。本文提出一种微下击暴流风场的快速仿真算法和可视化技术,可为飞行模拟软件提供遭遇微下击暴流时的飞行状况及视觉仿真功能,有效提高飞行员对微下击暴流气象条件的感性认知和应对能力。该方法基于圆切线模型对微下击暴流风场进行快速仿真计算,并采用粒子系统叠加拖尾多边形而达到风场可视化效果。实际测试表明,该方法简便易行,可在主流游戏引擎上实现微下击暴流的实时仿真和渲染功能。

The microburst is a special meteorological condition that affects the flight heavily. It threats to the aircraft seriously during takeoff and landing. A real-time visually simulation method of the micro-burst was presented to generate vivid 3D wind field for the flight simulation software or game. It may be used to improve pilots’ ability to deal with unexpected microburst situation. The presented method used a circle’s tangent model as a simplified mathematical approximation of the microburst. The simulated wind field was visualized by the common particle system overlapped a polygon trailing component. Experimental simulation scenes on the Unity engine show that the proposed method is easy to program and achieves real-time frame rate on a common PC.