Abstract: A process is described in which planar photodiodes are formed by diffusing lead into p-type Pb.sub.0.8 Sn.sub.0.2 Te single crystal material.

Abstract: An improved method is provided for the chemotherapy of leishmanial infects. An 8-aminoquinoline anti-leishmanial agent is encapsulated within liposomes and the liposome-encapsulated drug is injected into the body. Subject use of a liposome carrier has produced marked enhancement of the effectiveness of the drug against leishmanial parasites in the liver (such as characteristic of infections which are difficult to treat).

Abstract: A technique for optical non-uniformity correction of a focal plane imaging ystem wherein incoming objective scene light rays impinging on each detector in a focal plane array is corrected on a pixel-by-pixel basis by optical correction means from a separate optical source. The optical correction means is comprised of a multiplicative correction means and an additive correction means. The multiplicative correction means is comprised of a responsivity mask positioned on or near the focal plane that provides a multiplicative factor of unity or less to each detector to cause more uniform sensitivity of the detectors. The additive correction means is comprised of the separate optical source that is positioned in a separate optical train and is comprised of an additive optical correction mask aligned with a light source and focusing screen means and image relay that relay the additive optical correction sensitizing illumination onto the focal plane array or the pixel-by-pixel basis.

Abstract: An infrared reflex device can simulate an infrared image. The device has a latticed panel which has a first and second plurality of exposed elements. The first plurality of elements has over a predetermined infrared spectrum a spectral emissivity substantially less than soil. This first plurality is also a reflector of infrared radiation. The second plurality has greater spectral emissivity and less reflectivity than the first plurality over the predetermined infrared spectrum.

Abstract: Disclosed is a semi-automatic processing system for the production of components requiring the deposition of metallization and assembly in an oil free ultra-high vacuum environment. The system is comprised of a plurality of interconnected tubular high vacuum chambers for separately performing ultra-violet cleaning, bake out, plating and sealing of, for example, quartz crystal resonator units, in an in-line configuration adapted for continuous cycle processing of components. The major elements of the system include: (a) a belt type transport which is adapted to convey one or more components through the respective chamber and into an adjoining chamber through an intermediate gate valve; (b) manipulators for handling the component parts inside the vacuum chambers; (c) long life highly directional evaporation sources for evaporated metal deposition on selected component parts; and (d) a sealing apparatus for hermetically sealing the components after evaporation without exposure to atmosphere.

Abstract: A method of reducing adhesion of ice to a surface by coating it with a bl copolymer of polycarbonate and dialkylsiloxane containing a silicone oil.

Abstract: An apparatus and method for soft recovery of a projectile is disclosed. An lement, at least a portion of which is deformable, is placed in the path of the projectile, whereby the projectile becomes embedded in the element upon impact therewith. Gravitational or aerodynamic forces are applied to the combined projectile and deformable element to decelerate the same thereby making recovery possible.

Abstract: The unbalance in currents flowing alternately in the two halves of a doubended, push-pull inverter is obviated by means of a parallel resonant network, comprised of an inductor and capacitor, placed in series with the power supply voltage applied to the center tap of the inverter transformer primary winding. The network component values are selected to provide relatively a high impedance of the inverter fundamental operating frequency while providing a low impedance at twice the fundamental operating frequency.

Abstract: A fluidic resistor module, including resistor channels connected in paral between two common ports, is permanently adjustable by deforming the cross sections of the individual channels by externally applied forces. The channels are formed on the interior surface of an exterior plate of a bonded plate module, and the indicia indicating the locations of the channels are formed on the exterior surface of the plate. A pair of adjustable resistor modules are used to null opposed fluidic bias means in a laminar fluidic device.

Abstract: Method and apparatus for compensation of switched resistance active filters o maintain a relatively constant Q and voltage gain by switching additional resistors in and out of the filter circuit. Solid state circuitry provides signals for activating switches to switch the compensating resistances as the operating frequency of the filter is altered. Compensation depends essentially on the number of open switches in the frequency selecting resistance array rather than on frequency of operation. An approximate approach reduces the number of resistances and switches needed for compensation, yet provides minimal error.

Abstract: A time division multiple access mobile communications system employing frency division multiplexing and perfect noise codes to enable utilization of the system. A central node, or repeater, is employed, with all transmissions to it being performed at a first frequency, and with the frequency division multiplexing being such that all re-transmissions from the central node are performed at a second, different frequency. The noise codes employed are of a type termed code mates having correlation functions which upon detection provide an impulse autocorrelation function. The described arrangement enables random access, or direct call-up, to be accomplished with total non-interference between users. Large improvements in signal-to-noise power ratio and in signal-to-jamming power ratio will be seen to result.

