The invention relates to suspensions of hexanitrohexaazaisowurtzitane crystals in a liquid phase (whereby the liquid phase comprises at least 85 wt.-% of a non-solvent of hexanitrohexaazaisowurtzitane, said non-solvent consisting of at last one non-flammable hydrofluoroether, and contains between 0 and less than 15 wt.-% of an organic solvent of hexanitrohexaazaisowurtzitane which is more volatile than the non-sovent and selected from the group containing esters, nitriles, ketones and mixtures thereof). The invention also relates to the production of said suspensions and to the use thereof for the production of pyrotechnic objects. The use of at least one hydrofluoroether as a non-solvent is particularly suitable.
C06B 21/00 - Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
C06B 25/34 - Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
C07D 487/22 - Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups in which the condensed system contains four or more hetero rings
The invention relates to a gas-generating pyrotechnic compound containing guanidine nitrate, basic copper nitrate, and potassium perchlorate. Characteristically, said potassium perchlorate represents between 8 and 20 % of the total mass of said pyrotechnic compound and said composition also contains at least one oxide selected from the metal oxides, the metalloid oxides and the mixtures thereof, the at least one oxide having a melting temperature lower than the combustion temperature of said pyrotechnic compound and said at least one oxide representing between 1% and 5% of the total mass of said pyrotechnic compound. Said at least one oxide improves the low-pressure combustion of said pyrotechnic compound.
The present invention mainly relates to a method for producing a solid composite propellant (with a polyurethane binder filled with ammonium perchlorate and aluminum). Typically, the ammonium perchlorate charge of the propellant is obtained from at least two charges each having a specific single mode particle size distribution. It is thus possible to reduce the thrust oscillations and the alumina deposits at the rear bottom of the engine. The invention also relates to a solid composite propellant, to solid propellant charges, and to related rocket engines.
C06B 33/06 - Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being an inorganic oxygen-halogen salt
C06B 45/02 - Compositions or products which are defined by structure or arrangement of component or product comprising particles of diverse size or shape
C06B 45/10 - Compositions or products which are defined by structure or arrangement of component or product comprising solid particles dispersed in solid solution or matrix the solid solution or matrix containing an organic component the organic component containing a resin
The invention relates to a pyrotechnic gas generator (10) for a motor vehicle safety airbag (12), comprising a pyrotechnic charge and a pyrotechnic initiator (28) which is situated in a combustion chamber (14) and able to be actuated by a first detection system (30) intended to detect an imminent collision state and/or by a second detection system (32) intended to detect an authenticated collision state. The pyrotechnic gas generator according to the invention further comprises a passage (16, 18) along which gases can flow between the said combustion chamber (14) and the said airbag (12), and at least one valve (34) that can be moved from a first position in which it defines a first bore section into a second position in which it defines a second bore section greater than the said first bore section, or vice versa. In particular, the valve (34) is designed to define the larger bore section when the pyrotechnic initiator (28) is actuated by the first detection system (30).
B60R 21/0134 - Electrical circuits for triggering safety arrangements in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle
B60R 21/0136 - Electrical circuits for triggering safety arrangements in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle
B60R 21/264 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
B60R 21/26 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
B60R 21/263 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output
5.
COMPOSITE COMPOSITION FOR SOLID PROPELLANTS INCLUDING A FERROCENE DERIVATIVE AND A SUBMICRONIC ALUMINUM CHARGE, SOLID PROPELLANT, AND LOAD
The present invention relates to composite compositions for solid propellants including an oxidizing charge, a liquid polyol polymer, a combustion catalyst consisting of a ferrocene derivative, and an aluminum charge. Said aluminum charge is characteristically submicronic, or even nanometric. The present invention also relates to pasty or solid propellant, and to the corresponding solid propellant loads.
C06B 23/00 - Compositions characterised by non-explosive or non-thermic constituents
C06B 33/06 - Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being an inorganic oxygen-halogen salt
C06B 45/10 - Compositions or products which are defined by structure or arrangement of component or product comprising solid particles dispersed in solid solution or matrix the solid solution or matrix containing an organic component the organic component containing a resin
6.
TRIGGERED-STROKE ACTUATOR FOR A SAFETY DEVICE INCORPORATED INTO A MOTOR VEHICLE TO PROTECT A PEDESTRIAN IN THE EVENT OF A FRONTAL IMPACT
Actuator with triggered stroke and damped return travel. According to the invention, the actuator houses a piston (15) a gas generator (19) including a rapid-burning pyrotechnic charge and also houses a pyrotechnic charge (38) that burns more slowly that that of the said gas generator (19).
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