临近空间固体动力飞行器发动机与轨迹一体化设计优化

针对临近空间多级固体动力飞行器发动机与轨迹一体化设计优化问题,提出一种基于序列代理优化的高效设计方法.为了准确计算发动机的性能特性,对发动机进行了几何参数化建模,并针对复杂装药的燃面计算,提出了基于移动四面体的燃面计算算法.为了准确获得给定设计方案的最大航程,采用自适应Legendre-Gauss-Radau伪谱法进行...

Integrated Design Optimization for Motor and Trajectory of Near Space Solid Rocket Motor Powered Vehicle

An efficient method based on sequential surrogate-based optimization was proposed to realize the integrated design optimization for motor and trajectory of multi-stage solid powered vehicle in near space. In order to calculate the performance of the motor accurately, the geometric parametric modeling of the motor was carried out, then a marching tetrahedron method was developed to compute burning surface regression for complex propellant grain. Maximum range of vehicle with given motor design scheme was evaluated based on an adaptive Legendre-Gauss-Radau pseudospectral method. To improve the optimization efficiency, a multi-sampling efficient global optimization method based on Kriging surrogate model was proposed and numerically verified. The results show that our method has a high rate of convergence, and can significantly reduce the calculation times of the time-consuming objective function and constraint function compared with the traditional parameter optimization algorithms. It demonstrations high efficiency on implementing the integrated design optimization for motor and trajectory of multi-stage solid powered vehicle in near space.