Abstract: Coatings for a diamond surface of an optical element control reflections and oxidation at the surface. Transmissive element coatings effective in the infrared and at up to 800.degree. C. have a first layer of amorphous hydrogenated silicon deposited directly on the diamond and have a second layer of aluminum nitride, yttrium oxide, hafnium oxide or other refractory oxide deposited directly on the first layer. The first layer may be relatively thin and for adhesion only with the second layer constructed of an oxide and having a thickness selected to control reflection, or the thicknesses of both layers may be selected together to control reflection with the proportion of hydrogen in the first layer varied to select its refractive index.

Abstract: An intermetallic thermal sensor comprised of a hermetically sealed housing containing alternating layers of electronegative and active metals or their alloys in intimate contact. The layers may be wafer or washer-shaped. If washer-shaped, the holes in the wafers are aligned with each other to create a well within the housing and any extension thereof. A tubular-shaped liner extends into the well and may contain an energetic composition such as BKNO.sub.3. In one embodiment a thermite charge in the sensor can be ignited for venting applications. The active metal and electronegative metal and their alloys are selected so that when the melting point of one or both metals, alloys, or metal and alloy pairs has reached its or their melting point in response to external heat within a design range of the sensor, a vigorous exothermic reaction occurs to initiate a gas-producing reaction in the well or to ignite the thermite for operation of a cook-off mitigation system.

Abstract: An electronics circuit receives a sub frame of encoded doppler data having roups One through N of data words with the first three words of Group N comprising a frame sync signal which is compared to a reference signal with a sync pulse being generated whenever the signals are identical. This sync pulse is supplied to three counters to load each counter with a predetermined count. The first counter counts the number of words in each Group; the second counter counts the number of Groups in a sub frame and the third counter indicates the location of Automatic Gain Control and Word Width data within the sub frame. Encoded within each group of a Sub Frame are one or more clusters of doppler words with a fourth counter indicating the location of these clusters of doppler words. A word decoder circuit in response to a gain signal and a word width data signal decodes each word of each group of the sub frame having doppler data to extract the doppler data.

Abstract: Blood circulation in an injured human foot is involuntarily promoted in a cuum over-pressure cycle and in synchronism with the heart's systolic and diastolic pressure pulsations. In a preferred embodiment the circulation apparatus comprises an air tight boot contoured to the injured foot, a pulsed synchronized tourniquet for inhibiting blood flow to the injured foot during an over-pressure cycle and a control circuit which monitors the heart's systolic and diastolic pressure pulsations and provides electrical control signals to the pressure modulator to assure that the over-pressure and vacuum pulses are cyclic and in synchronism with the heart's systolic and diastolic pressure pulsations.

Abstract: A mounting bracket for mounting a Global Positioning Antenna to the fusel of a fixed wing aircraft. The apparatus comprises a rectangular shaped mounting plate having a cylindrical shaped member positioned in the center of the mounting plate and extending from its bottom surface. There is an aperture extending through the cylindrical shaped member and the plate through which the antenna cable passes with the cable connecting the antenna to the receiver. The antenna mounting bracket is secured to the aircraft by inserting the cylindrical shaped member into the sextant port of the airframe so that the bottom portion of the cylindrical shaped member including a pinning aperture extends into the interior the aircraft. A quick release pin is inserted in the pinning aperture to tightly secure the antenna to the airframe.

Abstract: Triisopropylindium diisopropyltelluride adduct, ((CH.sub.3).sub.2 CH).sub.3 In:Te(CH(CH.sub.3).sub.2).sub.2 is synthesized and is used as a universal n-type dopant for both II/VI semiconductor materials as well as III/V semiconductor materials is disclosed. This dopant precursor is particularly suited for indium doping of II/V semiconductor materials at low carrier concentrations down to 10.sup.14 cm.sup.-3 and does not exhibit an appreciable memory effect.