Abstract: A visible light absorbing and far infrared radiation emitting membrane is closed in an evacuated cell. The membrane consists of a thin insulating film coated with an optical black made from gold alloyed with a small percentage of nickel, copper or palladium. The gold alloy black is deposited in a soft vacuum inert except for a trace of oxygen.

Abstract: A means for training troops to readily identify and successfully engage ey vehicles at night by providing a system simulating the lighting signature patterns of running lights of said enemy vehicles. The simulated running lights may be mounted on a simulated enemy vehicle in the appropriate lighting signature patterns. The simulated enemy vehicle may be a friendly tank or other vehicles, such as jeeps, armored personnel carriers, 3/4-ton vehicles, etc. The simulated running lights may be attached to the friendly vehicle by field expedient tape, wire, screws, etc. and have input power passing through operator dimmer controlled organic dimmer/map light assemblies to adjust the brightness of the running lights in accordance with the brightness of the map light inside the simulated enemy vehicle.

Abstract: A substrate has two or more conductive layers deposited thereon, each adjnt layer pair separated by a dielectric layer. Apertures are formed in the dielectric layer and are filled with resistor paste. In this way, a resistive path may be formed between the conductive layers. This concept of fabricating resistors are particularly useful in the inclusion of pull-up, pull-down and other non-critical resistors in the circuitry contained within a thick film construction.

Abstract: According to the invention, a receive-transmit steerable null antenna prosor includes incrementally adjustable delay lines and a variable ratio power network (amplitude balance control) for adjusting the relative phase and amplitude in two or more antenna branches to steer a null on an interference source. A digital controller compares a signal which includes a representation of the interference level to a previously sampled value to note improvement or not and adjusts the delay lines and amplitude balance accordingly.

Abstract: A spin stabilized projectile is arranged to have variable flight stability. he projectile has a casing with a cavity that contains a given mass of fluid. The cavity is shaped to provide a balanced flow of fluid with respect to the axis of spin as the projectile is trajected. This balanced flow alters the flight stability of the projectile.

Abstract: A recoil-operated gas assisted gun having a linked ammunition feeder means nd a link guide housing arranged so that the links are separated from individual rounds of ammunition as said rounds are introduced into the gun chamber. The link guide housing contains three sets of deflectable pawls that project into the chute defined by the housing. As the linked ammunition is fed upwardly through the chute the pawls snap into positions underlying the links for the three uppermost ammunition rounds; the pawls collectively bear the weight of the linked ammunition system, thereby accurately positioning the uppermost ammunition round and avoiding possible jamming due to variations or changes of the linked components as the length of the link system lessens. A retractor plate is slidably positioned on an outer face of the link guide housing for moving the pawls out of registry with the ammunition rounds, e.g. when it is necessary to download ammunition out of the chute.

Abstract: Disclosed is a signal detector including a bank of digitally synthesized rowband filters all having the same shape of frequency response and differing only in center frequency and which are implemented by time domain data processing. The invention is comprised of: a signal conditioner, an envelope weighting computer, a Fourier transform processor and a post-detection processor. Resulting therefrom is a bank of 16 contiguous narrowband filters having high selectivity along with a corresponding bank of envelope detectors of wide dynamic range which incorporates center frequency acquisition and tracking. Following detection, a matched filter capability is included to provide correlation and data regeneration so that coded FSK data burst signals can be extracted in real time from noise, interference, and jamming signals which would otherwise affect signal detection.

Abstract: A wheeled transporter attachable to a multi-ton cargo container for lifting nd lowering said container, and moving same overland. The transporter includes separate transporter units attachable to each end of the container for building a trailer unit. Each unit is structured to permit high wheel travel for improved operation over rough terrain.

Abstract: In a serpentine feed structure for a frequency scanned antenna a switching etwork is provided which allows the serpentine to be fed from either end on alternate or random scans. This variable transmission system significantly increases the frequency bandwidth that must be jammed by detrimental countermeasure systems. The feed switching network comprises first, second and third switching circulators coupled to receive radiant energy from a radar transmit-receive switch and selectively couple this energy to one or the other end of a serpentine feed structure for controlling the direction of electromagnetic radiation energy coupled through the serpentine structure. The serpentine feed structure supplies radiant energy to an antenna array of a frequency scanned antenna for controlling the sector scanning of the antenna. Reversing the direction of energy flow through the serpentine causes a change in the particular frequencies scanning a given sector of the scan.