Research on Similar Conditions and Simulative Experiments of Exterior Ballistics for Low Trajectory

Similar simulation is an efficient experimental research method.Based on the fourth similarity of exterior ballistics,the similarity relationships between small-caliber simulative projectiles and medium-caliber former projectiles were analyzed in the case of low trajectory.The similar ballistic parameters of flight velocity and distance,rotational speed,and nutation property were researched.The corresponding similarity conditions were obtained.The exterior ballistics measuring method for similar simulation was worked out,and an experimental data fitting model was established.The experimental data shows that the ballistic parameters of small-caliber simulative projectiles and medium-caliber former projectiles are similar.All of these are useful for application of similar theory in exterior ballistics design.