US Government As Represented by the Secretary of the Army

Stevens Institute of Technology

Other

USA As Represented by Secretary of the Navy

Brian Edward Fuchs

Daniel Stec, Iii

Neha Mehta

Woo Young Lee

Gartung Cheng

James L Zunino, Iii

Matthew Henderson Ervin

Linh Tung Le

De Kong

Gerard I Gillen

Amy Wilson

Ernest L Baker

Barry Fishburn

Anne Marie Petrock

Pai-Lien Lu

Paula Cook

Amish Desai

Ming Judy Lu

Victor Kokodis

Kathy Yang

George Sudol

Emily A Cordaro

Neelam Mehta

Carl Hu

Gary G Fairbanks

Andrew C Ihnen

Daniel P Schmidt

Bob Melendes

Stephen Chau

Gregory Papatrefon

John W Woods

A method of forming a very small, i.e. microliter, finely detailed explosive train for the ignition of energetic munitions&#x2014;which train is formed by ink jetting picoliter volume droplets of an explosive ink onto the substrate; which explosive ink is a pure liquid that will not clog the ink jet printer. The explosive ink being a solution composed of a secondary organic explosive solute, a polymeric binder solute, and a polar aprotic organic solvent. Where the ink jet printer is a commercial piezoelectric type, drop-on-demand, ink jet printer capable of precisely delivering the subject picoliter volume droplets. And, which printer is capable of heating said substrate to an elevated temperature to more rapidly evaporate the solvent, leaving the desired, finely detailed, efficacious, crystalline explosive train.

Ink jet printing and patterning of explosive materials

An electrical component includes an inkjet-printed graphene electrode. Graphene oxide flakes are deposited on a substrate in a graphene oxide ink using an inkjet printer. The deposited graphene oxide is thermally reduced to graphene. The electrical properties of the electrode are comparable to those of electrodes made using activated carbon, carbon nanotubes or graphene made by other methods. The electrical properties of the graphene electrodes may be tailored by adding nanoparticles of other materials to the ink to serve as conductivity enhancers, spacers, or to confer pseudocapacitance. Inkjet-printing can be used to make graphene electrodes of a desired thickness in preselected patterns. Inkjet printing can be used to make highly-transparent graphene electrodes. Inkjet-printed graphene electrodes may be used to fabricate double-layer capacitors that store energy by nanoscale charge separation at the electrode-electrolyte interface (i.e., 'supercapacitors').

Inkjet-printed flexible electronic components from graphene oxide

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 method of forming a conductive ink bridge wire EED on either a flat or curved substrate, wherein a finely detailed bridge wire EED is printed on the substrate using a nano-particle conductive material applied with a commercially available piezoelectric drop-on-demand ink jet printer&#x2014;which bridge wire is subsequently coated with a first primary explosive layer, an optional second transition explosive layer, and a third secondary explosive layer&#x2014;such that upon creating a current through the bridge wire EED, the bridge wire is heated and the explosive layers detonate in turn, and in turn initiate the detonation of the device to which the detonator is attached.

Flexible detonator integrated with directly written energetics

A microcavity structure. In an illustrative embodiment, the microcavity structure includes a first substrate, which has a region of interest. A second substrate with a perforation therein is bonded to the first substrate. The perforation coincides with the region of interest. In a specific embodiment, the first substrate is implemented via a Printed Circuit Board (PCB). The region of interest includes one or more circuit components, including an actuator, such as a bridgewire, thereon or therein. A smoothing layer is included between the PCB and the actuator. A bonding gasket adheres the first substrate to the second substrate. The perforation accommodates energetic material that is selectively ignited via the actuator.

Multilayered microcavities and actuators incorporating same

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

High explosives suitable for filling very small volume loading holes in micro-electric initiators for micro-electro-mechanical mechanisms, used as safe and arm devices, are prepared from slurries of crystalline energetic materials including organic liquid and applied using various methods. These methods include swipe loading, pressure loading and syringe loading. The organic liquid serves as a volatile mobile phase in the slurry so as to partially dissolve the energetic material so that, upon evaporation of the mobile phase, the energetic material precipitates and adheres to the loading hole.

High explosive fills for very small volume applications

Methods for making and using high explosive fills for MEMS devices

High explosive coatings and inks suitable for use in micro-electronic initiators for micro-electro-mechanical mechanisms used as safe and arm devices, are prepared from coating compositions of crystalline energetic materials and applied using various methods. These methods include wiping and spraying, as well as, pressure applications using a syringe or the like, and application of thick film ink to write specified patterns on a selected surface. A volatile mobile phase may be added to the coating composition to partially dissolve the energetic material so that, upon evaporation of the mobile phase, the energetic material precipitates and adheres to the selected surface.

Method for producing and using high explosive material

A detonator for a hand grenade fuze comprises a detonator case; a slider that is transversely reciprocable in the detonator case from an unarmed position to an armed position, the slider including a longitudinal through-hole filled with a primary explosive; a spring that biases the slider to the unarmed position; an arming mechanism attached to the slider, the arming mechanism comprising a shape memory alloy; an explosive lead disposed below the slider; and a booster charge disposed below the explosive lead.

Hand grenade fuze

High explosives suitable for filling very small volume loading holes in micro-electric initiators for micro-electro-mechanical mechanisms, used as safe and arm devices, are prepared from slurries of crystalline energetic materials and applied using various methods. These methods include swipe loading, pressure loading and syringe loading. A volatile mobile phase may be added to the slurry so as to partially dissolve the energetic material so that, upon evaporation of the mobile phase, the energetic material precipitates and adheres to the loading hole.

Methods for making and using high explosive fills for very small volume applications

A modular crowd control munition,fires a large number of non-lethal soft pellets into a crowd,using an explosive charge. The munition,contains a pellet matrix,that houses the soft pellets,, and uses a low energy explosive sheet material,at the back of the munition,to disperse the soft pellets,. The munition,is used for close-in, &ldquo;last resort&rdquo;, crowd control to replace the necessity of using deadly force.

Non-lethal modular crowd control munition

A cylindrical jacketed core explosive configuration with a circular tapered lyer plate operatively disposed in front of it produces a high velocity jet capable of penetrating hard materials. The charge assembly length is less than 1.4 times its diameter.

Tapered disc and jacketed explosive device for projecting high velocity

Growing community of inventors

Hackettstown, NJ, United States of America

Brian Edward Fuchs