基于减旋控制的侧向弹道修正技术

Technology of Lateral Trajectory Correction Based on Spin Velocity Reduction Control

为了对旋转稳定炮弹的侧向弹道进行修正,实现低成本的二维弹道修正,阐述了旋转稳定炮弹通过减旋控制减小方向偏差的修正原理;根据旋转稳定炮弹的飞行稳定性条件,推导出方向修正时修正弹的最低转速要求;建立了组合式二维弹道修正弹的飞行弹道数学模型,对修正弹的转速、方向动力平衡角、飞行稳定性和最大方向修正能力等进行了数值计算.结果表明,采用减旋控制方式可以调节弹道方向偏差,方向修正控制后修正弹的转速应高于其最低转速要求.研究结果对简易二维弹道修正技术研究有较好的参考作用.

To correct the lateral trajectory of spin-stabilized projectile and realize the two-dimension correction with low cost,the principle of decreasing the lateral deviation by using spin velocity reduction control（SVRC） for spin-stabilized projectiles was investigated.Based on the flight stability criterion of spin-stabilized projectile,the requirement of minimum spin velocity during the process of trajectory correction was deduced.The mathematical model of combinational 2D trajectory correction projectile was established.Several parameters such as the spin velocity,lateral dynamic balance angle,flight stability and maximum lateral correction capability,were numerically calculated.Results indicate that the SVRC can regulate the lateral deviation.And the spin velocity after the trajectory correction must be limited by the requirement of minimum spin velocity.The results offer reference for further research of 2D trajectory correction.