迫弹横向脉冲控制飞行稳定性  

Flight Stability of Mortar Projectile Under Lateral Pulse Jet Control

作　　者：曹小兵[1] 徐伊岑[2] 王中原[1] 余劲天[1] 

机构地区：[1]南京理工大学动力工程学院,南京210094 [2]无锡商业职业技术学院机电工程系,江苏无锡214153

出　　处：《弹道学报》2008年第4期41-44,共4页Journal of Ballistics

摘　　要：为了研究迫弹利用脉冲发动机进行弹道修正而引起的飞行稳定性问题,分析了横向脉冲控制力及控制力矩,建立了有控弹道模型,在一定的假设条件下推导出脉冲作用段迫弹的攻角方程,讨论了脉冲作用段迫弹的飞行稳定性,给出了脉冲冲量大小及距质心作用距离的约束条件.研究表明,正常情况下,横向脉冲控制对迫弹的动稳定条件、追随稳定条件及共振不稳定条件没有影响,但需控制脉冲冲量大小和距质心作用距离,使得扰动引起的攻角增量幅值不超过允许的极限值,保证迫弹在脉冲作用后仍能稳定飞行.In order to research the flight stability of mortar projectiles using lateral pulse jet control for trajectory correction, the impulse force and moment were analyzed, and the mathematical model for the traiectory was established. Relying on some assumptions, the equation of angle of attack （AoA） during pulse jet firing duration was deduced, and the flight stability of the projectile was discussed. A constraint condition of the impulse magnitude and the distance from the projectile centroid to individual pulse jet was provided. The results indicate that lateral pulse jet control has no influence on the dynamic stability condition, the trailing stability condition, and the resonance unstability condition. For the motion to be stable, following the action of pulse jets, the impulse magnitude and the pulse force acting point should be limited, such that the increment amplitude of AoA induced by the detonation of pulse jets is under an allowed upper limit.

关 键 词：迫弹 弹道修正 横向脉冲发动机 飞行稳定性 尾翼弹 

分 类 号：TJ765.1[兵器科学与技术—武器系统与运用工程]