Abstract: A new type of fully-multiplexed imaging device is described for use at wavelengths where efficient focal plane array detectors are unavailable. It shares some properties in common with the familiar technique of cycle-redundancy (i.e. Hadamard transform) imaging, but many of its features and capabilities are unique. Some of these characteristics are, first, the new approach employs image encoding masks that are both transmitting and reflecting, thereby increasing optical efficiency, and second, the technique requires only 2.sqroot.N encoding masks to image a field of N pixels, a dramatically smaller number than that needed (.about.2N) by traditional methods. Dual complementary inputs are used for first-order passive rejection of radiation background interference. The resulting image spatial resolutions along two coordinate directions are completely independent of each other. The measured image is formed by a convergent tiling of the image plane, quite unlike conventional raster scanning.

Abstract: A decoder circuit for receiving a video input signal which includes Manchester coded data bits and a range tone component having a frequency of about 102.6 kilohertz. A phase lock loop circuit detects the presence of the 102.6 kilohertz range tone component and then generates a system clock signal which is phase locked to the range tone component of the video input signal. The system clock signal is provided to a clock generating circuit which generates a clock signal having four phases. The phase lock loop circuit also provides a logic signal which is supplied to a data detecting circuit allowing the data detecting circuit to convert the Manchester coded data bits to digital data bits.

Abstract: A Process for analyzing full-text is provided for identifying often-repea, high user interest, word phrases in a database. Often-repeated, high user interest, word phrases are defined as pervasive theme areas (PTAs). The process also allows the relationship defined as connectivity among the various PTAs to be identified. In addition, phrases that are in proximity to the PTAs and which are strongly supportive of the PTAs are identified. Numerical indices, figure of merit, and user defined thresholds are used to quantify relations between PTAs and among PTAs and phrases.

Abstract: A digital audio signal processing circuit for eliminating the amplitude and phase components of logic induced modulation from a left right clock signal, a bit clock signal and digital data bits generated by a digital signal processor within a compact disk player. The digital audio signal processing circuit includes a trio of optical couplers for removing the amplitude component of logic induced modulation from the left right clock signal, the bit clock signal and the digital data bits; a clock circuit for generating a system clock signal and a trio of D Flip-Flops for removing the phase component of logic induced modulation from the left right clock signal, the bit clock signal and the digital data bits and a digital to analog converter for separating the data bits into left channel data bits and right channel data bits and for converting the left channel data bits into a first analog signal and the right channel data bits into a second analog signal for use by speakers or the like to provide stereo sound.

Abstract: An improved technique for the active control of various combustion devices. This improved technique employs a flame kernel pulse actuator which produces periodic flame kernels by a spark ignition of a stoichiometric air and fuel mixture upstream of the combustion chamber. The discrete flame kernels are convected in a duct of premixed fuel and air which produce discrete pressure oscillations due to the energy release as each discrete flame propagates. Because the source of the energy release is essentially a chemical reaction, the flame kernel pulse actuator is able to produce a substantial amount of energy release even at the high operating pressures which are often encountered in many operational environments. These pressure oscillations may be adjusted to suppress or augment any combustion induced pressure oscillations as well as act to modulate the mixing layer between the fuel and air, thus controlling the downstream combustion process.

Abstract: An improved method of producing a controlled fragmentation warhead case by mbedding an expanded metal liner on the interior surface of a casing for a warhead or other ordnance device. The process of embedding an expanded metal liner into the casing during the forming of the casing produces a controlled fragmentation grid on the interior surface of the casing. The improved method of producing a controlled fragmentation warhead case is particularly suitable for weapon systems employing large, unitary warheads.

Abstract: A scan converter processes an input video signal having a fixed number of an lines per frame, a horizontal synchronization rate and a vertical synchronization rate on an input video line to produce an output video signal having a predetermined number of scan lines per frame and a selected number of pixels per line on a video output line. The scan converter locks to the vertical synchronization rate of the input video signal to make the output video signal have a vertical synchronization rate equal to the vertical synchronization rate of the input video signal. The output horizontal rate is determined by multiplying the vertical synchronization rate by the predetermined number of scan lines per frame in the output video signal. The input horizontal synchronization rate is multiplied by the selected number of pixels per line to produce a WRITE pointer signal for writing input picture lines into a memory.

