摘要
利用Radau伪谱法将连续的助推-滑翔飞行器轨迹优化问题转化为非线性规划问题,通过仿真得到了飞行器完整的可达区域,着重分析了升阻比、终端速度以及终端倾角对飞行器可达区域的影响。研究结果表明,可达区域呈现出类椭圆结构,其地理区域覆盖能力由助推火箭关机点速度决定;与终端倾角对飞行器可达区域的影响相比,飞行器升阻比特性和终端速度的影响相对较大。
The boost-glide vehicle＇s trajectory optimization planning problem is converted into nonlinear planning problem by using Radau pseudospectral method. An integral footprint is obtained by software simulating. The effects of the lift to drag ratio, terminal velocity and terminal flight path angle on the footprint are respectively analyzed in detail. The result shows that the shape of footprint is similar to ellipse, and the geographical cover ability is determined by the velocity. The lift to drag ratio and terminal velocity affects footprint more greatly compared with terminal flight path angle.
出处
《现代防御技术》
北大核心
2013年第3期42-47,共6页
Modern Defence Technology
关键词
伪谱法
轨迹优化
可达区域
升阻比
终端约束
pseudospectral
trajectory optimization
footprint
lift to drag ratio
terminal confinement
