In the round-bore electromagnetic rail launcher with unbiased external trajectory,the une-ven distribution of electromagnetic force causes the projectile to rotate at low speed.This phenomenon has a great impact on the rail life and firing accuracy.For the low speed projectile with unstable exter-nal trajectory attitude,the projectile speed measuring method of conventional artillery will lead to a large error and cannot meet the measuring accuracy requirements.Based on the monocular or binocular vision system,the measuring principle and method of low speed simulated projectiles was studied,measuring errors were analyzed and experiments were carried out.The results show that the measuring method can be used in the short distance,low speed test and results are accurate and reliable.The quantitative method can provide reference for optimizing the launcher structure and developing ammuni-tion system.
关键词
电磁发射/旋转弹丸/转速测量/视觉系统
Key words
electromagnetic launch/spinning projectile/speed measurement/visual system
维普
万方数据