Abstract: A triggered spark gap discharger having a small auxiliary gap in the trigger pulse path. The auxiliary gap provides ultraviolet radiation to liberate electrons at the trigger probe and allow prompt firing of the trigger gap and primary gap, particularly in aged discharger units.

Abstract: A multi-row connector having a ground plane board mounted between rows of connector pins on the backside of the connector. Conductor shields of individual wires are soldered directly to conductor strips on the printed circuit ground plane board, and the strips are jumpered to a grounding pin on the connector.

Abstract: A monopulse radar having a single set of phase shifters shared by both sum and difference channels. The radar utilizes an algorithm that effects simultaneous nulling in the sum and difference patterns of its phased array antenna. An algorithm is developed for phase-only nulling which does not require knowledge of the location of interference sources.

Abstract: A radar fuzing system for use in a guided missile wherein the system is tuned in accordance with the estimated intercept closing velocity to permit the use of narrower bandpass filters and thereby reduce the probability of detecting pulse repetition frequency lines and very low Doppler returns from chaff bundles.

Abstract: Improved temperature detection system for use on film cooled turbine airfoils having a showerhead assembly with a series of parallel slots defined in the leading edge of an airfoil, each slot having a multiplicity of film flow ports exiting therefrom. A plurality of sensor assemblies are affixed to the airfoil showerhead and are couplable via electrodes to electronic sensing equipment for establishing the gas flow temperature.

Abstract: A three dimensional optical image receiver having sensor stages with a programmable gain capability. Operation of the receiver occurs entirely in the charge domain upon the charge initially generated by the optical signal.

Abstract: A ported coaxial cable is positioned atop or wound around a coil of barbed wire and is coextensive therewith. Radio frequency energy applied to the cable is randomly dispersed about the exterior of the coil. Variations in the reflected energy caused by intrusion of the area adjacent the coil, including the areas above or beneath the coil, are processed by detection system signal processing equipment to determine the incidence and location of intrusion events.

Abstract: A high voltage coaxial cable wherein a corona-free configuration is produced by applying a room temperature-curable silicone elastomeric material under pressure to the outer surface of the cable braid so that the material is forced between the voids of the braid and adheres to the primary insulation material at the insulation/braid interface.

Abstract: Apparatus for testing the performance of an airborne missile control system, said apparatus including a video signal adapter providing prescribed video displays and interposed between a programmable test set and the host aircraft.

Abstract: Apparatus for holding and facilitating the cutting of translucent sheet material into predetermined shapes. A transparent plate is placed over a plenum formed by a support frame. A plurality of suction holes are formed through the plate having an enlarged diameter at the upper surface of the plate. Grooves are formed part way through the plate for guiding a cutting instrument. Alignment marks are provided on the surface of the plate for registering printed information on the material with the plate.

Abstract: A device for testing the digital waveforms in a special purpose multi-channel transceiver system designed to operate in a tactical environment. As selected waveforms are presented to the test device, they are randomized over a fixed time period creating a unique signature for comparison with a prestored signature at the end of the period. Uniquely assigned light emitting diodes identify which, if any, of the sequentially examined waveforms are incorrect. Provisions are included for latching the light emitting diodes in their illuminated state in order to detect non-recurrent fault conditions.

Abstract: A space fed microwave lens antenna for deployment in outer space or other remote, hazardous or unattended location. Electronic means are provided for compensating for errors in the mechanical displacement of the phased array feed elements from the phased array lens elements.

Abstract: A ported coaxial cable is positioned within a coil of barbed wire and is coextensive therewith. Radio frequency energy applied to the cable is confined within the tubular volume of the coil. Variations in the reflected energy caused by physical disturbances of the coil are processed by detection system signal processing equipment to determine the incidence and location of intrusion events.

Abstract: An electrostatically figured directional antenna array for deployment in outer space having means for suppressing sidelobe responses. A portion of the reflector surface symmetric about its center is vibrated by electrostatic controls to change the amplitude and phase of the sidelobe signals whereby the latter can be eliminated by passive filters or time averaging circuitry.

Abstract: An oscillator circuit utilizing multiple (two) quartz crystal resonators as the frequency controlling elements in a novel circuit arrangement. The use of two crystal units increases the oscillator circuit signal transmission group delay by a factor of 2 to 3 and effects an estimated 6 dB reduction in oscillator output signal phase noise sideband level at carrier offset frequencies less than the resonator half-bandwidths. The degree of resonator tracking required is made practical with the use of temperature controlled SC-cut resonators. In addition, the oscillator circuit is configured so that equal, correlated output signal currents can be extracted from each resonator through individual load circuits, thereby increasing available oscillator output signal amplitude by 2:1 and reducing the net effect of uncorrelated load circuit additive noise by 3 dB.

Abstract: A tropospheric scatter communication system provides diverse angle transmission paths which may be utilized alone or in conjunction with frequency and/or other known diversity system arrangements for improved performance. The diverse angle transmission paths are routed through sum and difference "monopulse" beams displaced in azimuth.

Abstract: A compact waveguide junction for coupling rectangular waveguide of one frequency band to a coaxial waveguide, and a second rectangular waveguide of a second frequency band to the interior of the hollow center conductor of the coaxial waveguide.

Abstract: A Gaussian convolution is produced in a CCD imager or shift register by a method involving a special clocking sequence. The principle of operation, analagous to the process of diffusion, involves the deliberate intermixing of adjacent charge packets in a controlled way. Amounts of charge are exchanged between adjacent pixels a number of times, the result approximating the convolution of the image with a Gaussian function whose width is dependent upon the number of mixing cycles.

Abstract: A narrow band, voltage controlled crystal oscillator having a linear frequency versus tuning voltage response. The oscillator uses a composite resonator in a novel circuit configuration with a resulting improvement in oscillator output signal frequency stability.

Abstract: An asymmetric thrust warning system for an aircraft having two gas turbine engines. The compressor discharge pressures of the two engines are compared to determine the engine providing the lower thrust and to provide a signal indicative of the actual difference in thrust. If the difference in thrust exceeds a prescribed value related to aircraft altitude, a low thrust warning lamp is illuminated. In addition, the positions of the two augmenter metering valves are compared. If their positions significantly differ, the warning light associated with the valve having the minimum opening will be illuminated. A stall warning circuit may also be included as a part of the system.