Abstract: The operational amplifiers conventionally used in electronic analog compus can be replaced with fixed-gain differential amplifiers having no external negative feedback to control their gain. This allows a large increase in the bandwidth of the computers, with a resulting faster response time. Circuits for summing, integration, and differentiations are specifically disclosed using fixed-gain amplifiers.

Abstract: An abstract is provided which is capable of clearing encased explosives s as land mines. This apparatus combines a shaped charge jet with a plate penetrator. A depression is formed in a column of a first explosive material. The depression is provided with a metal liner such that detonation of the first explosive material forms a shaped charge jet. The shaped charge jet passes through a hole in a plate penetrator and exits the device without detonating a second explosive material. The shaped charge jet strikes the ground and imparts kinetic energy. As the energy in the shaped charge jet is consumed, the second explosive material detonates and drives the plate penetrator to supersonic velocities. Since shaped charge jet velocity exceeds the detonation velocity of the second explosive material, the shaped charge jet clears a path ahead of the plate penetrator.

Abstract: A self-regulating apparatus for providing cooled air to multiple supplied r respirators users through a manifold automatically maintains the air supplied to the respirator users within a desired constant temperature and pressure range although the number of respirator users and the ambient temperature may vary. The apparatus includes a temperature regulator connected to a vortex tube to regulate the exhaust air exiting the vortex tube and a back pressure regulator connected to the manifold.

Abstract: An improved electrically controlled thermotropic liquid-crystal heat valve to control the flow of heat between two bodies of different temperatures by interposing therebetween a fluid layer of liquid-crystal material having a nematic temperature range that includes the temperature of both bodies. This type of heat valve has particular application to any free-swimming divers' diving garments, to provide some thermal protection against the cold ambient water. The heat valve uses stable liquid-crystal materials encapsulated in a sealed environment, with the valves' electrodes being shielded and not in direct electrical contact with the liquid-crystal material. This arrangement essentially completely eliminates the electrochemical effects which can otherwise degrade the liquid-crystal materials, so that the liquid crystal may function for a very long time.

Abstract: A method for replacing a spool mount or other noise reducing device which located in a confined area. The tool for practicing the method includes both extraction elements and installation elements. The extraction elements include an extraction guide, an extraction stud, and an extraction rider. The installation elements include an extension guide, a compression guide, and an installation rider. The tool drastically reduces the time required for replacement of a spool mount and does not require any cutting or welding.

Abstract: An optical storage device having a mass storage medium which remains stationary as data is transferred by a laser. The stationary mass storage medium permits rapid data transfer since delay due to rotation of the medium, as in a compact disk, is eliminated.

Abstract: Method for making electrolytes for Li/metal tetrachoroaluminate.nSO.sub.2 /carbon rechargeable cells containing calcium or sodium tetrachloroaluminate, by treating the metal tetrachloroaluminate salt mixture with sulfuryl chloride to purify it of hydrolysis products, removing the sulfuryl chloride, and dissolving the mixture in sulfur dioxide.

Abstract: The invention relates to a Faraday cage for use with relatively unshielded lectrical instruments to allow the instruments to be used in an environment of high electromagnetic interference. The cage is constructed of lightweight plastic material and is designed to be portable. It is a rigid cage when unfolded for use, yet is capable of being folded into a compact one-piece, substantially flat, stowable package, which can be erected for use with a minimum of effort.

Abstract: Safe transportation holder and package for explosive devices such as blasg caps. Each cap is contained in an internal cavity in a holder, and surrounded by radially-spaced, elastomeric walls. The holders are arrayed in a container, and absorb the energy released by accidental detonation of one cap to prevent sympathetic detonation of others in the package.

Abstract: A valve with an O-ring, a disk seal, and a replaceable valve seat. A groove n the bottom of the valve seat flange forms an inner and outer drip ledge with the inner and outer periphery of the flange. If leakage occurs at the valve seat O-ring, fluid droplets will form on the outer drip ledge. If leakage occurs at the disk seal, fluid droplets will form on the inner drip ledge. A visual inspection of these drip ledges through an access port, or by a borescope placed in an inspection port, can discriminate between a leak which originates in the O-ring and a leak which originates in the disk seal.

