平头弹飞行阻力工程模型

Air Resistance Engineering Model of Flat Nosed Projectile

为了对设计过程中的小口径平头枪弹外弹道作出预测,基于空气动力学原理,建立了小口径平头枪弹的弹头阻力模型。之后进一步将弹头阻力模型和已有摩擦阻力模型,弹底阻力模型结合,得到平头弹飞行阻力模型。将阻力模型与质点弹道方程组联立求解,其结果与实验数据进行比较,发现理论计算结果与靶场实验数据吻合一致,从而证明了该平头弹阻力模型的正确性。

In order to predict the exterior trajectory of small caliber flat nose bullet in the process of design, based on the aerodynamics principle, a warhead resistance model of small caliber flat nose bullet was established. Then the warhead resistance model is further combined with the existing friction resistance model and the bottom resistance model to get the flight resistance model of the flat nose bullet. The resistance model and particle trajectory equations are combined and solved simultaneously. The results are compared with the experimental data. It is found that the theoretical calculation is consistent with the experimental data of the shooting range, which proves the correctness of the resistance model of the flat nose projectile.