Explosive Or Propellant Article Shaping Or Treating Patents (Class 264/3.1)
  • Patent number: 10125058
    Abstract: An encapsulated, particulate energetic composition includes one of explosive particles of a known size, oxidizer particles of a known size, and a mixture of explosive particles and oxidizer particles of known sizes, in which particles of one of the explosive particles, the oxidizer particles, and the mixture of the explosive and the oxidizer particles, are encapsulated by a combustible fuel of a known thickness to enhance the energy output. A method of making the encapsulated, particulate energetic composition includes placing one of explosive particles, oxidizer particles, and a mixture of explosive particles and oxidizer particles within a deposition chamber, mixing one of the explosive particles, the oxidizer particles, and the mixture of explosive particles and the oxidizer particles, and depositing, to a known encapsulating thickness, a combustible fuel onto the one of the explosive particles, the oxidizer particles, and the mixture of explosive particles and oxidizer.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: November 13, 2018
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventor: Victor J. Bellitto
  • Patent number: 9546856
    Abstract: A method of filling a projectile case with energetic material includes isostatically pressing a column of the powder to create a pre-formed billet (PFB). The single PFB is placed in and then pressed into the projectile case to create the finished warhead. The single PFB effectively fills a projectile case having a large l/d ratio. The single PFB eliminates the problems and poor quality associated with pressing multiple increments in a projectile case.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: January 17, 2017
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: John Centrella, John Sequeira
  • Patent number: 9228904
    Abstract: Method for manufacturing a measuring apparatus for determining and/or monitoring at least one process variable. At least one sensor element is inserted into an at least partially pot-shaped mold, and the mold is at least partially filled with a casting material composed at least of a first component and a second component. The mold is filled with the casting material, at least partially, with at least the following steps at least one predeterminable amount of the first component of the casting material is charged into the mold; at least one predeterminable amount of the second component of the casting material is charged into the mold; and the mold is vibrated and/or caused to oscillate with a predeterminable frequency. Furthermore, a method for filling an at least partially pot-shaped mold is disclosed.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: January 5, 2016
    Assignee: ENDRESS + HAUSER WETZER GMBH + CO. KG
    Inventors: Dirk Boguhn, Torsten Iselt
  • Patent number: 9052173
    Abstract: A sabot petal having an axis parallel to or coinciding with the launch axis. The sabot petal is formed from a plurality of stacked sheets of composite material consisting of a fiber reinforcement and a polymer resin matrix. Each composite sheet is in a plane rotationally offset from the meridional plane which is defined by the launch axis and radial axis of the sabot petal's cylindrical coordinate system.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: June 9, 2015
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Michael A. Minnicino, II
  • Publication number: 20150035317
    Abstract: A fender bracket includes a composite structure having a first flange to operatively connect to a fender, a second flange to operatively connect to a vehicle body structure, and a web connecting the first flange and the second flange. At least one actuator is positioned in at least a portion of the web. The at least one actuator is selected from a piezoelectric actuator, an active material actuator, and a pyrotechnic actuator. The at least one actuator is to cause a fracture or buckling of the web in response to an activation signal.
    Type: Application
    Filed: July 29, 2014
    Publication date: February 5, 2015
    Inventors: Venkat Aitharaju, Hamid G. Kia
  • Publication number: 20140345486
    Abstract: A booster explosive (10) is comprised of assembled components comprising a canister body (12, 112) having a fuse tunnel (22) formed integrally therewith and a separate cap well (14, 114) mounted within the canister body (12, 112) which is filled with a solid cast explosive (34). The connector end (14c, 114c, 214c) of cap well (14, 114) is configured to engage cap well mounting fixture (28, 128) disposed within the canister body (12, 112). Cap well mounting fixture (28, 128) has a flexible and resilient crown-shaped locking member (28a, 128a) formed integrally therewith and is otherwise configured to positively retain a detonator (16, 116) within the cap well (14, 114). More than one cap well (214a, 214b, 214a?, 214b?) and more than one fuse tunnel (222a, 222b, 222a?, 222b?) may be provided in the canister body (212, 212?).
