Abstract: The interior surfaces of gun barrels are protected from wear and corrosion y applying a laminar additive of an organic compound to a gun propellant in such a manner that the heat generated by firing of the gun causes the compound to decompose thereby evolving gaseous products which buffer said interior surfaces from the corrosive and wearing effects of the combustion products of the propellant.

Abstract: A light screen device for measuring the velocity of a projectile comprising laser disposed opposite to one end of a first plane reflecting mirror and inclined with respect thereto to cause a laser beam to strike the first plane reflecting mirror and in turn to reflect the beam to a second plane mirror and successively reflecting the beam back and forth vertically to higher points on each mirror surface forming a criss-cross rectangularly shaped light grid network therebetween. A light detector is disposed axially in line with a reflected beam to intercept and detect the continuing presence thereof and to generate a pulse signal in response to the projectile passing through the light screen to stop a counting circuit.

Abstract: An inspection method and apparatus for the deposition of a liquid material o a part in a manufacturing process. The method utilizes electrical continuity techniques to determine actual application and also controlling the dispensed volume of material.

Abstract: A switch actuator, for safe and arm applications requiring utmost dependaity in order to preclude a premature or false arming sequence, utilizes a plurality of simultaneous input signals from independently coded pneumatic optical and electrical sources to drive a rotary switch. A rotary fluidic valving plate is used to decode non-uniform input optical signals into a uniform cyclical output pressure signal which is used to drive a fail-safe, reversible pneumatic piston type motor. A geneva mechanism is used to mechanically couple the prime mover to an output gear.

Abstract: A spin stabilized projectile containing an annulus of incendiary liquid sounding a burster tube, in which the liquid is compartmentalized to minimize rotational spin loss of the projectile due to centrifugal force effect on or anti-spin inertia by the liquid.

Abstract: A variable burn rate/variable burn time parachute flare, adapted to be trported by a gun cannon or howitzer to a desired height and then ignited to burn at an intensity of 1.6 to 1.8 .times. 10.sup.6 candlepower for 25 to 35 seconds, followed by a second burn at about 0.8 .times. 10.sup.6 candlepower for 75 to 35 seconds and comprising a flare case having a hollow cylindrical wall about 4.5 inches in diameter and about 7 inches long, closed at one-end and open at the other end, and a 0.03 inch coating of polyester or epoxy resin on the closed end and on one-third to two-thirds of the inner wall thereof adjacent to the closed end.

Abstract: A circularly shaped rimmed gasket, having an axially aligned central bore ansversely disposed therethrough, utilizes oppositely disposed annular grooves located in exterior faces of the gasket to form sealing surfaces intermediate two axially positioned raised boss sealing faces of a pipe flange. The projecting sides of the rim of the gasket nestles around each flange boss helping to axially align the pipe flanges with minimum effort and visibility.

Abstract: A thread protector and seal device, suitable for use with automated shell lling equipment utilizes a flanged semi-rigid tubular member having a plurality of longitudinally disposed slots on one end thereof to facilitate insertion into the nose end of an internally threaded projectile. A compliant member is molded into interior and exterior annular grooves of the insertion end of the thread protector to prevent the accumulation of explosive material from entering the threaded fuze area of the projectile during a loading operation.

Abstract: A propellant charge is assembled by stacking together a plurality of extrd longitudinally grooved polygonally shaped high packing density propellant grains. An hexagonal configuration provides for nearly full utilization of the circular volume of a propellant chamber. Selective location of a plurality of perforations and grooves through each grain member is used to provide propellant charge assemblies having uniform web distribution and improved burn characteristics.

Abstract: Spray cleaner formulations useful in the surface treatment of metallic amition components and the like and comprising sodium metasilicate, sodium carbonate, and either sodium hydroxide or ethylenediamine tetraacetic acid, the cleaner formulation being completely devoid of phosphates such that the spent cleaning formulation, when discharged into waterways, will not promote algae growth therein or eutrophication thereof.

Abstract: A plate having a plurality of small openings therein mounted to the exit t of a recoilless weapon for reducing the depth of penetration of the disturbed gas field without significantly effecting the recoil reduction characteristics of the weapon.

