飞行器往复式滑翔延时弹道特性

为进一步延长侦察类巡航导弹的飞行时间，提出一种新型亚音速往复式滑翔盘旋弹道方案，并分析该弹道方案的延时效率及其特性。通过计算流体力学数值风洞获取飞行器的气动参数，采用4阶Adams-Moulton算法数值求解飞行器的弹道控制方程组，对比分析水平盘旋和往复式滑翔盘旋弹道方案的飞行时间差异，进一步分析飞行器的初始速度和初始弹道倾角对往复式滑翔盘旋弹道飞行时间的影响。结果表明：飞行器往复式滑翔延时弹道方案可以延长飞行时间，相对于水平盘旋弹道最优工况延时效率可达到14.79%；在飞行器往复式滑翔盘旋弹道实现的前提下，飞行器的初始速度和初始弹道倾角对往复式滑翔盘旋弹道的飞行时间影响不大。

Extending-time Trajectory Characteristics of Reciprocating Glide of Flying Vehicle

A subsonic “reciprocating gliding-hovering” trajectory scheme is proposed to further extend the flight time of reconnaissance cruise missiles. The extending-time efficiency and characteristics of trajectory scheme are studied. The aerodynamic parameters of flying vehicle are obtained through CFD numerical wind tunnel test, and the fourth-order Adams Moulton algorithm is used to solve the equations of trajectory control of flying vehicle. The difference between the the flight times of fliying vehicles in “horizontal-circling” trajectory and “reciprocating gliding-circling” trajectory schemes is compared and analyzed, and the influences of initial velocity and initial trajectory angle on the flight time of “reciprocating gliding-circling” vehicl are further studied. The results show that the reciprocating glide extending-time trajectory scheme of flying vehicle can extend the flight time, and the extending-time efficiency can reach 14.79% relative to the optimal working condition of “horizontal-circling” trajectory. On the premise of the realization of the “reciprocating gliding-circling” trajectory, the initial velocity and initial trajectory angle of flying vehicle have little effect on the flight time of flying vehicle in the “reciprocating gliding-circling” trajectory scheme.