Abstract: A multicolor infrared detection device comprising a number of doped quantum ell structural units. Each unit consists of a thick well and a thin well separated by a thin barrier. This arrangement produces strong coupling. Infrared radiation incident on the device gives rise to intersubband absorption. For each transition a photosignal results which allows the detection of a plurality of incident frequencies.

Abstract: A novel conversion coating composition and a method for treating corroded eel surfaces to convert them into a suitable substrate for accepting organic coatings are provided. Corroded steel surfaces treated with the novel composition of this invention by the improved method of application disclosed in this invention show wet adhesion and salt spray resistance properties markedly superior to those of surfaces which were treated with conventional, prior-art, commercially available compositions.

Abstract: A device for the continuous production or the production on demand of a wr-in-oil emulsion from a water soluble chemical and an oil when mixed with an emulsifier. The device operates at relatively low pressures on the water and the oil lines. Water based chemical and the oil are each introduced into the cell through spray nozzles. The nozzles are positioned so as to cause the two sprays to intermix just prior to impinging on the wall of the cell. The action of the sprays and the force of impinging on the wall produces shearing action in the chemicals that helps in producing an emulsion. A long tube extends from the cylindrical cell. This tube contains a passive mixing element which causes the mixed chemicals to be further mixed and to undergo additional shearing action. The effect of the tube is to assure that the chemicals are held in a mixed state long enough for a stable emulsion to be formed.

Abstract: A high temperature rechargeable molten salt cell is provided using a lith-aluminum (48 atomic percent Li) alloy as the anode, a eutectic mixture of lithium chloride (59 mole percent) and potassium chloride (41 mole percent) with a melting point of 352.degree. C. as the electrolyte and barium nickel sulfide (BaNiS.sub.2) as the cathode active material.

Abstract: Although many materials have been used for osseous wound repair, no agent rrently available provides the surgeon with a predictable level of bone regeneration. Because they do not elicit elicit immunologic responses, and because of the disadvantages of obtaining donor bone, ceramic compositions such as phosphate-bonded alumina and similar ceramics have been investigated as possible bone substitutes capable of promoting bone growth. Since ceramic tricalcium phosphate is biodegradable it has been the subject of considerable research. Despite the research effort, the use of tricalcium phosphate ceramic materials in the regeneration of bone is still subject to improvement. A distinctive form of ceramic beta tricalcium phosphate, modified to augment bone regeneration is provided herein. It is readily implantable in a bone cavity to promote formation throughout the cavity of new bone to replace that lost through trauma, disease, respective surgery, and birth defects.

Abstract: A gas flow alternator cyclically connects a microphone to a dynamic flow ssure and then a reference static flow pressure. The microphone converts the pressures to a resultant alternating differential signal providing a first input to a phase-locked amplifier. A second amplifier input is derived from an optical pickup mounted within the housing. A readout connected in the circuit with the amplifier indicates the dynamic flow pressure.

Abstract: In precision winding of fibers onto a bobbin mounted on a mandrel, a suity positioned circuit of lag angle detector, differentiator, threshold and status latch detect the occurrence of a crossover event while a suitably positioned circuit of angle counter, turn counter and data latch record the absolute mandrel angle and the number of complete revolutions of the mandrel at each occurrence of the crossover event. A computer coupled to the status latch and data latch graphically depicts the absolute mandrel angle versus the number of revolutions at the time of each crossover occurrence. This graphic depiction simulates the crossover pattern, thus making it possible to observe the pattern without stopping the winding process to inspect the pattern visually.

Abstract: An air distribution connector valve mechanism includes a pair of mating cectors, each having a self-closing, one way valve arranged and adapted to interfere with the self-closing, one way valve of the other connector when the two connectors are coupled together, such that the two valves will then open for unrestricted passage of air therethrough. Each connector has a coupling mechanism for releasably coupling the two connectors together to cause the interference between them. Each of the valves includes a valve body, and a compression spring associated and aligned therewith, in a valve housing having an axis of symmetry within the associated connector. Each valve body is retained and slidable axially within the housing against the force exerted by the associated compression spring, the latter normally urging the valve body against an end wall of the housing to block an opening therein.

Abstract: A cathode is made from a mixture of tungsten and iridium powders using a ction product formed from reacting a Group III A metal powder with barium peroxide powder as an impregnant.

Abstract: A defensive applique armor for protecting a substrate which may be exposed o attack by projectiles. The armor comprises one or more cast metal plates of predetermined thickness which have slotted holes of various sizes and designs. The slotted holes are cast at obliquity.To the slotted, cast metal armor an optional thin, cast metal layer may be added. Said layer may be positioned either within or external to the cast armor plate.The invention encompasses both the armor and the process of making the same.

Abstract: An electromagnetic launcher or railgun includes a projectile or armature which is comprised of an optically activated semiconductor switch device including a body of bulk semiconductor material, such as gallium arsenide (GaAs) or gallium arsenide doped with chromium (Cr: GaAs), located between a pair of rails across which is connected a relatively high current source. A source of optical energy, such as a pulsed laser, directs optical energy to at least one surface of the semiconductor switch device where the conductivity of the semiconductor body is thereby increased and current from the source is transferred between the rails through the semiconductor body, causing an electromagnetic Lorentz type drive force to be built up behind the armature, which is set into motion and rapidly accelerated along the rails.

