亚音速飞行器往复式滑翔增程弹道设计

为增加亚音速巡航导弹的有效航程,提出一种往复式滑翔增程弹道方案。基于已有的气动参数建立水平直飞巡航弹道与往复式滑翔巡航弹道模型,对比分析2种弹道方案的有效航程及其特性,从能量守恒角度出发研究往复式滑翔的增程原理。进一步研究初始飞行马赫数、初始弹道倾角以及初始飞行高度对往复式滑翔弹道增程特性的影响。研究结果表明:往复式滑翔弹道能够有效增加导弹航程,相比于常规水平直飞弹道的最大飞行距离,往复式滑翔弹道的增程效率达到100.42%; 在往复式滑翔弹道能够成功的前提下,初始飞行马赫数越大,初始弹道倾角越小,初始飞行高度越低,往复式滑翔弹道的增程效率越明显。

Design on Reciprocating Glide Extended Range Trajectoryfor Subsonic Aircraft

A reciprocating gliding extended range trajectory scheme was proposed to extend the effective range of subsonic cruise missile. The models of horizontal cruise trajectory and reciprocating glide cruise trajectory were established based on the existing aerodynamic parameters. The effective range and characteristics of the two trajectory schemes were compared and analyzed. The principle of extended range of reciprocating glide trajectory was studied from the conservation of energy. The influence of initial flight Mach number,initial trajectory inclination angle and initial flight altitude on the range extension characteristics of reciprocating glide trajectory was further studied. The results show that the reciprocating glide trajectory can effectively extend the range,and the efficiency of extending range of the reciprocating glide trajectory reaches 100.42% compared with the maximum flight distance of the conventional horizontal direct-flight trajectory. On the premise of the realization of the reciprocating gliding trajectory,the greater the initial flight Mach number,the smaller the initial trajectory inclination angle and the lower the initial flight altitude,the more obvious the extending range efficiency of the reciprocating glide trajectory.