新型集成式氮气弹射系统机构仿真优化设计

Institutions Simulation and Optimization Design of New Integrated Nitrogen Ejection System

关于以高压氮气为能源的机载弹射系统优化问题,由于结构参数众多,相互之间影响较为复杂,针对上述情况建立了氮气弹射系统的数学计算模型。由于模型用传统的优化方法需要进行大量运算且较难获得全局最优解,为了在众多的结构参数中获得氮气弹射系统的最佳结构参数,建立了相应的优化设计模型,确定了合理的目标函数,并运用交替使用粗、细网格的正交优化设计方法对弹射系统进行了优化计算,得出了弹射系统的最优结构参数。优化结果表明,改进方法能简便、快捷、有效地得出全局最优解,可以节省计算工作量,降低产品开发成本。

The optimization of the airborne ejection system which uses the high pressure nitrogen as energy has many structure parameters and these structure parameters influence each other complicatedly. According to this situa- tion, the mathematical calculation model of this nitrogen ejection system was established. Using the traditional optimi- zation method needs a large number of operations and it is difficult to get the global optimal solution. In order to ob- tain the best structural parameters of the nitrogen ejection system, the corresponding optimization design model and the reasonable objective function were established from the structure parameters. An orthogonal optimization method which uses coarse and fine element meshing methods was adopted to design the experimental plan for optimizing the e- jection system, and then the optimal configuration parameters of the ejection system were obtained by optimizing the simulation results. The optimization results show that the optimization method can get global optimization solution fast, conveniently and efficiently. It can also save the computing workload and decrease the cost of the product.