Pellet Dispense & Dispersion Mechanism For Inert Kinetic Energy Munitions

This effort will develop and evaluate four approaches to dispense and disperse pellets from kinetic energy munitions. The proposed approaches meet the Navy requirement of using either a Division 1.3 (Class B), 1.4 (Class C) explosive, or preferably no explosive at all to dispense and disperse the pellets. They include (a) airbag ejection of the pellets (1.3B); (b) pellet embedment in gas generating pyrotechnics (1.4); (c) contained propellant launch systems (1.4); and (d) aero-mechanical dispersion (no explosive). These concepts include proven existing technology (air bags), previously developed technology [Telecartridge(tm)], and two new ideas owned by Surface Treatment Technologies, Inc.(ST2)The dispersion efficiency, separation velocity, and projected separation profile of pellets will be modeled for the four approaches. Based upon the modeling results, as well as design factors each concept will receive a ranking and recommendation for advancing to Phase II. In the Phase II effort ST2 will fabricate and statically test subscale prototypes of the down selected approach using temperature profiles provided by the customer that simulate aerodynamic loading. Prototype structures will also be delivered to NSWCDD for follow-on testing.