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公开(公告)号：US10654762B2
公开(公告)日：2020-05-19
申请号：US16125871
申请日：2018-09-10
申请人： Raytheon Company
摘要： A combustible element includes regions of fuel material interspersed with regions of oxidizer material. The element may be made by additive manufacturing processes, such as three-dimensional printing, with the fuel material regions and the oxidizer material regions placed in appropriate locations in layer of the combustible element. For example, different extruders may be used to extrude and deposit portions of a fuel filament and an oxidizer filament at different locations in each layer of the combustible element. The combustible element may define a combustion chamber within the element, where combustion occurs when the combustible element is ignited. The fuel material and the oxidizer material may be selected, and their relative amounts may be controlled, such that desired relative amounts of fuel and oxidizer are present for combustion with desired characteristics, such as combustion rate.
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公开(公告)号：US20190322603A1
公开(公告)日：2019-10-24
申请号：US16389091
申请日：2019-04-19
摘要： Disclosed herein are electrically operated propellants and methods of making and use thereof. The electrically operated propellants comprise a thermoplastic ionomer and a carbonaceous material. The electrically operated propellants are air stable and are configured to ignite at an ignition condition, wherein the ignition condition is that a physical defect is introduced and an electrical input is applied after the introduction of the physical defect, to thereby ignite the electrically operated propellant.
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公开(公告)号：US10266458B2
公开(公告)日：2019-04-23
申请号：US14681138
申请日：2015-04-08
发明人： Scott Dawley
摘要： A propellant includes a binder system that has a polybutadiene component, a polytetrahydrofuran component, and an anti-oxidant component. In an example, the propellant includes a solid oxidizer, a solid fuel, and a binder system that holds the solid oxidizer and the solid fuel together. The binder system includes a polybutadiene component, a hydrocarbon diluent component of a higher level of saturation than the polybutadiene component, and an anti-oxidant component.
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公开(公告)号：US20190100474A1
公开(公告)日：2019-04-04
申请号：US16087490
申请日：2017-03-22
摘要： The invention is directed to a propellant charge, to a method of preparing a propellant charge, and to uses of the propellant charge. The propellant charge or grain of the invention comprises two or more energetic materials with different linear burn rate, wherein the two or more energetic materials are distributed within the charge or grain such that two perpendicular cross-sections of said propellant charge or grain have at least two linear burn rate gradients in non-parallel directions, wherein said propellant charge or grain is layered with layers having a layer thickness in the range of 1-10 000 μm, wherein, if the propellant charge or grain has a longitudinal axis, at least one of said perpendicular cross-sections is along said longitudinal axis, and wherein said propellant charge or grain further comprises one or more perforations.
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公开(公告)号：US10196324B2
公开(公告)日：2019-02-05
申请号：US14563348
申请日：2014-12-08
申请人： Raytheon Company
发明人： Thomas M. Deppert , David R. Smith
摘要： Disclosed herein are energetic compositions and methods of making thereof. A composition includes perchlorate or nitrate containing oxidizer particles, a polymeric binder, and a borylated ferrocene derivative bonding agent bonded to a surface of at least a portion the perchlorate or nitrate containing oxidizer particles to form a Lewis complex.
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6.发明授权公开(公告)号：US10132148B2
公开(公告)日：2018-11-20
申请号：US14491246
申请日：2014-09-19
申请人： Orbital ATK, Inc.
IPC分类号： E21B43/26 , E21B43/263 , C06B45/00 , F42B1/00 , F42B1/04 , E21B33/124 , E21B43/247 , C06B45/10
摘要： Downhole stimulation tools include a housing and at least one propellant structure within the housing comprising at least one propellant grain of a formulation, at least another propellant grain of a formulation different from the formulation of the at least one propellant grain longitudinally adjacent the at least one propellant grain, and at least one initiation element proximate at least one of the propellant grains. At least one pressure containment structure is secured to the housing and comprises a seal element expandable in response to gas pressure generated by combustion of a propellant grain of the at least one propellant structure. Related methods are also disclosed.
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公开(公告)号：US20180305270A1
公开(公告)日：2018-10-25
申请号：US15767547
申请日：2016-10-12
发明人： Kenneth Lewtas , Daniel Jubb , Mark Price
IPC分类号： C06B45/10
CPC分类号： C06B45/10
摘要： Energetic materials comprising active components, a polymer binder matrix and a tackifying resin are useful as propellants, fuels, pyrotechnic materials and explosives; the tackifying resin improves the adhesion and dispersion of the active components throughout the binder resin.
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公开(公告)号：US10053395B1
公开(公告)日：2018-08-21
申请号：US15080932
申请日：2016-03-25
发明人： Joseph A Domanico
CPC分类号： C06D3/00
摘要： A non-energetic smoke fill composition including a resin, a curing agent, a metallic filler, and a non-metallic filler, wherein the smoke fill composition is configured to be inserted into any of an artillery shell, a mortar cartridge, a gun cartridge, and in general an ogive of a projectile, and wherein the smoke fill composition is configured to be disseminated by a fuze and a supplemental charge to produce a signal visible in both day or night conditions.
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9.发明授权公开(公告)号：US10040731B2
公开(公告)日：2018-08-07
申请号：US15522650
申请日：2015-10-27
摘要： A composite pyrotechnic product containing energetic charges in a plasticized binder includes a cured energetic polymer and at least one energetic plasticizer, wherein: the cured energetic polymer consists of a glycidyl azide polymer (GAP) having a number average molecular weight (Mn) lying in the range 700 g/mol to 3000 g/mol and cured via its hydroxyl terminal functions with at least one curing agent of polyisocyanate type; and the energetic charges present at a content in the range 50% to 70% by weight consisting, for at least 95% of their weight, of large crystals of ammonium dinitramide (ADN) and of small crystals of hexogen (RDX): the large crystals of ammonium dinitramide (ADN) being present at a content in the range 8% to 65% by weight; and the small crystals of hexogen (RDX) being present at a content in the range 5% to 55% by weight.
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公开(公告)号：US09759162B1
公开(公告)日：2017-09-12
申请号：US10200597
申请日：2002-07-23
CPC分类号： F02K9/95 , C06B25/34 , C06B29/22 , C06B45/10 , C06B45/12 , C06C9/00 , F02K9/08 , F02K9/12 , F02K9/14 , F02K9/28
摘要： Solid propellant systems include a main propellant and a secondary propellant in contact with the first propellant that exhibits autoignition temperatures of at least about 100° F. lower than the autoignition temperature of the main propellant. The secondary propellant of the present invention is most advantageously employed with conventional AP-containing solid propellant formulations as the main propellant, especially formulations containing both AP, an energetic solid, and a binder. In especially preferred forms, the secondary propellant will include a nitramine which is at least one selected from nitroguanidine (NQ), cyclotrimethylene trinitramine (RDX) and cyclotetramethylenetetranitramine (HMX), and a binder which is at least one selected from HTPB, HTPE or glycidyl azide polymer (GAP). Most preferably, the secondary propellant will include a combination of nitramines which includes NQ and one of RDX or HMX.
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