Abstract: A training simulator for the full-scope real-time dynamic operation of a nuclear power plant utilizes apparatus that includes control consoles having manual and automatic devices for operating simulated plant components and indicating devices for monitoring physical values in the simulated plant. A general purpose digital computer configuration is connected to the control consoles to accept input data indicative of the operated condition of the console control devices and perform dynamic real-time simulation calculations for providing output data to the monitoring devices. An instructor's console, which has control and indicating devices, is connected to the computer configuration to perform functions that include initializing and "replaying" selected operational states of the simulated plant. The majority of the control components of the simulated plant, such as valves, pumps and controllers, are simulated separately from the simulated system they control.

Abstract: A method and apparatus for bonding a plurality of metallic leads to pads of a chip where the force of a thermode, which is placed in contact with the chip is increased at a first rate to a maximum force less than required to effect the bonding over a time period required to bring the metallic leads and pads close to bonding temperature, and then increasing the uniform force at a rate greater than the first rate to a force sufficient to effect the bonding. The apparatus includes a chip holder arrangement that is mounted to automatically align to the plane of the bonding thermode to provide for uniform deformities to the bump portions of the bond.

Abstract: An automated discreet soldering system for plated holes of a printed wiring board, having a free piston type crucible mode of graphitic material, which is propelled along a guided path by pressurized nitrogen. A laser beam is directed along a path substantially coincident with the path of travel of the crucible to heat a susceptor surface for melting the solder therein.

Abstract: A charge coupled device that includes an output portion having a field effect transistor disposed in the potential well channel to provide a non-destructive read-out of the analog value of a charge packet located in the portion of such potential well channel beneath the transistor. Drain, source and channel regions of the transistor are disposed transverse to the flow of charge packets. The conductivity of the channel is modulated as a function of the value of a charge packet in the potential well beneath the transistor.

Abstract: An assembly for optical communication between a pressurized high-voltage component housing and a low-voltage component housing having respective abutting side walls.

Abstract: A medium to low PRF pulse doppler radar wherein the effect of the clutter notch filter is eliminated at times when the doppler frequency of the target approximates the doppler frequency of the clutter to continue tracking the target provided that the doppler frequency of the target and clutter are at different ranges.

Abstract: Apparatus for decreasing effect of transition of more significant bits in D/A converter reference of A/D converter. A pair of D/A converters are connected in tandem to eliminate transition of more significant bits of half scale. Also, three D/A converters are connected in parallel with each being offset from one another so that the effect of bit transition is minimized and occurs at different steps in analog output.

Abstract: A metallic lead frame strip, method of manufacturing same, a test tape, a method of testing together with the art work for same is disclosed. The method of manufacturing includes a method for producing art work that provides for accuracy in etching both sides of the lead frame strip simultaneously and permits a highly accurate positioning of the bonding bumps of at least one integral bonding bump for each lead and also discloses leads having a plurality of bonding bumps for connecting electrically common portions of a chip to be tested. Also, the use of registration aids are disclosed which allow lead bumps to be registered to chip pads even though the bumps cannot be seen in the alignment step. The testing of the chip also includes a method and double-layer test strip that may be used repeatedly for testing successively larger chips having an increasing number of individual leads.

Abstract: A tethered aerostat mooring apparatus for launching, maintaining aloft, and docking an aerostat that is readily foldable for ease of transport, and mounted such that the entire structure rotates on one axis to permit weather vaning of a deployed aerostat, and includes a flying sheave that rotates on an axis perpendicular to the first axis such that movement of the aerostat in azimuth maintains alignment with the fairlead of the sheave, thus providing ease of operation regardless of the dynamic movement of the aerostat.

Abstract: A digital noise generator, wherein pseudo-random rapidly changing analog input voltages to a voltage controlled oscillator are used to generate corresponding rapidly changing discrete frequency outputs, is disclosed. Means are provided to delay the oscillator output by an amount at least equal to the rise time between each frequency change. The delayed and non-delayed oscillator outputs are electrically coupled through a switch that operates at times and at a rate to eliminate the rise time between frequency changes and thus improve the frequency spectrum.