    Type: Application
    Filed: May 9, 2012
    Publication date: November 27, 2014
    Applicant: DYNO NOBEL INC.
    Inventors: Michael Ray Most, Leonardo Gabriel Rivera, Lawrence J. Shank, III
  • Patent number: 8770294
    Abstract: A proppant comprises a particle and a polyamide imide coating disposed on the particle. A method of forming the proppant comprises the steps of providing the particle, providing the polyamide imide coating, and coating the particle with the polyamide imide coating.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: July 8, 2014
    Assignee: BASF SE
    Inventors: Christopher Tanguay, Rajesh Kumar
  • Patent number: 8763534
    Abstract: To increase the function and safety of a weapon, it is proposed that the molded part, as connecting site particularly between a projectile and a preferably combustible sleeve containing a driving mechanism, be constructed in such a way that, in a predefined region, said molded part has a felt with an energetic material and/or an inert material.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: July 1, 2014
    Assignee: Nitrochemie Aschau GmbH
    Inventor: Walter Lebacher
  • Patent number: 8741191
    Abstract: A method of making an explosive charge liner comprises introducing powdered material into a basin defined by a die block, where a punch is shaped to interact with the basin, excluding the powdered material from a central portion of the basin, pressing the punch into the powdered material in the basin to form the explosive charge liner, and removing the explosive charge liner from the die block. The explosive charge liner comprises an aperture in an apex area of the explosive charge liner corresponding to the central portion when removed from the die block.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: June 3, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Jerry L. Walker
  • Patent number: 8727003
    Abstract: An ultra-lightweight, high strength ceramic proppant made from mixture of naturally occurring clays, preferably porcelain clay, kaolin and/or flint-clay, earthenware clay or other naturally occurring clays having an alumina content between about 5.5% and about 35%. The proppant has an apparent specific gravity from about 2.10 to about 2.55 g/cc, and a bulk density of from about 1.30 to about 1.50 g/cc. This ultra-lightweight proppant is useful in hydraulic fracturing of oil and gas wells, and has greater conductivity than sand at pressures up to 8,000 psi as measured by Stim-Lab after 50 hours and 275° F. on Ohio Sandstone, in the presence of deoxygenated aqueous 2% solution of KCI.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: May 20, 2014
    Assignee: Prop Supply and Service, LLC
    Inventors: Ying Li, Zhijie Huang, Shengming Lin, Wenzhong Wu
  • Patent number: 8707843
    Abstract: The present invention provides an improved kinematic countermeasure flare and method of constructing the same wherein the housing has integrated internal features. The flare nose weight is set at the end of a die core prior to molding for integration with the housing. Longitudinal grooves and other recesses in the die core allow for the formation of internal longitudinal ribs which propellant can bond to and a retaining bead for retaining the nose weight in the housing which are integrated with the housing. Propellant is cast into the formed housing. A propellant shaping mandrel is then inserted into the formed housing thereby forcing the propellant into the internal cavity created by the integrally molded longitudinal ribs, the shaping mandrel and the wall of the flare housing such that the propellant is bonded to the interior housing wall and the longitudinal ribs.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: April 29, 2014
    Assignee: Kilgore Flares Company, LLC
    Inventor: Alan Phillips
  • Publication number: 20140097551
    Abstract: A method for manufacturing training aid materials for detecting homemade explosives includes spreading an explosive powder on a porous surface, storing the surface in a container that facilitates sublimation of the explosive powder such that the explosive powder redeposits onto the surface and into the pores over a period of time, and removing the surface from the container after the period of time to yield training aid materials. An additional method includes preparing a dilute solution of an explosive reaction mixture, and depositing the dilute solution on a surface prior to formation of an explosive product by the explosive reaction mixture. The surface is stored in a contain that facilitates formation of the explosive product, and removed after a period of time and cleaned to remove unreacted precursors to yield training aid materials.
