基于正交试验的航行体弹道仿真优化设计

Simulation and Optimization Design of Vehicle Trajectory Based on Orthogonal Text

为确保水下发射航行体再入水后弹道安全,分析了航行体弹道影响因素,构建了带有阻尼板航行体的弹道数学模型,将发射后航行体与发射载体的最近距离作为安全性判定标准,采用正交试验方法,对水下航行体的阻尼板数量、尺寸及张开角度3个参数进行了仿真优化分析。仿真结果表明:当阻尼板数量为6块、长度为800 mm、张开角度为80°时,水下发射航行体质心z方向侧移量最大,航行体尾端与发射载体假想壁距离最大,安全性最高。

To ensure that the underwater launch vehicle is safe when it enters water again, the influence factor of vehicle trajectory was analyzed, then the mathematical model of a vehicle with rudder was constructed and took the nearest distance between the vehicle and the launch vehicle as the safety criterion, by using the orthogonal test, the three parameters of rudder, size and opening angle of underwater vehicle were simulated and optimized. The simulation results implied that when the number of the rudder is 6, the length of that is 800mm,and the opening angle is 80 degrees, the centroid of underwater vehicle is the biggest in direction z, the distance of the vehicle tail and the imaginary wall of launch vehicle is also biggest, and the safety is the highest.