Abstract: The setback force of a gun launch environment is used to help arm a projele fuze by shearing a pin which holds a slidable nozzle in a non-operative position. The sheared pin permits the nozzle to move into an operative position adjacent to a heat producing resonance tube. A second arming function is performed when the velocity of the launched projectile causes air to push a spring biased out-of-line detonator into alignment with the heat producing resonance tube. Ram air which is forced into the resonance tube by the high speed of the projectile creates shock waves which generate heat which ignite the detonator.

Abstract: 1.

Abstract: An inertial-type all-way fuze for explosive projectiles comprises: a cup-ped housing having an axial bore at its forward end and a detonator mounted in a spin-armed slide movable into alignment with the bore; a firing member having a shaft slidable in the bore, a firing pin adapted to initiate the detonator and an intermediate radial actuating flange; and an annular inertial actuator member having a rearwardly-facing internal, conical surface at its rear end engaging the forward edge of the flange, in the armed condition of the fuze, and an external annular surface at its forward end adjacent to an internal cylindrical surface on the housing, whereby, on graze impact with a target at substantially any angle, the actuator member pivots about a fulcrum formed by the two annular surfaces, and the conical surface cams the flange rearwardly to initiate the detonator. The firing member shaft extends forwardly beyond the housing for direct impact actuation of the fuze.

Abstract: Unsymmetrical TNT isomers are removed from solid or molten crude TNT by treatment with aqueous ammonium sulfite. The yield of purified TNT is significantly greater by treatment with aqueous ammonium sulfite than with conventional sodium sulfite ("sellite") at acceptable levels of isomer removal. By use of ammonium bisulfite together with ammonium sulfite or operation in a closed system to avoid loss of ammonia, high yields of TNT with essentially complete removal of TNT isomers can be obtained at low sulfite levels.

Abstract: A projectile having a first plurality of flechettes arranged to be disper during the flight of the projectile by an explosive removal of a surrounding portion of the projectile casing and a second plurality of flechettes adapted to be subsequently dispersed by a movement thereof forwardly through a rear portion of the casing of the projectile and subsequent lateral displacement therefrom.

Abstract: Hexahydro-1,3,5-trialkanoyl-s-triazines are produced by reacting a polymeric formaldehyde and an alkanoic acid amide in the presence of sulfuric acid catalyst and a liquid organic solvent or diluent while removing the water formed in the reaction by distillation, the amount of sulfuric acid catalyst employed being at least 0.05 mol per mol of said amide.

Abstract: Double-based propellant combustion catalysts such as lead stannate-tolylene iisocyanate(reduced) are extremely effective in lowering the temperature dependency of burning rate with pressure of smokeless propellants irrespective of their crossed or uncrossed linkages.

Abstract: Double-based propellant combustion catalysts such as lead stannatetolylene iisocyanate(reduced) are extremely effective in lowering the temperature dependency of burning rate with pressure of smokeless propellants irrespective of their crossed or uncrossed linkages.

Abstract: 2,4- AND 2,6-Dinitrotoluenes mixed with small amounts of isomeric dinitrouene impurities are extracted with an alkane of 5 to 8 carbon atoms, whereby the isomeric dinitrotoluene impurities are removed.

Abstract: A fluidic G sensor for monitoring the acceleration or deceleration of a mile includes a hollow cylinder containing an inertial mass, e.g., a piston, which is supported by a diaphragm pressurized by gas. The gas pressure is supplied from an external source and is metered into the diaphragm chamber through a fixed orifice. Gas is discharged from the chamber through two vent orifices, one fixed and the other variable. The fixed vent orifice represents the output load and leads to a fluidic Schmitt Trigger. The variable vent orifice is modulated by diaphragm motion and serves to control the pressure under the diaphragm as a function of acceleration of the piston. A dashpot formed between the piston and the upper closed end of the cylinder, which contains a small orifice open to ambient pressure, is employed to damp the oscillation of the piston and thereby stabilize the output pressure.

Abstract: Copying method comprises applying uniformly an auxiliarly heating treatment o the whole surface of a thermally developable photosensitive material containing organic salt at a temperature within a developing temperature range appropriate to the photosensitive material before image exposure, and heating for developing after exposure.

