| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
|
|---|
| Outline of Final Research Achievements |
High-speed penetration experiments into sands were performed using a vertical powder gun and a penetration velocity of projectile was measured by Magnet-Coil method developed in this research. The behavior of projectile changed at transition speed, and it was found that the transition speed give a fairly good agreement with the elastic wave speed.
In our high-speed penetration experiments, it was found that the penetrating projectile meandered. In order to measure the trajectory accurately, free fall experiments were performed and the output signal of Magnet-Coil method was formulated using distance from coil center and projectile inclination as parameter. This information is very valuable to establish the method of identification for location and attitude of projectile.
|
