内装式空中发射运载火箭点火状态多目标优化

针对内装式空中发射运载火箭状态空间广泛的特点,提出基于粒子群优化算法的空中发射系统的多目标优化方法。定义了以箭机分离时载机的姿态角、稳定伞的阻力特征、运载火箭点火时的角速度为自变量的粒子群广义位置和广义速度。建立了以箭机安全距离、运载火箭有效动能与耗能的比值、运载火箭控制机构耗能为变量的多目标优化模型。利用MATLAB软件计算优化模型,分析优化结果,证明适用于解决空中发射系统的优化问题。

Multipurpose Optimization on Fired State of Internally Carried Air-launched Launch Vehicle

Aiming at the wide state spaces of internally carried air-launched launch vehicle,a multipurpose optimal method based on PSO for air-launched system was proposed.Particle swarm’s generalized position and generalized velocity based on three independent variables that are the attitude angle of aerial carrier,the resistance features of parachute and the angular velocity of launch vehicle when it was fired were defined.A multi-object optimization model was established based on three factors that are the safe distance between plane and launch,the ratio of launch vehicle’s effective kinematic energy to envload and the envload of launch vehicle’s control gear.The optimization model could be figured out by MATLAB,analysis of the result,which validates this method,is suitable for solving the optimized problem of air-launched system.