Determination of Nonpropagation Distances for 25-mm XM792 HEI-T cartridges
Final rept. Mar 1981-Dec 1982
ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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As part of an Army-wide expansion and modernization program, safe separation distance criteria for the production of a family of 25-mm tank cartridges M791 APDS-T, M792 HEI-T, and M793 TP-T were studied, tested, and determined in a series of tests. Since all cartridges use the same assembly line and since the M792 contained the greatest quantity of explosive, the M792 was selected for determining the nonpropagation distance. The test program consisted of five phases, each simulating a component or cartridge location on the assembly line. Each of the five phases was further subdivided into exploratory and confirmatory tests to determine and statistically confirm the established distances, with the following results The type I explosive pellets stacks of three had a safe distance of 25.4 mm 1.0 in., with a 6.16 propagation probability. The type II explosive pellets had a safe distance of 12.7 mm with a 6.85 propagation probability. The safe distances for the loaded body assemblies, fuzed projectiles, and complete cartridges, vertically oriented, were all 63.5 mm 2.5 in., with 7.11, 6.38, and 6.85 propagation probabilities, respectively.
- Ammunition and Explosives