一维弹道修正弹飞行稳定性研究

Research of Stability of Flight of One Dimension Trajectory Correction Projectile

摘要:

为分析一维弹道修正弹阻力片不同修正能力下,其打开后对弹丸飞行稳定性的影响大小,以某型100 mm一维弹道修正弹为研究对象,运用Simulink软件建立了6自由度刚体弹道模型,通过设置不同仿真条件,利用阻力片打开后弹丸攻角变化、陀螺稳定性判据、动态稳定性判据判断弹丸飞行稳定性;求出了在阻力片分别产生原来弹丸阻力系数3倍、4倍、5倍阻力下,为保证弹丸飞行稳定应控制阻力片打开后产生的新的静力矩的极限值应分别小于原弹丸静力矩的3倍、3.5倍、4倍;通过研究阻力片打开时间对弹丸飞行稳定性的影响,结果表明,阻力片打开时间越晚其对弹丸飞行稳定性的影响越大；分析了阻力片一定修正能力下,以不同射角射击时为保证阻力片打开后弹丸飞行稳定性,阻力片最晚打开时间。

Abstract:

To a certain type of one dimension trajectory correction projectile as the research object, six DOF rigid body model is established. By setting different simulation conditions, the stability of the projectile before and after the damper opens is analyzed by the angle of attack, gyroscopic stability criterion and dynamic stability criterion. The influence of the damper which is in different correction ability to the projectile flight stability when it opens is analyzed. In order to ensure the flight stability the limit value of the static moment are 3 times, 3.5 times, 4 times as much as original static moment when damper opens when damper produces 3、4、5 times as much resistance coefficient as original projectile. Analyzed the influence of the damper starting time to the stability of the projectile flight. The simulation results show that the later of the damper is opened the greater impact to the projectile flight. The latest open time is analyzed of the damper in a certain correction ability.