Research property of damp tab for projectile

To reduce many factors resulted in error of projectile, a damp tap means was put forward. At first, the mechanical structure and working principle of a damp tab were introduced. Then by using MDT and Working Model 3D, the damp tab was systematically simulated and analyzed, the results of which prove the design's correctness. Additional, with hydrokinetics software to analyse the tab's liquidity, the projectile's surface airflow will not become more equably, and the projectile's head-on liquidity density will add as the attack angle increases.