Abstract: Shipping container latch pins are installed utilizing apparatus including o pivotally interconnected working members having opposite endportions. Motive means in the form of a bolt member are carried by one endportion of one working member and are operative to move the associated endportions of the working members away from each other, thereby moving the opposite endportions toward each other to press a pivot pin into a latch. The opposite endportions are biased away from each other by a spring, and include opposed pairs of open-ended slots for receiving the ends of the pivot pin.

Abstract: Illuminating flare has an igniter in which a two-part inertial mass is gud for relative aftward movement from a safe position to an armed position under launching forces. One part of the mass undergoes relative forward movement to an ignition position under parachute-opening, deceleration forces while the other part of the mass is restrained from moving as far forward as the first part. This separation of the parts of the mass releases locking balls to unlock a firing pin, which stabs a primer and initiates ignition of the flare. The primer is contained in a rotor, and as the mass traverses from the safe position to the armed position it rotates and the rotor rotates with the mass. In the safe position the primer is out of communication with an ignition passage through which ignition of the illuminant composition occurs. Rotation of the rotor as the mass traverses to the armed position places the primer in communication with the ignition passage where it remains until activated by the firing pin.

Abstract: A surface examination assembly for examining surface contours by detecting nd recording surface contour data including profile data to determine the existence of variations of the surface from design specifications, and to determine the existence of structural degradation as indicated by surface contour changes includes a mounting frame for holding the assembly elements and for mounting the assembly on or near the surface to be examined, a probe arm adjustable mounted on the frame by means of a slide block, the slide block permitting movement of the probe arm in both a vertical and a horizontal position relative to the frame, a recording device for use with a recording medium mounted on the frame, the recording device being operatively engaged with the probe arm and moveable in response thereto to permit contour and profile data detected by the probe arm to be transmitted through the recording device to the recording medium.

Abstract: A line of sight missile system wherein the missile includes a beacon and a eceiver, and the control station includes a telescope and a four-quadrant, polarizing encoder. The telescope is sighted on a target by the operator, the illumination from the beacon passes through the encoder and is reflected back to the receiver. The signal received by the receiver is processed within the missile and provides flight control instruction.

Abstract: A broadband RF microwave source is used to generate a high-energy, narrow lse which is used to provide the illuminating signal for an active radar system while simultaneously jamming other active radar systems. The generation of the RF microwave energy utilizes a spark gap generation system. Jamming is accomplished by overload ringing of the receiver portion of the other radar systems.

Abstract: A motion translating device for receiving a force input from one direction nd translating it mechanically by combined linear and rotational components into a resultant motion is a different direction. The apparatus consists of a slotted frame member having a base for mounting to another object such as an airborne weapon and a pair of separated, parallel and vertical walls extending upwards from the base. A slotted slide member is movably contained between the two walls so that when a generally horizontal force is applied to one end of that member by way of a cable connected between that other object and said one end of the slide member, the slide member is caused to move forward thru the frame member while simultaneously its opposite end is caused to rotate upwards away from the frame member.

Abstract: A method and system for classifying a raster scanned target image by collapsing the image into a vector corresponding to a horizontal line of the image, mathematically transforming this vector into a feature vector which corresponds to the power spectrum of the collapsed image, and comparing the feature vector with stored decision rules corresponding to classes of possible target objects to determine if the image represents an object in one of the classes.

Abstract: The quaternary salts of rigidized 1,3-oxazole compounds of the formula: ##STR1## where R is either H or CH.sub.3 O. The compounds are produced in a modif Robinson-Gabriel synthesis of oxazoles. These dyes are used in solution with non-interfering polar solvents, such as ethanol and H.sub.2 O, to form lasing media useful in dye lasers.

Abstract: Various samples of energetic materials are placed in multiple disposable culture tubes to simultaneously monitor and deterine their stability, reactivity, and compatibility. Each tube is evacuated and heated to accelerate aging of the samples, while a pressure transducer provides pressure readings inside the tube for computer analysis.

Abstract: A practical, castable plastic bonded explosive (PBX) is disclosed that is sistant to fire, aerodynamic heating, and mechanical stimuli-impact. The binder is composed of 2-ethylhexyl acrylate, dioctylmaleate, N-vinyl pyrrolidone, Aerosol R-972, t-butyl perbenzoate, cobaltous acetylacetonate, and triethyleneglycoldimethylacrylate, utilizing RDX/HMX as an explosive filler.