    Type: Application
    Filed: February 25, 2013
    Publication date: April 10, 2014
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventor: Doan-Trang T. Vu
  • Publication number: 20140026537
    Abstract: The Multiple Use Plug Hybrid (for) Nanosats (“MUPHyN”) prototype thruster is being developed to fill a niche application for NanoSat scale spacecraft propulsion. The MUPHyN thruster uses safe-handling and inexpensive nitrous oxide (N20) and acrylonitrile-butadiene-styrene (ABS) as propellants. The MUPHyN thruster can provide an enhanced propulsive capability that will enable multiple NanoSats to be independently repositioned after deployment from the parent launch vehicle. Because the environmentally benign propellants are mixed only within the combustion chamber once the ignition is initiated, the system is inherently safe and can be piggy-backed on a secondary payload with no overall mission risk increase to the primary payload.
    Type: Application
    Filed: July 30, 2013
    Publication date: January 30, 2014
    Applicant: UTAH STATE UNIVERSITY
    Inventors: Shannon D. Eilers, Stephen Whitmore, Zachary Peterson
  • Publication number: 20140026774
    Abstract: An initiator assembly can include an outer body can have a first end, a second end, and an internal passage between the first and second ends. An initiator canister can be joined to the outer body at the first end and can define a charge chamber that includes a pair of pins extending therefrom. An insulative material can be molded within the passage to form an insulative structural member that joins the canister and pins to the outer body and insulates the pins and a portion of the canister from electrical contact with the outer body. An electrostatic discharge dissipater can be formed from an electrically conductive material and can be molded to the outer body. The dissipater can provide a controlled dissipation path for electrostatic discharge energy carried by the initiator assembly.
    Type: Application
    Filed: March 30, 2012
    Publication date: January 30, 2014
    Applicant: AUTOLIV ASP, INC.
    Inventors: Scott C. Gordon, Jeffrey T. Kida, Benoit Sable
  • Publication number: 20130239834
    Abstract: Igniter base for a pyrotechnic initiator has a glass base together with fused-in contact pins that function as a pole carrier and thus fixes the contact pins in secure correlation to one another. The end side of the glass base and the contact pins form a level plane, so that an ignition bridge resting flush on the glass base can be attached to the poles. The contact pins project beyond the glass base on the opposite side and a part of the glass base and a part of the contact pins projecting beyond the glass base are equipped with a plastic jacketing.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 19, 2013
    Applicant: A & O TECHNOLOGIE GMBH
    Inventors: Andre KRAFT, Christian KUHN, Olaf JURKOWSKI
  • Patent number: 8449798
    Abstract: A die set for forming explosive charge liners from powdered material is provided. The die set comprises a die block defining a basin and a punch shaped to interact with the basin. The die block and the punch are configured to exclude powdered material from a center axis of the basin.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 28, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Jerry L. Walker
  • Publication number: 20130042951
    Abstract: Embodiments of the invention relate to systems and methods for casting hybrid rocket motor fuel grains. In one embodiment, a method for casting a rocket motor fuel grain can be provided. The method can include providing a positive image of a port made from at least one material. The method can further include disposing at least one fuel material around at least a portion of the positive image of the port. Further, the method can include removing the at least one material, wherein a negative image of the port is formed in the at least one fuel material.
    Type: Application
    Filed: August 1, 2012
    Publication date: February 21, 2013
    Applicant: THE AEROSPACE CORPORATION
    Inventor: Jerome Keith Fuller
  • Publication number: 20120305148
    Abstract: A malleable solid explosive that is in the form of a solid block consisting, for at least 98% of its weight, of a pulverulent explosive charge and of a liquid chosen from polyol polymers of the group of polyisobutylene polyols, polybutadiene polyols, polyether polyols, polyester polyols and polysiloxane polyols, whose number-average molecular mass is between 500 and 10 000, and mixtures thereof.
    Type: Application
    Filed: December 20, 2010
    Publication date: December 6, 2012
    Applicant: EURENCO
    Inventor: Bernard Mahe
  • Publication number: 20120291930
    Abstract: A cast reactive metal body that can be used as weapon cases is offered. It is cast with aluminum or aluminum alloys with small particles and/or fibers of metals of high density such as molybdenum, tungsten or hafnium. Aluminum alloys are those that can get easily ignited when heated and burn fast afterwards in particulate forms. Metals that react intermetallically with aluminum are excluded. The particles and fibers are of the size between a few microns and a few hundreds of microns in diameter. The length of the fibers is longer than the diameter. The weight percentage of aluminum and/or aluminum alloys range from 10 to 90 percent and the weight percentage of heavy metal particles/fibers ranges from 90 to 10 percent. Other inert materials such as ceramic particles can be added in small amounts.
