Determination of Minimum Nonpropagation Distances of Various Configurations of 155mm M549 HERA Projectiles
ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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A series of tests were conducted to establish the minimum nonpropagation distance between configurations of 155mm M549 HERA projectiles, each loaded with 7.3 kilograms 16.0 pounds of Composition B. Two configurations were tested, single projectiles and pallets of eight projectiles arrayed in a 2 x 4 matrix. Each test array was supported above the ground surface to simulate the actual conveyor systems standoff distance. This effort was in direct support of the modernization of the Iowa Army Ammunition Plant, Burlington, Iowa, but it is applicable to other similar facilities. The test results indicated that the minimum nonpropagation distance for single projectiles is 1.5 meters 5.0 feet unshielded and 8.9 centimeters 3.5 inches if a 7.6 centimeter 3.0 inch diameter aluminum bar 6061-T6 is utilized as a shield between projectiles. The nonpropagation spacing between pallets of eight projectiles is 3.1 meters 10.0 feet when a shielding arrangement consisting of two of the aforementioned aluminum bars is aligned with the projectiles on each end of the pallets.
- Ammunition and Explosives