采用模式搜索法对轨道炮重要参数的优化设计

Optimal calculation of railgun launthed parameters with internal penalty function method

在充分考虑了电枢运动中所受到的主要阻力,包括等离子体的粘滞阻力、惰性阻力及空气阻力的基础上,构建了包含电枢速度、轨道间距和电枢位移量等在内的优化模型,以及轨道间距、轨道的高和轨道的厚度有关的电感梯度的模型,并采用模式搜索法进行优化计算。优化结果表明:当轨道间距和电枢位移量一定时,弹丸发射速度将会达到最大。而调整发射轨道的高度、厚度可以达到调整弹丸的发射速度的目的。研究结果可为电磁炮相关参数的设计和制造提供了理论上的依据和技术上的支持。

main resistances in armature motion were considered in the full in model,they were plasma viscous drag,inertial drag and air drag.The optimization model that it will optimize calculation in using Pattern search method between armature speed,two track spacing of the rail and The armature movement displacement quantity was established;And there are the calculation model with two rail spacing,rail high,the thickness of the track on,The optimization results showed when Two track spacing of the rail and The armature movement displacement quantity,the projectile will get the most large launched speed;it will adjust to the height of the rail,the thinkness of the rail,between two rails distance to reach to purpose that it adjust launched speed of projectile.The results of the study laid a theoretical foundation for design and manufacturing of the railgun.