Abstract: An igniter for solid fuel rockets in which hot gases from an initiator are hanneled to drive a piston against a reservoir of combustion modifying fluid, like ethylene glycol, so as to spray the fluid onto the propellant grain just before ignition. After the piston moves, the hot gases escape the igniter as to ignite the propellant directly or through an intermediate main ignition charge.

Abstract: Process for preparing a high temperature superconductor such as yttrium bum copper oxides, by dissolving suitable proportions of hydrolyzable salts, oxides, or organometallic compounds of yttrium, barium and copper in an acid pH-controlled water-containing organic solvent such as methanol, and subjecting the resulting solution to ultrasonic energy or to an oxidation-reduction reaction, preferably while passing oxygen under a positive pressure through the solution, and precipitating a hydrolyzed precursor material. Such precursor material is then heated or annealed at temperatures between about 300.degree. C. and about 600.degree. C., also preferably in the presence of flowing oxygen, to produce the desired high temperature superconductor material.

Abstract: A single-input single-output control system includes an H.sub..infin. controller having an input for receiving an command input signal and an output for producing an output signal, an electro-mechanical (E-M) actuator connected in series with the H.sub..infin. controller and having an input for receiving the output signal from the H.sub..infin. controller and an output for producing an output signal representative of an action taken by the E-M actuator, and a feedback loop connected in series with the E-M actuator and the H.sub..infin. controller for transferring the output signal of the E-M actuator to the input of the H.sub..infin. controller for combining with the command input signal and inputting an error input signal to the H.sub..infin. controller. The H.sub..infin.

Abstract: A nonvolatile memory system is disclosed which will store a key or digital word for a period of time of approximately three years with minimum power consumption. The nonvolatile memory system includes a nonvolatile static random access memory for receiving and storing a key word from a loader, and a nonvolatile memory sequence control circuit which provides logic signals for controlling read and write operations of the nonvolatile static RAM, as well as logic signals to allow for transfer or down loading of the key word from the loader to the RAM. In addition, the nonvolatile memory sequence control circuit provides logic signals to interface with an encryption device which allows the key word to be transferrred or up loaded from the nonvolatile static RAM to the encryption device and logic signals for storing the key word in a nonvolatile electrically erasable programmable read only memory (PROM) and then bringing the nonvolatile static RAM to a low power standby state.

Abstract: The addition of cathode materials comprising In.sup.+++, Pb.sup.++ or Cd.sup.++ ion, e.g. in the form of salts such as In(NO.sub.3).sub.3, Pb(NO.sub.3).sub.2, Cd(NO.sub.3).sub.2 or the corresponding perchlorates, to oxyanionic electrolyte cells increases cell potential. Such cathodic materials are added to lower melting fused salt oxyanionic electrolytes such as nitrate or perchlorate electrolytes, e.g. LiNO.sub.3, KNO.sub.3 or LiCl0.sub.4, in a concentration sufficient to increase cell potential, using Li or Ca anodes. A suitable metal current collector such as a Ni screen can be used as a cathode. The above cathodic materials can be used in conjunction with other cathodic materials such as AgNO.sub.3, which undergoes reduction to the free metal.

Abstract: A modular containment structure adapted for the storage and handling of hrdous materials which is a rectangular shaped box like structure with exterior walls, a floor, a roof and a door for access to an internal portion of the structure. Included in the internal portion of the modular containment structure are modular shelving units for storage of the hazardous materials and a computer for maintaining an inventory of the materials stored within the structure.

Abstract: A new siloxane polymer containing disilacyclohexadiene rings in the polymer ackbone and a commercially viable method of making it are disclosed. The new polymer is an elastomer, and it has unsurpassed thermal stability. Some of the thermal, mechanical, and chemical properties of the new polymer are described.