礼花弹升空过程中自旋作用对弹道的影响

The Effect of Rotation on the Ballistic Trajectory of Firework Bomb

为确定8号礼花弹升空过程中自旋作用对弹道的影响,运用数值计算方法对礼花弹自旋作用产生的空气动力学影响进行了模拟,确定了自旋作用对礼花弹水平力作用和垂直力作用的拟合公式,并通过发射试验确定了实际的开爆时间、开爆位置和飘散落地位置。研究表明数值模拟结果与试验结果吻合度好,该模型可用于今后对大型焰火燃放活动中不同礼花弹的水平和垂直安全距离的计算和分析。

In order to determine the effect of rotation motion on the ballistic trajectory of the 8-inch firework bomb,numerical calculation methods were used to simulate the aerodynamic effects of the rotation motion.The formula for the vertical and horizontal force was confirmed,as well as the time and location of the detonation,landing position of firework bomb were obtained by launching test.The study show that numerical simulation are consistent with the test results,therefore,this model can be used to calculate and analyze the horizontal and vertical safety distances of different fireworks shells in large-scale fireworks display activities.