Abstract: A tandem warhead missile arrangement that has a composite material housing structure with a first warhead mounted at one end and a second warhead mounted near another end of the composite structure with a dome shaped composite material blast shield mounted between the warheads to protect the second warhead from the blast of the first warhead.

Abstract: Aluminum-coated ammonium perchlorate is prepared in an apparatus consisting f a four-opening reaction flask (which serves as a vacuum chamber). The reaction flask is fitted with an electrically-heated tungsten helix coil (for vaporizing the aluminum), a mercury diffusion pump, a mechanical vacuum pump, a dry ice-acetone-cooled trap, and a McLeod pressure-measurement gage. The heater electrodes are submitted through two of the openings; reduced pressure operation is maintained through the third opening, and the aluminum is fed through the fourth opening. The reaction flask is operated at approximately 10 Torr. A magnetic stirrer permits the ammonium perchlorate to be vaporized onto the surface of the ammonium perchlorate after the melted aluminum on the tungsten helix coil is subsequently vaporized from the tungsten helix coil.

Abstract: The bearing failure sensor includes a micromachined mechanical resonator h a conductive cantilevered beam mounted on a conventional insulating substrate to form a microchip. A conductive contact is mounted in close proximity to the free end of the conductive beam to form a gap. An integrated circuit is connected between the fixed end of the beam and the conductive contact. The microchip is mounted on a vibrating machine to be monitored. When vibrations having a given frequency and magnitude occur, the free end will vibrate and move sufficiently to close the gap completing a circuit and causing currents to flow that are detectable by the integrated circuit. Multiple resonators, having different gap sizes and natural resonant frequencies, may also be mounted on a single substrate to monitor vibrations at a plurality of different frequency and amplitude thresholds.

Abstract: A simple, inexpensive construction, utilizing commonly available plastic ing, hypodermic needle hub, suture materials and cyanoacrylic glue is provided for subcutaneous implantation within a test animal, one of the generally tubular structure being permanently affixed in communication with a selected portion of the gastrointestinal tract consisting essentially of the small intestines, colon, stomach or gut-associated lymphoid tissue (GALT) of the test animal, with the other end of the tubular structrure firmly located behind the head of the test animal for easy access thereto. This invention, following implantation thereof into a test animal, may be readily utilized for the controlled delivery therethrough of multiple doses of one or more selected liquid materials for direct delivery thereof to the gastrointestinal tract of the test animal.

Abstract: The invention provides an array wherein thin laser diodes are mounted with heir broad surfaces in intimate contact with a planar heat input surface of a heat sink; the laser radiation emerges from two opposite ends of the diodes parallel to the heat input surface, to provide more efficient lasing and faster uniform dissipation of heat; and elongated inverted V-shaped cross-section mirrors redirect the radiation into a single combined beam substantially normal to the heat input surface.

Abstract: A high velocity aerodynamic projectile having a central body with a forward nd, a rearward end and a longitudinal axis, the forward end of the body has a pedestal coaxially extending outward from the body. The projectile has aft stabilizing fins or a flare rigidly affixed at its rearward end and a forward stablizing means pivotably attached to the pedestal of the central body. The forward stabilizing means consists of a self-aligning projectile nose having its rearward end separated from the forward end of the projectile's central body so as to allow the self-aligning projectile nose to pivot and align with the oncoming air stream.

Abstract: There is disclosed an improved locking assembly mounted on a door assembly f a SOC and including a plurality of segmented linear bolts peripherally-disposed about the door assembly for engaging cooperating latches mounted on the container body and operatively connected to handle assemblies for latching and unlatching the locking assembly to permit opening and closing of the door assembly of a SOC and wherein each handle assembly is provided with a key operated combination lock.

Abstract: A fin assembly is adapted for rear mounting on a projectile. The assembly s a body with a longitudinal axis and a front adapted for mounting to the projectile. A plurality of angularly spaced fins are pivotally mounted on the body for rotating outwardly from an axial to an extended position. Each of these fins has a pivot point and a center of gravity. The center of gravity for each fin in the axial position is spaced radially inward from the pivot point. Slots formed within the projectile body aid in retaining the fins in their axial position.

Abstract: Explosive devices for foxhole manufacture, demolition and urban warfare. devices comprise a hollow metal cylinder; a cap at the top end closing said metal liner, said cap having a waveshaper on the interior thereof, and said cap having a hole therethrough for insertion of an ignition charge; a closure at the bottom end of said liner, said closure having the form of a liner, depressed inwardly; and an explosive composition disposed within the metal liner between the waveshaper of said cap and the depressed cone of said closure. An alternative explosive device is disclosed wherein the closure at one end of the metal cylinder is spaced apart and inwardly from the open end of said line to form a standoff space. A further explosive device is disclosed wherein additional explosive is disposed within the standoff space but leaving spaces for jet formation.