    Type: Application
    Filed: May 20, 2011
    Publication date: November 22, 2012
    Inventor: Kibong Kim
  • Patent number: 8309001
    Abstract: A highly-filled paste, and a method and device of de-aerating and injecting the paste, the paste including: (a) a solid filler; (b) an organic binder, and (c) a residual gas, wherein the paste contains at least 80 volume-% of the solid filler and has a viscosity exceeding 100 kilopascal·seconds, wherein the filler, binder, and residual gas are intimately mixed so as to form a substantially homogeneous paste, and wherein a composition of the solid filler, binder, and residual gas is selected such that the homogeneous paste has: an average density greater than 98.5% of a Theoretical Maximum Density (TMD).
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: November 13, 2012
    Assignee: Rafael Advanced Defence Systems Ltd
    Inventors: Tamar Kaully, Dganit Shacham, Haim Baniste, David Tidhar, Corrine Nadiv
  • Patent number: 8252210
    Abstract: With the invention, a method and a device for explosive forming of work pieces, in which at least one work piece is arranged in at least one die and there deformed by means of an explosive to be ignited, is to be improved, in that an ignition mechanism that is technically easy to handle is produced with the shortest possible setup times, which permits the most precise possible ignition of the explosive with time-repeatable accuracy. This task is solved by a method and device, in which at least one work piece is arranged in at least one die and deformed there by means of an explosive being ignited, in which the explosive is ignited by means of at least one energy beam.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: August 28, 2012
    Assignee: Cosma Engineering Europe AG
    Inventors: Alexander Zak, Andreas Stranz
  • Patent number: 8173430
    Abstract: Provided is a simulant material for simulating hazardous materials, including a quantity of at least one explosive material and at least one inert material. The simulant material is a non-explosive material and is in the form of a homogenous, flexible and non-particulated material. Also provided is a method for manufacturing such a simulant material.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: May 8, 2012
    Assignee: Rafael Advanced Defense Systems Ltd.
    Inventors: Yael Cohen-Arazi, Tamar Kaully, Edith Sokol, Aviv Nisan
  • Publication number: 20120079807
    Abstract: The main subjects of the present invention are: a process for obtaining a solid composite propellant (with a polyurethane binder filled with ammonium perchlorate and with aluminum): characteristically, the ammonium perchlorate charge of said propellant is obtained from at least two charges each having a specific monomodal particle size distribution. It is thus sought to reduce the thrust oscillations and the alumina deposits at the back of the engine; a solid composite propellant, the solid propellant charges and the associated rocket engines.
    Type: Application
    Filed: June 29, 2010
    Publication date: April 5, 2012
    Applicant: SME
    Inventors: Helene Blanchard, Marie Gaudre, Jean-Francois Guery, Guillaume Fouin, Stany Gallier
  • Patent number: 8062563
    Abstract: A method of manufacturing explosives from a raw explosive material by gelatinizing the raw explosive, characterized in that the raw explosive is subjected to isostatic pressing prior to the gelatinization step.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: November 22, 2011
    Assignee: Bowas AG für Industrieplanung
    Inventor: Gerhard Huber
  • Publication number: 20110168306
    Abstract: The invention relates to a cast explosive composition comprising a polymer-bonded explosive and a defoaming agent, and to a process for reducing the number and/or total volume of voids in a cast explosive composition comprising the steps of: combining a polymer-bonded explosive and a defoaming agent; and casting the explosive composition. The defoaming agent may be used for reducing the number and/or total volume of voids in a cast explosive composition and the cast explosive composition may be used in an explosive product.
