Abstract: A disposable EOD dearmer (10) includes an propellant charge (36) permanen affixed to a tubular body (14) for propelling a dearmer slug (40) against a dud casing (12). The pressure versus time characteristic (60, 70) of the charge can be selected to provide a preselected velocity for the slug at impact with the casing, and the initial position (60', 70") of the slug can be selected to provide a preselected delay between ignition of the charge and impact between the slug and the casing.

Abstract: A process for preparing 2,4-dinitro-2,4-diazapentane by(1) nitrating dimethylurea to form dimethyldinitrourea;(2) hydrolyzing the dimethyldinitrourea to form methylnitramine;(3) reacting one mole of methylamine with one mole of formaldehyde in aqus solution to form 2-nitro-2-aza-1-propanol; and(4) reaction one mole of methylnitramine with each mole of 2-nitro-2-aza-1-propanol to form one mole of 2,4-dinitro-2,4-diazapentane.

Abstract: A novel composition of matter comprising a mixture of a nitrocellulose poer and a plasticizer comprising N,N' dimethyl methylene dinitramine.

Abstract: A rocket propelled missile round prepackaged in an environmentally sealed d electromagnetic interference protected container is adapted to be loaded into the rear of a portable hand-held launch tube for launching. The prepackaged round container is provided with pairs of electrical contacts on its exterior for receiving rocket motor ignition current from the launcher. The contact pairs are normally electrically shorted, but the shorting is adapted to be disestablished or "off shorted" by means within the launch tube, when the prepackaged round is received therein, for allowing selective ignition of the round's rocket motor.

Abstract: A roller bearing hot box sensor utilizing a metallic temperature sensitive longated wire element. The wire element contracts at temperatures in the range of about 125.degree. F. to about 225.degree. F. so that when the contraction movement of the wire is attached to a connector means that operates a firing pin. Movement of the wire element initiates an electrical battery or other power source and thereby transmits electrical current to a signaling device, that gives a signal.

Abstract: An infrared sensitive photodiode which is made of an epitaxial layer of a miconductor alloy which is a lead chalcogenide, a lead-tin chalcogenide, or a lead-cadmium chalcogenide grown on a single crystal substrate of an infrared transparent, electrically insulating material, an Ohmic contact deposited on the epitaxial layer, and a non-Ohmic Pb metal contact deposited on the epitaxial layer to form a Schottky barrier, the improvement comprising the inclusion of halide ions in the interface region between the non-Ohmic lead metal contact and the epitaxial layer of semiconductor material.

Abstract: A retainer for attaching a rotating band to a projectile during handling ramming of the projectile. The retainer cooperates with a groove on the projectile and is discarded during firing of the projectile by the force of the charge. An interlocking double split ring forms the retainer with an outer ring having an L-shaped cross-section and an inner ring shaped to fit into the L-shape of the outer ring. Each ring is provided with a split or opening to allow for expansion of the ring over the projectile and into the projectile groove. The outer ring split may be cut at an angle of less than 90.degree. to minimize deflection of the outer ring. The inner and outer rings are assembled with their splits together and then clocked 180.degree. apart. The inner ring is then locked to the outer ring by a locking notch. Hoop stress of the outer ring prevents the inner ring from deflecting at the split such that the retainer is forced to behave as a continuous single ring.

Abstract: An isolation steam valve arrangement for use on the exhaust side of a steam urbine for directing exhaust steam therefrom to steam operated auxiliary equipment and for relieving or venting steam to the atmosphere. The valve arrangement includes a casing, or body provided with a single inlet and plural outlets. A main valve between the inlet and one of the outlets is selectively positionable from fully open to fully closed for controlling steam flow through one outlet for operating auxiliary equipment. A normally closed vent valve between the inlet and other outlet is adapted to open upon closure of the main valve to establish open communication between the inlet and other outlet in order to continuously vent to the atmosphere a low volume of steam from upstream of the main valve. A normally closed pressure operable relief valve is adapted to relieve to the atmosphere a high volume of pressurized steam from upstream of the main valve.

Abstract: A penetrator interface adapter comprising a generally cylindrical fluted oilless nozzle adapter with means for positioning a penetrator with holder and an energy absorbing collar adjacent the target container so that the penetrator projects into the target or into the container to a predetermined point during each shot.

Abstract: A method of studying steady and unsteady supersonic gas flow using a two layer hydraulic analogy technique. The method simulates the specific heat ratio of the gas. Two layers of immiscible liquids having different densities and thicknesses are held in a shallow container. The densities are chosen and the layer thicknesses are adjusted to simulate the specific heat ratio of the gas. A model of a device to be studied is submerged in the liquid. Relative flow is caused to occur between the model and liquid simulating steady flow. The depth of the lower layer during the period of relative flow is measured and is analogous to steady state gas flow characteristics. For studying unsteady flow two bodies of liquids each having two layers of liquids of densities chosen, and lower layer thicknesses adjusted to simulate the specific heat ratio of the gas and to simulate a high and low pressure across a gas system, are held in a container separated by a removable gate.

