Abstract: A simulator and method of testing a sensor wherein an electron gun mounted n a vacuum chamber directs a stream of electronic onto a target plate made up of a heat sink backing sheet and a heat insulating coating sheet adhered to the backing layer to form small hot spots on the coating sheet. The target plate may be a sheet of copper to which is adhered a coating layer of glass or a sheet of aluminum to which is adhered a coating layer of aluminum oxide. Infrared radiation from the hot spots is collimated and passed through an optical system which forms an image of the hot spots on the sensor to be tested.

Abstract: The invention is a gun mount exerciser to force a cannon through its recoil otion which otherwise occurs only when the cannon is fired. The exerciser includes a frame that rests on the outer casing that is fixed around the cannon. The frame is translated on a stationary member by actuation of a fluidically operated cylinder mounted to the stationary member. The frame is fixed to the outer casing of the gun so that translation of the frame effects translation of the outer casing and the cannon itself.

Abstract: A device and method for camouflaging an object or terrain by use of a white .V. reflectance material to which has been applied an appropriate terrain configuration by paint indicating partial snow coverage, desert, or woodland designs. The material may be placed above, onto, beside, against and or secured thereto at different heights and may be extended in different sloping angles for an offset appearance.

Abstract: A solid solution, ferroelectric material with a selectable Curie point cosed of lead titanate and a larger amount of strontium titanate is provided for use as a thermal detector material in ferroelectric uncooled infrared imaging systems.

Abstract: A pattern of electrodes, with electrical lead lines to the electrodes, are arried by a thin-film membrane mounted on a frame. The pattern corresponds to a test point pattern on a circuit to be tested. The lead lines go to edge connectors on the frame. In order to test a circuit, the membrane is pushed against the test points by air pressure, such that capacitive coupling occurs between the electrodes and the test points.

Abstract: A three-color camouflage system comprises layers of camouflage material hng low, intermediate and high thermal emissivities in the infrared spectral range, and appearing black, green and brown in the visible spectral range. The camouflage surface is structured in such manner that there is color adaptation to the natural background in the visible spectral range, as well as adaptation to the natural background in thermal emissivity in the infrared spectral range so that targets cannot be recognized with infrared sensing devices. Thermal emissivity in the infrared spectral range is controlled by superimposing layers of intermediate and high emissivity onto a basic low emissivity camouflage layer and providing perforations in these layers allowing the low-emissivity layer to be seen. High-emissivity areas are provided by perforations allowing the high-emissivity surface of the object being camouflaged to be seen.

Abstract: A heart-sound monitor and esophageal stethoscope which makes use of fluidic aminar proportional amplifiers (LPAs). These LPA's are used to sense and amplify incoming acoustic pressure signals, such as heart signals. Moreover, the fluidic monitor is able to monitor a fetus heartbeat while eliminating the acoustic interference present from the mother's heartbeat. In this case, the LPA acts not only as an amplifier, but as an acoustic filter as well.

Abstract: An insect containing test apparatus which is applied to a skin region of a est subject includes a rectangular slide and test cage made of a clear, autoclavable polycarbonate plastic. The test cage is injection molded to a generally rectangular shape and includes a peripheral flange extending outwardly from sides at an open top. A screen member covering the open top is then heat pressed onto this flange. Test holes are also punched into the bottom the test cage. During injection molding, U-shaped channels along each respective longitudinal side adjacent the bottom are also provided to receive the slide so that the slide is selectively moved to cover and uncover the test holes in the bottom.

Abstract: The present invention relates to an apparatus and method for clearing the uling black powder residues deposited on the electrical connectors of electrically detonated munitions. A female connector is provided with a recurved lanced outer spring clip which automatically scrapes off the residue on an insulator and contact surfaces of a male bipolar connector plug when the two connectors are rotated with respect to each other.

Abstract: The fabrication of a flux source using magnetically rigid material is dissed for deriving a magnetic field of uniform density and enhanced magnitude within an enclosed annular cavity thereof. In the preferred embodiments, segments of the magnetically rigid material are configured and arranged in accordance with the desired direction of the magnetic field relative to the annular axis of the cavity.

Abstract: An analog computer method provides modulation transfer functions (MTF) expressions or graphs for arbitrary shaped detectors in an arbitrary scan direction. Fraunhofer diffraction calculations or measurements given for specific shaped apertures are used for calculating detector MTFs of similarly shaped detectors. In an analog measuring device, an aperture in an opaque screen may be made the shape of a detector whose MTF is to be calculated. The aperture is flooded with laser light which produces a Fraunhofer irradiance pattern at an observing screen which is parallel with the opaque screen, for measuring the irradiance in the Fraunhofer plane at the observing screen. A sensor, which has a detector small compared with the diffraction pattern, is moved along the chosen thermal imager scan direction, in the Fraunhofer plane.