    Type: Application
    Filed: August 27, 2009
    Publication date: July 14, 2011
    Applicant: BAE Systems PLC
    Inventors: Ronald Edward Hollands, Ian Ewart Paterson Murray
  • Publication number: 20110140293
    Abstract: A method of manufacturing explosives from a raw explosive material by gelatinizing the raw explosive, characterized in that the raw explosive is subjected to isostatic pressing prior to the gelatinization step.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 16, 2011
    Applicant: Bowas AG fur Industrieplanung
    Inventor: Gerhard Huber
  • Patent number: 7956104
    Abstract: A pourable opaque centerport for solid propellant rocket motors and method for applying the same are disclosed. The pourable centerport inhibitor for solid propellant rocket motors has a curing system that includes a prepolymer and a curing agent. The prepolymer and the curing agent are combined to form a pourable polymeric binder that cures into an amorphous solid. The pourable centerport inhibitor also includes an opaque agent. The pourable centerport inhibitor may also include a plasticizer. The plasticizer, the prepolymer, and the curing agent are preferably the same type that is in the solid propellant with which it will be used in conjunction.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: June 7, 2011
    Assignee: Alliant Techsystems Inc.
    Inventors: Matthew S. Scott, Carl Shanholtz, David Shields, Dayne Lancaster
  • Patent number: 7921777
    Abstract: The present invention relates to a method and an arrangement for the production of radially perforated, cylindrical propellant tubes (1, 23, 31). The invention is based on the underlying idea that the respective propellant tube (1, 23, 31) must be fixed and centred between its own open ends and thereafter to be perforated in stages in a large number of consecutive perforation operations by means of one or more pins (13) capable of displacement in a pin die (10) relative to the propellant tube towards and at least through the major proportion of the cylindrical wall of the propellant tube. Also included in the invention is the requirement for the displacement, between each perforation operation, of the propellant tube and the pin die (10) used for the preparation operation in such a way relative to one another that the propellant tube, after a complete perforation operation, shall be covered in its entirely by perforations (32, 33, 35, 36), which lie at a predetermined e-dimension distance from one another.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: April 12, 2011
    Assignee: Eurenco Bofors AB
    Inventor: Johan Dahlberg
  • Publication number: 20110057338
    Abstract: The present invention relates to a semi-continuous method for obtaining a composite explosive charge comprising a solid polyurethane matrix loaded with a charge, the charge being in powder form and comprising at least one nitro-organic explosive.
    Type: Application
    Filed: November 17, 2006
    Publication date: March 10, 2011
    Applicant: EURENCO FRANCE
    Inventor: Bernard Mahe
  • Publication number: 20110041969
    Abstract: The present invention provides pyrotechnic gas generator compounds and a method of obtaining them. Said compounds have a composition which comprises: an oxidizing charge which comprises at least one inorganic perchlorate and which does not comprise a chlorine scavenger; and a crosslinked, oxygen-containing hydrocarbon binder obtained by crosslinking an elastomer in the presence of at least one crosslinking agent and at least one oxygen-containing plasticizer for said elastomer; said elastomer having a molecular weight of more than 200 000 and being preferably selected from polyesters and polyacrylates; said at least one oxygen-containing plasticizer being composed of a plasticizer of which the molecular weight is greater than 350 g/mol and the oxygen balance equal to or greater than ?230 %, of a mixture of such plasticizers with one another or of a mixture of at least one such plasticizer with at least one other oxygen-containing plasticizer. Said compounds can be obtained continuously by extrusion.
    Type: Application
    Filed: April 30, 2008
    Publication date: February 24, 2011
    Applicant: SNPE MATERIAUX ENERGETIQUES
    Inventors: Frederic Marlin, Bernard Thibieroz
  • Publication number: 20110006448
    Abstract: A solvent-free process is used to make mouldable plastic explosives or mouldable plastic explosive simulant products.
    Type: Application
    Filed: July 11, 2009
    Publication date: January 13, 2011
    Inventors: Albert Wartman, Bruce Barak Koffler
  • Publication number: 20100288404
    Abstract: A highly-filled paste, and a method and device of de-aerating and injecting the paste, the paste including: (a) a solid filler; (b) an organic binder, and (c) a residual gas, wherein the paste contains at least 80 volume-% of the solid filler and has a viscosity exceeding 100 kilopascal·seconds, wherein the filler, binder, and residual gas are intimately mixed so as to form a substantially homogeneous paste, and wherein a composition of the solid filler, binder, and residual gas is selected such that the homogeneous paste has: an average density greater than 98.5% of a Theoretical Maximum Density (TMD).
