气动参数对无安定器航弹弹道特性的影响

Influence of Aerodynamic Parameters on the Trajectory Characteristics of Finless-aerial-bomb

依据理想条件下的无安定器航弹刚体弹道模型,通过计算机仿真系统分析了无安定器航弹各气动参数对航弹质心运动和绕质心运动的影响.结果表明,阻力系数变化对无安定器航弹质心运动影响十分显著,升力系数对质心运动有一定影响,阻尼力矩系数和静力矩系数对航弹的角运动特性有较大影响,对质心运动影响很小.全面掌握了气动参数对无安定器航弹弹道的影响特点.研究结果对选择恰当的无安定器航弹弹道模型、建立科学合理的无安定器航弹投弹表编拟方法有指导意义.

According to the rigid body trajectory model of finless-aerial-bomb under the ideal conditions, the influences of aerodynamic parameters on the motion of centroid and angle of finless-aerial-bomb were analyzed by theoretical simulation. The results show that the influence of variation of aerial drag coefficient on the motion of centroid of finless-aerial-bomb is significant. The coefficient of lift has some effects on the motion of centroid, and the damping moment coefficient and static moment coefficient have more effects on the angular motion. The influence of the aerodynamic parameters on the motion of finless-aerial-bomb was systemically analyzed. The research results have important guidance significance and application value to select right trajectory model of finless-aerial-bomb and create the scientific method of making bombing table of finless-aerial-bomb.