Abstract: An improved scandate cathode is made from a hollow cylinder of a metal that ill not react with Sc.sub.2 (WO.sub.4).sub.3. The first step in making such a cathode is to insert a metal plug at the bottom of the cylinder to a height that will allow the remaining volume of the cylinder to be filled with the reactants WO.sub.3 and Sc.sub.2 O.sub.3. Next, the reactants are heated in a vacuum to about 1100.degree. C. to form the reaction product Sc.sub.2 (WO.sub.4).sub.3. The plug is then removed from the cylinder, the cylinder is inverted, and BaH.sub.2 is added to the volume of the cylinder that had been occupied by the plug. Finally, the cylinder is heated to decompose the BaH.sub.2.

Abstract: A method of forming solid lubricant pockets in boron based and boron containing ceramic materials (i.e. boron carbide) by nitrogen ion implantation and laser annealing. By employing the present method said solid lubricant pockets may be formed in approximately the first 750 Angstroms of the surface and near surface regions of, for example, a polycrystalline boron carbide sample. Moreover, the present invention enables one to direct the formation of solid lubricants to specific areas on the boron based or boron containing ceramics to meet a specific need. The product of the present invention is a ceramic having a reduced coefficient of friction, greater durability, and reduced chipping and fracture.

Abstract: A mine effects simulator system for simulating the operation and encounter f land mines and their potential effects on an armored vehicle. The system utilizes an authentic land mine activation mechanism, radio transmitter and logic circuitry and provides a radio frequency signal when activated by the proximity of an armored vehicle. The armored vehicle has a receiver device which receives the signal to determine a "hit" or "kill" based upon the time of the mine detonation with respect to mine to vehicle position.

Abstract: A test fixture for inverted microcircuits having spaced shelf assemblies h parallel shelves for respectively supporting a substrate for a microcircuit and a substrate for a ground plane in such a manner that the distance between them can be varied while test signals are coupled to the microcircuit via a coaxial cable coupled to a fitting on one shelf assembly and signals are coupled from the microcircuit via a coaxial cable coupled to a fitting on the other shelf assembly to test apparatus for determining the performance of the circuit.

Abstract: This is a new use for known photorefractive crystals. If input radiation taining both non-coherent and multiple-line coherent radiation is directed into such a crystal from a predetermined range of directions with respect to the C axis of the crystal, rainbow scattering of the coherent radiation occurs, whereas normal scattering of the non-coherent radiation occurs. A detector toward which input radiation is directed through the crystal is thus protected from high-power, multiple-line coherent radiation such as that provided by a threat laser.

Abstract: The disclosed invention provides a means for controlling film flatness at r interfaces in the aperture where the film is used as an imaging medium between film holder plates, such as aperture plates. The film is held flat by lateral tension applied outward in all directions from the center portion of the area of the film being viewed by rubberized type O-rings in grooves on each of the aperture plates being clamped against the film by various clamping direct transverse pressure means. The lateral tension is caused by the stretch of the O-ring outward from the center of the aperture by the shape of grooves in the plates constraining any inward movement but providing bias movement of the O-rings outward.

Abstract: This method can be used either as an independent radar system or as an adct to an existing radar system, after suitably modifying the existing system, and will provide a cooperative, Radio Frequency passive, identification system for either stationary or moving targets. The system uses suitable devices that will mechanically vibrate as a transponder mechanism as an attachment to stationary or moving targets. A sideband analyzer is used to identify the viberation pattern in the radar return, and therefore, identifies the target.

Abstract: An optical switch control circuit for controlling a microwave switch using single optical control link. The optical switch control circuit includes, a light source, a control connected to the light source, an optic fiber cable having an end coupled to the light source, a field effect transistor coupled to a second end of the optic fiber cable, an amplifier coupled to the field effect transistor, an analog to digital converter coupled to the amplifier, and a multi-bit microwave switch coupled to the analog to digital converter.

Abstract: The invention provides an improvement in a conventional recoil system comsing a piston-cylinder arrangement, wherein a piston driven by recoil energy forces hydraulic fluid out of the cylinder through an orifice to dissipate recoil force. The invention provides an additional flowpath for hydraulic fluid, which contains a servo valve for controlling the pressure in the cylinder so that the desired recoil peak pressure/time curve can be achieved for any firing impulse. The invention also includes sensors for measuring hydraulic fluid pressure and the initial velocity of the recoiling parts imparted by the firing impulse, and a controller means including a microprocessor for calculating or determining the desired peak pressure based on this initial velocity and available recoil distance and transducers for measuring any variation of pressure from the desired peak pressure and applying an appropriate voltage to the servo valve to control the pressure and achieve the desired peak pressure during the recoil cycle.