    Type: Application
    Filed: February 23, 2010
    Publication date: November 18, 2010
    Applicant: RAFAEL ADVANCED DEFENSE SYSTEMS LTD.
    Inventors: Tamar Kaully, Dganit Shacham, Haim Baniste, David Tidhar, Corrine Nadav
  • Patent number: 7824511
    Abstract: A method for making high energy compositions, such as propellants, explosives, pyrotechnics or the like, including a solid metal particulate fuel dispersed in a cured binder matrix. The compositions are formed with ingredients including a particulate metal fuel such as boron, binder polymer (such as GAP polyol), binder plasticizer, and a curing agent containing isocyanate. The improved method includes pre-reacting the particulate metal fuel with an amount of isocyanate, which acts as a curative to neutralize residual acid. The particulate metal fuel/isocyanate from the pre-curing step is mixed together with the binder polymer, binder plasticizer, and remaining curing agent to form the solid propellant. The initial neutralization of the metal fuel avoids gassing and improves the mechanical properties of the propellant yield.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: November 2, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: James J. Baker, Tina Woodland
  • Patent number: 7789984
    Abstract: A method for supplying a pyrotechnic material slurry to a container, includes, taking out a pyrotechnic material slurry, stored inside a storage container, from the bottom portion of the storage container or a vicinity thereof, sealing the exposed surface of the pyrotechnic material slurry with a sealing material, and maintaining the sealed state of the pyrotechnic material slurry in the process of supplying the pyrotechnic material slurry to the container.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: September 7, 2010
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Shingo Oda, Hiroyuki Fujii
  • Publication number: 20100207287
    Abstract: With the invention, a method and a device for explosive forming of work pieces, in which at least one work piece is arranged in at least one die and there deformed by means of an explosive to be ignited, is to be improved, in that an ignition mechanism that is technically easy to handle is produced with the shortest possible setup times, which permits the most precise possible ignition of the explosive with time-repeatable accuracy. This task is solved by a method and device, in which at least one work piece is arranged in at least one die and deformed there by means of an explosive being ignited, in which the explosive is ignited by means of at least one energy beam.
    Type: Application
    Filed: May 8, 2007
    Publication date: August 19, 2010
    Inventors: Alexander Zak, Andreas Stranz
  • Publication number: 20100051149
    Abstract: The present invention provides pyrotechnic grains of composition comprising at least one oxidizing charge and at least one reducing charge and no binder. In characteristic manner, said grains are in the form of substantially cylindrical blocks: with a thickness of more than 5 mm; with an equivalent diameter of 10 mm or more; and with porosity in the range 1% to 8%, limits included. Said grains, advantageously based on guanidine nitrate and basic copper nitrate, are suitable for the slow, low-pressure generation of gas over an extended period.
    Type: Application
    Filed: April 3, 2007
    Publication date: March 4, 2010
    Applicant: SNPE MATERIAUX ENERGETIQUES
    Inventors: Hélène Blanchard, Vincent Bodart, Hugues Rocton
  • Publication number: 20100037793
    Abstract: The velocity of detonation of an explosive such as detonating cord (18, 22) is controlled by the addition of a diluent to the explosive, e.g., to the core of the detonating cord (18, 22). An explosively inert diluent, or a diluent comprised of an explosive of lower brisance than the principal explosive comprising the core of the detonating cord, will serve to reduce the velocity of detonation. Such reduced velocity of detonation has beneficial effects in certain operations, including cleaving rock (10), wherein it is observed to significantly reduce radial cracks (24) and stickers (26) (long radial cracks) in the vicinity of the boreholes (12) in which the low-velocity detonating cord (18, 22) is functioned to cleave the rock (10). The low-velocity detonating cord also facilitates leaving behind a smoother face in cutting trenches and tunnels through rock.
