Open Access
Subscription or Fee Access
Experimental Study of Low Speed Vertical Water Entry of Projectiles
Abstract
Experimental studies of the vertical water entry with different head shapes of projectiles were conducted with high-speed camera to capture the cavityrunning phase. To focus on the formation, development and closure of cavity, the projectiles of 90° cone-shaped head, elliptical head and cut-cone head to entry water at a speed of 2.8m/s were used. And the experiments of different speed vertical water entry with 90° cone-shaped head projectile were also conducted. Experimental results showed that there were four types of cavity pinch-off after projectile entered the water: quasi-static seal, shallow seal, deep seal and surface seal. There were two water jets after the closure of splash water curtain; one was upward, the other was downward. The critical water entry speed to occur cavity on the warhead of projectile was 0.64m/s.
DOI
10.12783/ballistics2017/16776
10.12783/ballistics2017/16776