Abstract: A slurry explosive composition comprising at least one inorganic oxidizing salt, an aqueous liquid phase, fuel material and a sensitizing agent which agent comprises a combination of hydrophobic particles of high explosive material and gas bubbles.
Abstract: At least one combustion modifier is incorporated in liquid propellants by ssolving the modifier in at least one solvent such as alkoxypolyethylene glycol ether or a bis(alkoxypolyethylene glycol) formal to form a solution and mixing the resulting solution with the energetic component of the liquid propellant. Similar solutions of combustion modifier are also suitable for use as casting liquids in cast double-base propellants.
Type:
Grant
Filed:
March 14, 1975
Date of Patent:
July 29, 1980
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
Albert T. Camp, Kurt F. Mueller, George W. Nauflett
Abstract: An improved explosive composition is disclosed and comprises a major portion of an explosive having a detonation velocity between about 1500 and 10,000 meters per second and a minor amount of a donor additive comprising an organic compound or mixture of organic compounds capable of releasing low molecular weight free radicals or ions under mechanical or electrical shock conditions and which is not an explosive, or an inorganic compound or mixture of inorganic compounds capable of releasing low molecular weight free radicals or ions under mechanical or electrical shock conditions and selected from ammonium or alkali metal persulfates.
Abstract: An improved explosive composition is disclosed and comprises a major portion of an explosive having a detonation velocity between about 1500 and 10,000 meters per second and a minor amount of a getter additive comprising a compound or mixture of compounds capable of capturing or deactivating free radicals or ions under mechanical or electrical shock conditions and which is not an explosive. Exemplary getter additives are isocyanates, olefins and iodine.
Abstract: A cap-sensitive slurry explosive capable of propagating a high order detonation in thin layers and which has a high degree of safety for a cap-sensitive explosive. The slurry consists of a super-fine grained explosive, suspended in an energetic, but non-self-explosive liquid matrix and contains no liquid explosive ingredient. The slurry resists dispersion in a variety of liquids including water and crude oil. In the preferred embodiments the slurries include penetaerythritol tetranitrate (PETN) in super fine particles, having an average particle size of about 6.5 microns.
Abstract: Tris(difluoramino)methoxypentaerythrityl nitrates and perfluoroguanidine adducts of pentaerythrityl nitrates, useful as propellant ingredients, are disclosed.
Type:
Grant
Filed:
March 28, 1966
Date of Patent:
October 3, 1978
Assignee:
Exxon Research & Engineering Co.
Inventors:
Melvin Goldstein, William E. Tyler, III
Abstract: Nitramine propellants absent a pressure exponent shift in the burning rate curves are prepared by matching the burning rate of a selected nitramine or combination of nitramines within 10% of burning rate of a plasticized active binder so as to smooth out the break point appearance in the burning rate curve.
Type:
Grant
Filed:
May 16, 1977
Date of Patent:
May 30, 1978
Inventors:
Alan M. Acting Administrator of the National Aeronautics and Space Administration, with respect to an invention of Lovelace, Norman S. Cohen, Leon D. Strand
Abstract: The specification describes heat-stable pressure-moulded composite explosives which comprise at least one crystalline explosive having a high rate of detonation and, as a synthetic binder therefor, a cross-linked silicone resin. These composite explosives are produced by coating the crystalline explosive in the presence of water with a thermosetting polysiloxane prepolymer, then drying and cross-linking the moulding powder obtained, and finally cold-compressing the cross-linked moulding powder to form a shaped composite explosive.These explosives have exceptional mechanical strength at elevated temperatures which enables them to be used in all types of explosive charge. The process used provides increased safety and results in a lower cost price.
Type:
Grant
Filed:
July 19, 1976
Date of Patent:
May 9, 1978
Assignee:
Societe Nationale des Poudres et Explosifs
Abstract: An article of manufacture and a method of producing same is disclosed, wherein the article is a solid explosive composition comprised of a major portion of particulate explosive material bound together by a minor portion of a cured anaerobic binding material.
Abstract: Explosive compositions utilizing binders which are soluble in water or wh hydrolyze under dilute acidic or basic conditions to yield non-toxic products are disclosed. The use of such binders permits one to readily remove the compositions from obsolete warheads or the like. The explosive filler can be reclaimed.