    Type: Application
    Filed: October 26, 2009
    Publication date: February 18, 2010
    Inventors: Robert A. Lee, Mark E. Woodall, Thomas L. Barkley, Dennis P. Johnson, Stanley R. Kelly
  • Publication number: 20100024933
    Abstract: 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.
    Type: Application
    Filed: February 15, 2006
    Publication date: February 4, 2010
    Inventors: Daniel Stec, III, Gartung Cheng, Brian E. Fuchs, Gerard Gillen, Neha Mehta
  • Publication number: 20100024676
    Abstract: A munition is described including a reactive fragment having an energetic material dispersed in a metallic binder material. A method is also described including forming a energetic material; combining the energetic material with a metallic binder material to form a mixture; and shaping the mixture to form a reactive fragment. The munition may be in the form of a warhead, and the reactive fragment may be contained within a casing of the warhead.
    Type: Application
    Filed: June 6, 2006
    Publication date: February 4, 2010
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: George D. Hugus, Edward W. Sheridan, George W. Brooks
  • Publication number: 20100018429
    Abstract: To increase the function and safety of a weapon, it is proposed that the molded part, as connecting site particularly between a projectile and a preferably combustible sleeve containing a driving mechanism, be constructed in such a way that, in a predefined region, said molded part has a felt with an energetic material and/or an inert material.
    Type: Application
    Filed: December 7, 2007
    Publication date: January 28, 2010
    Applicant: NITROCHEMIE ASCHAU GMBH
    Inventor: Walter Lebacher
  • Publication number: 20090320976
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce yellow smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Application
    Filed: December 12, 2008
    Publication date: December 31, 2009
    Inventors: CHRISTINA M. YAMAMOTO, Robert G. Shortridge
  • Publication number: 20090320977
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce red smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Application
    Filed: December 12, 2008
    Publication date: December 31, 2009
    Inventors: ROBERT G. SHORTRIDGE, CHRISTINA M. YAMAMOTO
  • Publication number: 20090178741
    Abstract: Novel reactive composite materials and associated methods for making the same which are pertinent to numerous new or improved applications. The method for making the reactive composite materials utilizes mechanical deformation to manufacture such materials with controlled, predictable characteristics. In the first deformation step, an assembly of reactive layers and/or particles is plastically deformed to reduce its cross sectional area by one-half or more. Portions of the deformed sheets are stacked or bent into a new assembly, and the new assembly is then deformed. The steps of assembly and deformation are repeated a sufficient number of times that the resulting materials are only locally layered but have relatively uniform reaction velocity and heat generating characteristics predictable by stochastic models derived herein.
    Type: Application
    Filed: January 12, 2009
    Publication date: July 16, 2009
    Applicant: Reactive Nanotechnologies, Inc.
    Inventors: Yuwei Xun, David Lunking, Etienne Besnoin, David Van Heerden, Timothy P. Weihs, Omar M. Knio
  • Publication number: 20090120545
    Abstract: The invention provides an infra-red decoy flare comprising a pyrotechnic composition which comprises an extrudable and energetic binder in an amount in the range of from 4-35 wt %, which binder comprises a nitrocellulose, an oxidator in an amount in the range of from 40-80 wt %, a pyrotechnic fuel in an amount in the range of from 15-35 wt %, and a carbon source in an amount of up to and including 10 wt %, all amounts based on total pyrotechnic composition. The invention further provides a process for preparing said infra-red decoy flare.
    Type: Application
    Filed: June 7, 2006
    Publication date: May 14, 2009
    Applicant: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETEN-SCHAPPELIJK ONDERZOEK TNO
    Inventors: Rutger Webb, Murk Pieter Van Rooijen
  • Publication number: 20090101251
    Abstract: A shaped, flexible fuel and energetic system is presented. The shaped, flexible fuel comprises at least one polymeric binding material and porous silicon particles dispersed throughout the polymeric binding material. The porous silicon particles are prepared from a metallurgical grade silicon powder. The shaped, flexible fuel preferably includes shapes such as: an article, a film, a wire and a tape. The energetic system comprises the shaped, flexible fuel portion used alone or in combination with at least one oxidizer.
