Unique Reactive Material Liners for Shaped Charge Jets against Fortified Structures Navy SBIR FY2008.1 Sol No.: Navy SBIR FY2008.1 Topic No.: N08-028 Topic Title: Unique Reactive Material Liners for Shaped Charge Jets against Fortified Structures Proposal No.: N081-028-0896 Firm: Enig Associates, Inc. 12501 Prosperity Drive Suite 340 Silver Spring, Maryland 20904-1689 Contact: Fred Grace Phone: (301) 680-8600 Web Site: www.enig.com Abstract: This proposal addresses the use of reactive materials in a tandem warhead system to enhance wall-breaching capability for targets of concrete and rock. In the system, a precursor shaped charge jet contains reactive material that conditions the target during the penetration process so that the follow-through warhead can push through the target. To maximize effects, the research develops a process used to select reactive materials and/or establishes requirements upon which advanced reactive materials can be based, including base line materials, mixtures variations, as well as new promising combinations. As a means to utilize reactive armors in shaped charge liners, high-strain-rate and equation-of-state properties of selected reactive materials will be characterized. These descriptions will be incorporated within hydrocodes such as CALE and CTH to examine methods to accelerate liners and form jets using reactive materials and penetration dynamics into targets. Phase I will select reactive material candidates, develop several scale-model shaped charge designs, and establish improvements in target perforation relative to a base-line aluminum liners. Phase II will further improve first order HSR and EOS models, refine the selection and design process, fabricate shaped charge liners at scale model size, test liners using flash x-ray coverage and assess wall-breaching capabilities. Benefits: The development and application of reactive materials as liners for shaped charges will provide a range of new developments in materials technology as well as new materials descriptions for some materials where inadequate models exist today. The reactive materials, formulated from micron size particles, have potential for various applications where nonexplosive reactions can be used within jets to enhance penetration or in high-rate materials processing techniques. The material descriptions involve developments of high-strain-rate behavior and high-pressure equation-of-state for porous mixtures of particulate materials. Similar models developed in this program for concrete and rock also apply to large classes of brittle materials. Together the models have an application to a wide range of materials to include geological materials such as sand, soil, rock, and ice, for example, and construction materials such as concrete. Direct application of reactive materials as a processing agent may be used to improve material properties and/or be useful in demolition of material such as the present application to concrete. Consequently, this research will provide new capabilities for geological exploration, mining, meteoric impact, shock synthesis of new materials, oil exploration, and commercial blasting. Military benefits will include increased lethality of weapons deploying shaped charges and/or explosively formed projectiles. Further, with improved materials descriptions, the weapon design process will improve especially for weapons used in ballistic attack. These include anti-material, anti-tank, anti-bunker, and hard target attack scenarios. Return