US Government As Represented by the Secretary of the Army

Amy Wilson

Brian Edward Fuchs

Neha Mehta

Daniel Stec, Iii

Paula Cook

Victor Kokodis

George Sudol

Secondary crystalline high explosives are disclosed which are suitable for filling very small volume loading holes in micro-electric initiators for micro-electro-mechanical mechanisms (MEMS), used as safe and arm (S&A) devices. The explosives are prepared by adding the such a high explosive to an aqueous first volatile mobile phase, adding such a high explosive to a non-aqueous second volatile mobile phase, mixing the first and second volatile mobile phases and then loading the combined phases into the MEMS device and allowing the aqueous and non-aqueous solvents to evaporate depositing the high explosive. Enhanced adhesion between the deposited high explosive and enhanced rheological properties can be obtained by adding a polymeric binder to both mobile phases.

High explosive fills for MEMS devices

A selective fragmentation pattern of explosive material is applied to a surface of a munition. None, some, or all of the explosive material in the selective fragmentation pattern may be detonated, selectively stamping the surface of the munition with the detonated explosive material. The portion of the selective fragmentation pattern selected for ignition is determined by lethality requirements of a target of the munition. Upon detonation of the munition, fragments are formed based on the selected portion of the selective fragmentation pattern. Consequently, igniting all, some, or none of the selective fragmentation pattern may vary lethality of a munition and one munition may be used for a wide range of lethality.

System and method for explosively stamping a selective fragmentation pattern

Methods for making and using high explosive fills for MEMS devices

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Amy Wilson