    Type: Application
    Filed: May 8, 2008
    Publication date: April 23, 2009
    Applicant: VESTA RESEARCH, LTD.
    Inventors: Shanthi Subramanian, Declan Farrell, Santosh Y. Limaye
  • Publication number: 20090102080
    Abstract: There is provided a tubular molded article of a gas generating agent consisting of a non-azide-based composition. Both ends of the molded article are squashed. A gas-generating-agent producing process is to obtain a gas generating agent which is molded into the form of a tube both ends of which are squashed in such a way that the tubular molded article of the gas generating agent being in a wetted state is passed through a gap between a pair of molding gears that are rotatable so that each convex tooth of one of the molding gears can face that of the other molding gear, thereafter the molded article is squashed with the convex teeth at predetermined intervals, thereafter the molded article is cut off at the squashed concave parts in such a way as to be folded, and the resultant cut pieces are dried.
    Type: Application
    Filed: December 17, 2008
    Publication date: April 23, 2009
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tameo KAWAKAMI, Eishi Sato, Koji Wakisaka, Kazuhisa Tamura
  • Publication number: 20080134924
    Abstract: A thruster stack assembly and method for manufacturing the same is provided. The thruster stack assembly includes a plurality of grain elements having a common core region (e.g., a channel or passageway), where each grain element comprises a volume of electrically ignitable propellant. The thruster stack assembly further includes electrodes associated with the plurality of grain elements, the electrodes adapted for selectively igniting the plurality of grain elements. In one example, one or more of the grain elements may be ignited and combusted without igniting or damaging adjacent grain elements of the stack. The core region serves to channel combustion gases and exhaust from the thruster stack. Multiple stacks may be assembled together to form three-dimensional thruster arrays.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 12, 2008
    Inventor: Wayne N. Sawka
  • Patent number: 6997996
    Abstract: A high energy propellant, comprising an oxetane thermoplastic elastomer energetic binder admixed with a high energy explosive filler. The oxetane thermoplastic elastomer energetic binder preferably comprises from about five percent to about thirty percent by weight and the high energy explosive filler comprises from about seventy percent to about ninety-five percent by weight of the composition. A preferred propellant further includes an explosive plasticizer, preferably in an amount of about four percent to about seven percent of the plasticizer by weight of the propellant. The preferred filler is selected from the group consisting of CL-20, TNAZ, RDX and mixtures thereof. The preferred plasticizer is selected from the group consisting of TNAZ, BTTN, TMETN, TEGDN, BDNPA/F, methyl NENA, ethyl NENA and mixtures thereof.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: February 14, 2006
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thelma G. Manning, Joseph L. Prezelski, Sam Moy, Bernard Strauss, James A. Hartwell, Arpad Juhasz
  • Patent number: 6789485
    Abstract: Assembly of a gas generator 10 includes the step of adding uncured silicone to a propellant cup 25. Granulated oxidizer is then added over the top of the silicone and allowed to disperse therein. Afterwards, the silicone is cured to provide flush communication with an inner wall 14 of the propellant cup 25. Other granulated gas generant constituents may be added as well. A gas generator 10 assembled in this manner provides more predictable burn rates of a gas generant composition 26 and therefore more predictable performance of the gas generator 10.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: September 14, 2004
    Assignee: Automotive Systems Laboratory, Inc.
    Inventors: Larry A. Moquin, Bruce A. Stevens, Steven M. Dunham, Jeffery S. Blackburn, Sean P. Burns, Graylon K. Williams
  • Publication number: 20040173922
    Abstract: A method for preparing pyrotechnics oxidized by basic metal nitrate is provided wherein basic metal nitrate is formed in an aqueous slurry to which is added at least one additional pyrotechnic ingredient including at least one fuel material to form a pyrotechnic mixture. The so-formed pyrotechnic mixture is then dried to form a pyrotechnic powder and such may, if desired, be appropriately formed or shaped to assist or facilitate use in inflator devices such as used in vehicle occupant safety restraint systems.
    Type: Application
    Filed: March 4, 2003
    Publication date: September 9, 2004
    Inventors: Michael W. Barnes, Robert G. Smith