Abstract: A novel method is provided for the preparation of difluoramino trifluoromane by the direct fluorination of azidotrifluoromethane in the temperature range of 70.degree. C. to 80.degree. C. A potassium fluoride catalyst also may enhance the rate of reaction and increase the yield.

Abstract: An enclosure for a warhead case which prevents a high order detonation of e warhead due to inadvertent initiation from physical, bullet, fragment impact, fire exposure or other factors causing a pressure buildup in the case. The warhead explosive is assembled in a hollow cylindrical warhead case having an open end and a closed end. An enclosure plate is positioned in the open end to close off the warhead in the case. The enclosure is circular and provided with a first plurality of radially extending apertures. The warhead case is provided with a second plurality of radially extending apertures which are positioned to coincide with the aperture in the enclosure plate. A plurality of pins are press fit into the case apertures so as to extend into the enclosure plate apertures and attach the enclosure plate to the warhead case.

Abstract: A gas flow distribution manifold for distributing oxygen equally to a pluity of burn bar torches allowing large holes to be burned in steel objects is disclosed. The manifold includes a central plenum chamber connected to radial cross passages. Orifices connect the cross passages to outlet chambers wherein the burn bar torches are mounted. Sonic gas flow is maintained through the orifices providing equal flow to the torches.

Abstract: A magnetic holder for pulling in and securing a platform and personnel to e hull of a ship to be serviced is disclosed. A lightweight corrosion resistant body member houses a permanent magnet and has an extension for receiving an elongated tool with which the holder is brought in contact with the ship's hull. A flexible resilient line attaches the platform to the holder and allows the platform to be pulled to the hull. Easy removal of the holder is accomplished by applying an external force to the extension creating a turning moment to overcome the magnetic holding force.

Abstract: An energetic plasticizer which is a mixture of bis(2,2,2-trinitroethyl)fol, bis(2,2-dinitropropyl)formal, and a new compound 2,2-dinitropropyl 2,2,2-trinitroethyl formal.

Abstract: 4,4,10,10-tetranitro-6,8-dioxatridecane-1,13-diol polyformal, HO(CH.sub.2ub.3 C(NO.sub.2).sub.2 CH.sub.2 OCH.sub.2 OCH.sub.2 C(NO.sub.2).sub.2 (CH.sub.2).sub.3 O[CH.sub.2 O(CH.sub.2).sub.3 C(NO.sub.2).sub.2 CH.sub.2 OCH.sub.2 OCH.sub.2 C(NO.sub.2).sub.2 (CH.sub.2).sub.3 O].sub.n H, which has high energy, high thermal stability, and which is useful as a prepolymer for plastic-bonded explosive compositions.

Abstract: Bis(2-fluoro-2,2-dinitroethoxy) 2,2,3,3,4,4,4-heptafluorobutoxymethane, (F), CF.sub.3 CF.sub.2 CF.sub.2 CH.sub.2 OCH[OCH.sub.2 CF(NO.sub.2).sub.2 ].sub.2, is an energetic plasticizer with a melting point of -18.degree. C. and thermal stability up to 150.degree. C. HFBF is miscible with polyfluoro- and polynitropolymers and useful as a plasticizer in plastic-bonded explosives.

Abstract: A process for purifying mineral spirits which have been used to clean Otto uel II propelled torpedoes by heating the mineral spirits to decompose 1,2-propanediol dinitrate and remove hydrogen cyanide and other gaseous decomposition produces, and then distill the mineral spirits from the remaining contaminants.

Abstract: Carbohydrazinium dinitrate, which is formed by adding 2 moles of nitric a (HNO.sub.3) to each mole of carbohydrazide (H.sub.2 NHNCONHNH.sub.2). This salt is useful as an oxidizer in slurry gun propellants.

Abstract: The present invention relates to a latch for detachably securing electron cards along orthogonal loading axes. A planar fixed gate is rigidly securable to an external supporting structure and is provided with at least one elongated protrusion extending above one of the planar surfaces. A planar movable gate is rigidly securable to an external electronics mountable structure wherein said movable gate is provided with at least one elongated groove on a planar surface. The planar fixed gate and the planar movable gate are abuttingly engageable to each other with the protrusion matingly fitted within the corresponding groove. The orientation of the protrusion and groove are orthogonal to an axis of a first loading force applicable to the moving gate. A fastener such as a threaded bolt rigidly maintains the planar surfaces of the fixed gate in engagement with the movable gate for rigid support along a second loading axis orthogonal to the first loading axis.