【作者】 李东；

【导师】 姚卫星；

【作者基本信息】 南京航空航天大学 ， 飞行器设计， 2017， 硕士

【摘要】 箭载发射无人机是将无人机折叠后,装入火箭并且利用火箭将无人机送入高空。可以弥补大型无人机使用与维护复杂,适用范围窄,布置灵活性较差,目标明显的缺点,有着广阔的应用前景。本文对箭载发射无人机系统的无人机设计方案和火箭发射过程的运动学和动力学进行了研究,主要研究工作包括:(1)提出一种大展弦比箭载发射无人机的设计方案,针对其设计特点及设计要求,从总体布局、主要参数确定、任务规划、折叠方式和性能评估等方面对无人机进行了概念设计。(2)对箭载发射无人机飞行过程进行了阶段划分,给出了各个阶段的动力学方程。并对这些方程进行了归一化处理。使用李级数数值解法求解微分方程,并且与传统的龙格库塔法进行比较,表明李级数解相对简单。(3)以无人机的方案设计结果为运载火箭的设计输入,参考传统运载火箭的设计方法,对箭载发射无人机的运载火箭进行了方案设计。在此基础上,使用多岛遗传算法对弹道进行了优化设计。(4)分析箭载发射无人机的弹道中的能量变化规律,类比光学中的费马原理,提出了一种寻找最小消耗能量路径的弹道优化方法。将其与传统的弹道优化设计方法进行比较分析。本文的工作具有一定工程实用性,对箭载发射无人机的设计研究具有一定参考意义更多还原

【Abstract】 Rocket carrying and launching UAV is to fold the UAV into the rocket and use the rocket to send the UVA into the air.This way can make up for the shortcomings of complicatedly use and maintenance,narrow scope application,poor layout flexibility,obvious aim of UVA,and this way has a broad application prospect.In this paper,the rocket aboard UAV system and kinematics and dynamics of the process of rocket’s launch are studied:(1)This paper presents a preliminary design of a high aspect ratio UAV,according to its design features and design requirements,make a conceptual design include the general layout,main parameters,folding type,mission planning and performance evaluation.(2)The flight process of the rocket carrying and launching UAV is divided into stages,and the dynamic equations are provided.These equations are simplified by normalized treatment.Using the Lie series numerical solution to solve differential equations,and compares it with the traditional Runge-Kutta method,showing the Lie series method is relatively simple.(3)The design parameters of rocket design is from the results of UAV design.Based on the design method of the traditional launch rocket,the concept design of the launch vehicle is presented.On this basis,the multi Island genetic algorithm is used to optimize the trajectory.(4)Analysis the launch energy variation of rocket carrying and launching UAV trajectory,through the comparison of Fermat’s principle in optics,proposing a trajectory optimization method to find the minimum energy consumption path.Compared with the traditional trajectory optimization design method.The work of this paper has certain engineering practicability,and has certain reference value to the design and research of the rocket carrying and launching UAV.更多还原