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柔性弹丸飞行动力学研究
引用本文:王良明.柔性弹丸飞行动力学研究[J].兵工学报,1998,19(3):208-213.
作者姓名:王良明
作者单位:不详
摘    要:建立了大长细比弹丸刚体运动和柔性弯曲变形耦合的动力学模型;定义了柔性弹丸的平均弹轴系和刚体运动;以梁的弯曲理论为基础,推导了柔性弹丸的弯曲变形方程。在准静态变形条件下给出了柔性弹丸的攻角运动方程及其解,并由此获得了柔性弹丸的静态和动态稳定性条件,从中可看出柔性变形对弹丸飞行稳定性的影响,为长大细比弹箭的设计提供了重要的理论依据。

关 键 词:弹丸  柔性变形  弹道学  稳定性  飞行动力学

FLIGHT DYNAMICS OF FLEXIBLE PROJECTILES
Wang Liangming.FLIGHT DYNAMICS OF FLEXIBLE PROJECTILES[J].Acta Armamentarii,1998,19(3):208-213.
Authors:Wang Liangming
Abstract:A dynamic coupled-model of the rigid-body motion and the flexible bending motion for a projectile having a large slenderness ratio is developed, and the mean axis and the rigid-body motion of a flexible projectile are defined. Based on the theory of bending of a beam, equation of the bending deformation of a flexible projectile is formulated. For the case of quasi-static de formation, the equation of attack of a flexible projectile and its analytic solution are obtained, and hence the conditions of static and dynamic stabilization are presented in the paper. The bending effects are shown to lead to a decrease in the flight stability of finned projectiles.
Keywords:projectile  flexible bending deformation  aeroballistics  theory of stabilization
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