Abstract: Use of convolutely wound paper-metal foil laminate cases for pyrotechnic re compositions comprising a metallic fuel and a solid inorganic oxidizer reduces "chimney" and flickering effects and increases the luminous efficiency of the flare, as compared with the use of conventional convolutely wound paper cases.

Abstract: Silver azide crystals of relatively high bulk density and possessing good flowing and initiating properties are obtained by crystallization from aqueous ammonia solution obtainable by double decomposition of silver nitrate and sodium azide in aqueous ammonia solution. The crystallization is accomplished by distilling the ammonia from the solution until the silver azide begins to crystallize, then adding a small amount of acetic acid to induce formation of crystalline nuclei of silver azide, and continuing the distillation of the ammonia until the silver azide is completely precipitated. The silver azide precipitate thus obtained, when isolated, washed and dried, yields a free-flowing granular product of relatively high bulk density and consisting predominantly of cubical crystals.

Abstract: This invention comprehends an improved flechette structure having means for urning back split forward portions thereof upon the striking of the target thereby to increase the wound capabilities of the flechette. The flechette structure includes a one-piece member defining both the penetrating nose portion and flight stabilizing fin portion of the flechette. The nose portion is split and a wedge element is disposed therein for effecting the turning back of the nose portion as a result of the striking of the target. The wedging element may further define at least a portion of the penetrating nose of the flechette.

Abstract: Novel compounds are provided having the formula ##SPC1##Wherein R is hydrogen or lower n-alkyl and the ether oxygen atoms are attached in the 1,3 or 1,4 positions to the R substituted benzene rings, R being in the 2 or 5 positions when the ether oxygen atoms are in the 1,3 positions and R is lower n-alkyl.These compounds are useful as explosives characterized by good thermal stability.

Abstract: A system for delivering venturi aspirated dry powder at a predetermined rate in which one end of an exhaust tube is embedded in a vessel of dry powder and a pressure gas inlet tube has a return bend portion smaller than and extending into the embedded exhaust tube end. A miniature flow regulator is employed to normally deliver controlled pressure gas to the aspirator inlet, wherein delivered gas pressure increases as the gas pressure supply decreases. The regulator has a gas source passage containing a normally slightly opened valve whose stem is held in such slightly open valve position by an adjustably biased piston which allows the valve to close when a predetermined amount of pressure gas has built up on the regulator outlet side of the valve.

Abstract: 1,3,5,7-TETRANITRO-1,3,5,7-TETRAAZACYLOOCTANE IS PREPARED BY NITROLYSIS OF A 1,3,5,7-TETRAACYL-1,3,5,7-TETRAAZACYLOOCTANE OR A 1,5-DIACYL-3,7-DINITRO11,3,5,7-TETRAAZACYCLOOCATNE WITH NITROGEN PENTOXIDE.

Abstract: A keying system for interlocking the components of a beehive type project by set back force generated by firing of the projectile. Tubular spacing members having smooth rims are engraved by a pre-engraved plate upon the set back force to prevent rotation of the components and the pay load during trajectory of the projectile.

Abstract: Black powder pills of excellent ignition properties are obtained by a simfied process, wherein an aqueous solution of KNO.sub.3 is introduced into an alcoholic medium, such as ethanol, in the presence of finely divided particles of sulfur and wood charcoal and/or carbon black and a small amount of a polyvinyl pyrrolidone, whereby the KNO.sub.3 is precipitated in finely divided form in intimate mixture with the particles of sulfur and carbon. The resulting particulate mixture contains an extremely thin surface film of adsorbed polyvinyl pyrrolidone, and is separated from the liquid and dried. The modified black powder thus obtained can be safely handled in the dry state and compressed into pills possessing ignition properties equivalent to standard black powder granules. The novel process provides excellent particle size control and reproducibility and eliminates time consuming, hazardous steps and special apparatus used in the conventional commercial black powder process.

Abstract: RDX is produced by reacting formaldehyde and an alkyl nitrile RCN, wherein is an alkyl group of 1 to 3 carbon atoms, in the absence of added solvents, to form a 1,3,5-triacylhexahydro-s-triazine and subjecting the latter, without separation thereof from the reaction mixture, to nitrolysis by contact with concentrated nitric acid to form RDX.