Abstract: In a single channel medium PRF pulse doppler radar receiver, the return signal data is processed to prevent sidelobe return signals from being displayed and rejects ground moving targets up to approximately 80 knots while having no high velocity blind speeds. After the returns are filtered by a doppler filter notch for rejecting returns having a velocity substantially less than the 80 knot example, the return data undergoes three stages of correlations to reject sidelobe returns, and undergoes processing including a fourth correlation which enables the third stage of correlation to output a signal only for unambiguous ranges that contain target data in excess of the 80 knot range.

Abstract: A two axis gimbal set for a pod mounted electro-optical system wherein the azimuth gimbal is supported by the elevation gimbal which in turn is supported between a pair of spaced supporting arms of a base by bearings, one of which has a circular opening therein through which the line-of-sight travels from the optical system to a movable mirror. An inertial dampener is attached to the mirror shaft for reducing effects of vibration on the line-of-sight.

Abstract: A charge transfer device having a transistor input signal divider is provided with blooming control electrode portions and blooming control drain regions to rapidly draw any excessive charge from the potential wells.

Abstract: A method of processing doppler signal data to provide time and frequency (therefore phase) coincidence for complementary code pairs of a coherent, pulse compression radar using a weighting of every other echo pulse of a particular range cell to guarantee pulse compression sidelobe cancellation in accordance with complementary code theory.

Abstract: A beam space adaptive array antenna system utilizing a two-stage Butler matrix configuration is disclosed. The individual elements of one subarray are input to the respective ports of a first-stage Butler matrix and the remaining summed subarray elements are input to a second-stage Butler matrix. The zero order output of the first stage Butler matrix is fed to the input of the second stage Butler matrix.

Abstract: A trailing wire antenna coupling and control method for providing maximum voltage limited power output from power amplifiers of a high power low frequency RF transmitter system while varying the inductance of the coupling circuit to present a high resistance load having practically zero reactance to the power amplifiers, all during extension and retraction of the antenna toward and from its optimum length, as well as at the optimum length.

Abstract: A heat dissipating container for electrical components immersed in a liquid dielectric in one chamber and for electrical components surrounded by an air dielectric in another chamber. A flexible bladder serves as a common wall with the liquid dielectric chamber and an air filled recess that is in communication with the air filled chamber to compensate for expansion and contraction of the liquid.

Abstract: A jamming analysis and transmission selection system for a radar wherein the frequencies present in the environment are sampled during a discrete time interval following each radar transmission; and utilizes a surface acoustic wave device having a plurality of spaced groups of interdigitated fingers on a substrate wherein each of said groups has a finger width and spacing to be resonant at each of a plurality of anticipated different interfering frequencies. The output of the device is sampled following each discrete time interval to identify the presence of the selected interfering frequencies to change the transmission frequency of the radar transmitter to a non-interfering frequency.

Abstract: The existence and method of suppression of spurious post mode to improve sidelobe performance of an array of dipole antenna elements together with examples of geometric configuration for suppression of such post mode is described.

Abstract: An amplitude modulation detection apparatus that includes an envelope detector portion having a pair of diode rectifiers electrically connected at their cathodes which common cathode connection is connected through a series resistor to the input of a low-pass video filter having parallel-connected termination resistors at its output and input of a selected value. A forward biasing circuit that includes a DC voltage source coupled to a low input off-set operational amplifier having its output applied to the pair of diode rectifiers. A third diode rectifier is connected to the input of the operational amplifier at one side and to ground through a series-connected resistor. The series-connected resistor has a value that is determined in accordance with the values of the resistor connected to the commonly connected cathodes and the termination resistors in order to subject the three diode rectifiers to identical operating conditions to obtain optimum temperature compensation.