Abstract: A low vulnerability booster charge comprising single, fairly large crystals f 1,3,5,7-tetramethylenetetranitramine (HMX) or 1,3,5,-trimethylenetrinitramine (RDX) about 160 microns diameter coated with a polyurethane cement which comprises about 15 weight percent of the entire booster charge.

Abstract: Finely divided, crystalline high explosive compounds and compositions are ovided with a desensitizing coating of wax by mixing the explosive particles with an aqueous dispersion of the wax containing a soluble salt of a higher fatty acid dispersing agent, e.g. sodium stearate, and adding barium chloride or the like to precipitate the dispersing agent as a water-insoluble fatty acid compound and break the dispersion, thereby coating the explosive particles with an intimate mixture of the wax and the insoluble fatty acid compound.

Abstract: The firing circuit comprises a direct current voltage source having negat and positive terminals connected, respectively, to first and second terminals of a firing network. The network comprises first and second resistors connected, respectively, to the first and second network terminals. A diode, a silicon controlled rectifier (SCR), an electrical detonator and a third resistor are connected in series with each other and in parallel with the first and second terminals, respectively, with the anode of the diode connected to the cathode of the SCR, and the gate of the SCR connected to the junction of the first and second resistors. A capacitor and a fourth resistor are connected in parallel with the combination of the SCR and the detonator. In a modification, a Zener diode is connected in parallel with the capacitor.

Abstract: An improved process of generating visible yellow, orange, red light from the visible violet, blue, green light produced by a selected tetraaminoethylene and oxygen reaction wherein the improvement comprises first uniformly applying a selected fluorescent dye on a selected substrate having a relative permitivity in excess of 3 and less than 96, and then uniformly applying the selected tetraaminoethylene on the selected substrate.

Abstract: HMX is obtained in substantially increased amount by means of a novel modcation of the conventional process for producing HMX by reaction of hexamine with a nitrating agent consisting of HNO.sub.3 --NH.sub.4 NO.sub.3 solution in acetic acid-acetic anhydride medium, wherein the nitrating agent, hexamine solution and acetic anhydride are concurrently added to a mixture of acetic acid and acetic anhydride called a "heel". The modification involves incorporating a small amount of hexamine in the heel prior to the addition of a major portion of the nitrating agent.

Abstract: An optical communications system for coding, transmitting, receiving, and coding digital message signals is described. A beam from a coherent optical source, such as a laser, is transmitted through an aperture in which there is disposed a random phase screen, e.g., ground glass. One or more isometric bar gratings containing the coded message data in a particular amplitude distribution pattern are disposed adjacent to the ground glass in the optical transmission path. The ground glass, phase screen, introduces a random coding to the message bit. At the receiver a plurality of point detectors sense the signals to facilitate subsequent decoding of the message.

Abstract: A ballistic modifier produced as the product of the pyrolysis of heavy me oxides and various ureas.

Abstract: An article for use as a solution releasing control device in a fluid conting medium, such as air containing water vapor, is provided including an inner material composed of solid substance capable of sorbing this fluid and also capable of dissolving in this sorbed fluid, for example a hygroscopic, deliquescent agent such as lithium chloride or a mixture of lithium chloride and the tetrasodium salt of ethylenediaminetetraacetic acid. This inner material is enclosed in a container fabricated of a material which is substantially impermeable to the fluid in the medium surrounding it and is substantially nonwettable by the solution formed from the sorbed fluid and the sorbing agent, for example an essentially hydrophobic film, such as polyethylene. The container is provided with perforations of pre-determined number and size to provide an accurately controlled fluid sorbing and solution releasing device.

Abstract: An electronic key comprises a first binary counter and a first multiplexer or pulse code modulating a uniform clock pulse train to produce a first coded pulse train modulated with a given code. The key is connected to an electronic lock comprising: a second binary counter and a second multiplexer for pulse code modulating the same clock pulse train to produce a second coded pulse train modulated with the same code; an EXCLUSIVE-OR gate to which said first and second multiplexers are connected; a first NAND gate having one input connected to the output of the EXCLUSIVE-OR gate; a flip-flop or a binary counter having its clock input connected to the output of the NAND gate and an inital logical ONE output connected to a second input of the NAND gate; a second NAND gate having one input connected to the output of the flip-flop or counter and another input connected to the output of the second multiplexer; and a binary output counter having its clock input connected to the output of the second NAND gate.