Type:
Grant
Filed:
April 20, 1976
Date of Patent:
April 19, 1977
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Flexible, self-supporting explosive compositions composed essentially ently of a particulate high explosive RDX, HMX and/or PETN and a high viscosity nitrocellulose binder plasticized with triethyleneglycol dinitrate.
Type:
Grant
Filed:
October 28, 1975
Date of Patent:
March 29, 1977
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: Flexible, self-supporting explosive compositions composed essentially ently of a particulate high explosive RDX, HMX and/or PETN and a nitrostarch binder plasticized with trimethylolethane trinitrate and/or triethyleneglycol dinitrate.
Type:
Grant
Filed:
October 23, 1975
Date of Patent:
March 29, 1977
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: A cap-sensitive slurry explosive capable of propagating a high order detonation in thin layers and which has a high degree of safety for a cap-sensitive explosive. The slurry consists of a superfine grained explosive, suspended in an energetic, but non-self-explosive liquid matrix and contains no liquid explosive ingredient. The slurry resists dispersion in a variety of liquids including water and crude oil. In the preferred embodiments the slurries include penetaerythritol tetranitrate (PETN) in super fine particles, having an average particle size of 6.5 microns.
Type:
Grant
Filed:
October 14, 1975
Date of Patent:
March 15, 1977
Assignee:
Teledyne McCormick Selph, an operating division of Teledyne Industries, Inc.
Abstract: The present invention relates to a primer composition formed of TNT, DNT (2,4-dinitrotoluene) and fine particle size PETN (pentaerythritol tetranitrate) for use with explosive charges. This composition is extruded in melt condition into primer cartridges. Any topping-off operations are eliminated since practically no shrinkage occurs as the melt cools to form a solid casting in the cartridge.
Abstract: An apparatus to allow manufacture of fine particle PETN (penetaerythritol tetranitrate) having a sensitivity to propagate in thin layers in slurry and having a particle size which presents advantages in safety of handling and ability to obtain higher solids loading in slurries and flexible explosive binder systems due to a lower surface area, and a wider particle size distribution, compared to previous PETN of similar sensitivity to propagation in thin layers, i.e., as the major explosive ingredient in flexible sheet explosive formulations, and to propagation as a high velocity detonation in small core loads, i.e., 1 grain/ft., in mild detonating fuse, confined detonating fuse, and the like.
Abstract: 7. A process for preparing a solid propellant composition having a plateau-burning rate comprising the steps ofA. mixing at room temperature the following ingredients until a viscous binder results:Ingredients Percent by weight ______________________________________ High energy plasticizer selected from 15 to 85 the group consisting of pentaerythritol trinitrate, diethylene glycol dinitrate, trimethylolethane trinitrate and mixtures thereof Ingredients Percent by weight ______________________________________ Plastisol nitrocellulose 10 to 50 Ethyl centralite .4 to 5; ______________________________________B. blending into said binder, until a homogeneous pourable mixture result a cured propellant composition which has been milled to an average particle size of about 30 mesh, said composition consisting essentially of the following ingredientsIngredients Percent by weight ______________________________________ Nitrocellulose 13.5 to 27.5 Nitroglycerin 10.5 to 22.5 Additives .
Abstract: This invention relates to self-supporting, water-resistant explosive comptions composed essentially entirely of explosively active ingredients and methods for making same. The compositions consist essentially of a particulate high explosive and a high viscosity nitrocellulose binder plasticized with TMETN (trimethylolethane trinitrate) without the use of other plasticizers.
Type:
Grant
Filed:
March 26, 1974
Date of Patent:
March 9, 1976
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: A method for producing high density and high energy solid propellants conting of a solid inorganic oxidizing salt, a binder and a granular organic explosive comprising, the suspension of said ingredients in an organic solvent with agitation at ambient temperature to form a colloid, extruding the colloid, and raising the temperature to cure the grain, and the mixing of said propellant ingredients under vacuum, raising the temperature until a bulk viscosity of approximately 60,000 to 70,000 centipoises is reached, pouring said ingredients into a mold under vacuum, and curing the grains until the charge solidifies.
Type:
Grant
Filed:
January 11, 1968
Date of Patent:
March 9, 1976
Assignee:
The United States of America as represented by the Secretary of the Army