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The US Army Uses Reliability Analytics and Design of Experiments to Test, Evaluate, and Down-Select a Small-Caliber Ammunition ‘Green’ Primer Design for Improved Soldier Safety

The US Army Armament Research, Development and Engineering Center (ARDEC) is working in partnership with government contractors to design and develop lead-free primers for use in small arms training munition for use by US Warfighters in close-quarters battle training structures, often referred to as shoothouses. A comprehensive series of tests were planned and conducted, and detailed statistical analyses of the results were executed using modern statistical best practices. Tests were designed to measure performance and estimate reliability relevant to several key performance attributes which included function and casualty (F&C) or stoppage rates / reliability, energetic sensitivity, dispersion, and electronic pressure, velocity, and action time (EPVAT). Results from these tests were used to down-select the best design configuration from four different candidate primer designs with two different propellants.