Developing New Insensitive Munitions Packaging Solutions for Missile Defense

Dr. Nema, Principal Investigator for this proposal, is currently working on a smaller diameter project for DoD. We are working on Torpedoes, Missiles, and lunch tubes which have failed the DoD codes for fast cook off, slow cook off, 50 caliber high speed bullet penetration, and fragment impact. We have made considerable progress through use of Modeling and Simulation tools such as LS-DYNA, ANSYS Multi-Physics and the INERTIA Engineering System. INERTIA Multi-physics Engineering system has been developed by Dr. Nema during the last 18 years. He is also teaching modeling, simulation, and applied finite element analysis at Indiana University, Purdue University-Indianapolis(IUPUI). Our current applied research is focused on exactly the same IM compliance such as STANAG 4375, STANAG 4396, STANAG 4439, STANAG 4382, STANAG 4241, MIL-STD-2105, and MIL-STD-2105B. The objective of this program is to develop innovative insensitive munitions packaging concepts to protect solid rocket motors (SRM) greater then 12 inches in diameter or greater from unplanned stimuli such as heat, shock and bullet/fragment impact. Our current simulation models show that bullet and fragment temperatures are higher that propellant igniting temperature. We have also found out that due to current highly conductive material used in SRMs, inside temperature is higher that igniting temperature of propellant due to high rate of fast cook off radiation force and high conductive properties. SRMs react to fire flame fast cook off and oven slow cook off. Technical objective of this proposal is to continue our Anti-Ballistic anti radiation applied research for greater than six inch missiles, lunch tubes and gas generators. We are simulating a special polymer-ceramic- fabric composite structure as protective container for four missiles containers. Are initial results for six inch tubes are very good.