基于激光推进的光船发射任务设计与参数优化分析

针对发射初始质量为100kg的光船到近地圆轨道的任务,研究了激光平均功率、激光大气传输特性、光船激光接收面面积、发动机比冲、发动机能量转化效率等参数之间的相互关系及光船飞行任务的优化问题。针对激光发射光船的具体要求,由功率估算公式计算出激光平均功率,从激光作用范围估算出光船的激光接收面的最小面积;基于光船飞行动力学模型,结合估算的参数,应用序列二次规划方法优化计算出光船飞行的最优弹道。计算结果表明,光船入轨质量可达到35.5kg,最优比冲为8140m/s。

An Investigation of Lightcraft Launching Task Design and Optimum Parameter Analysis Based on Laser Propulsion

In order to launch objects into low-earth circular orbit using an earth-based laser and a lightcraft with 100kg initial mass,the relationships among the concerned parameters such as the laser average power,the characteristics of laser propagation in atmosphere,light receiver size of lightcraft,the specific impulse of engine,and the energy conversion efficiency of engine were investigated.Meanwhile,the optimal trajectory for such a task was also studied.The necessary average laser power was estimated from th...