Abstract: A gyro platform assembly for determining the coning rate of a spinning and oning vehicle. A rotatable gimbal is attached to the vehicle such that the axis of rotation of the gimbal is in line with a spin axis of the vehicle. A rotatable platform, that supports three gyros, is attached to the gimbal. An axis of rotation of the platform is perpendicular to the axis of rotation of the gimbal. Each gyro has a rotation sensing axis, the sensing axes being mutually orthogonal, one such sensing axis being placed in line with the spin axis of the vehicle. A sensing axis, that is orthogonal to the spin axis of the vehicle, senses a coning rate of the vehicle. The output of the sensing axis is processed by a computer. The computer outputs a value equal to a sine of the coning rate of the vehicle.

Abstract: A recognizer system having a transmitter for transmitting and a receiver receiving a serial stream of bits that includes data bits and a predetermined bit pattern. The recognizer system recognizes the predetermined bit pattern. A bit of the serial stream of bits is directly inputted from the receiver into a memory due to a clock pulse on the memory. The memory is programmed with decision tree statements of a decision tree. A initial state value, stored in a latch, is also inputted, from the latch, into the memory, due to the clock pulse on the memory. A next state value is immediately outputted from the memory. The outputted next state value replaces the initial state value stored in the latch, due to a delayed clock pulse on the latch. The next state is available to the memory. A signal bit is also outputted from the memory to a user device for the digital data. The system continues until a predetermined bit pattern produces a final state of a decision tree out of the memory.

Abstract: A caging system for a magnetized rotor of a gyro. A capacitive detector dcts amounts of linear deflection of the rotor, from an upright position, over time. A computer calculates the linear deflection velocity of the rotor. A power supply sends an amount of current to an electromagnetic coil dependent on the amount of linear deflection velocity of the rotor. An electromagnetic field from the electromagnetic coil moves the rotor to an upright position.

Abstract: A method of determining the effects of stress on a non-linear orthotropic ssile structure. Measurements of non-linear orthotropic strain, due to step-wise increasing stress in one of three orthogonal directions, are made. Non-linear orthotropic strain terms of the missile structure, in each of three orthogonal directions, are determined from the measurements. A compliance matrix is formed by using the determined strain terms. This compliance matrix is used in an iterative fashion of step-wise increasing stress, to determine three dimensional strain of the missile structure.

Abstract: A gyro platform assembly for determining a drift rate of a sensing axis of first gyro, the sensing axis being fixedly aligned to a carrousel axis. The first gyro is on a plane of a first platform. The first platform is connected to a vehicle along the carrousel axis. The first platform has the plane and an opening. A second platform is connected to the first platform within the opening. The second gyro is on a surface of the second platform. The second platform is carrouselable around a carrousel axis that is perpendicular to the carrousel axis of the first platform. The second gyro has a sensing axis that is adjustibly aligned with the sensing axis of the first gyro. When the vehicle rotates, each sensing axis experiences the same rotation rate. Each sensing axis produces a signal that is the result of the rotation rate of the vehicle, and a sensing axis drift rate. The second platform is carrouseled 180 degrees and the sensing axis of its gyro produces another signal.

Abstract: A non-magnetic alloy of a volume Vcu of copper and a volume Vmn of manganese. Vmn/Vcu is made equal to -Xcu/Xmn where Xcu is the susceptibility of the copper and Xmn is the susceptibility of the manganese. Vmn/Vcu is experimentally predicted to be 1.04 percent by volume.

Abstract: The present invention relates to a method of resolving an ambiguity in the stimation of vertical velocity of a moving underwater or surface vehicle. Three acoustic pulses are successively transmitted. They are received by a series of detectors located on the vehicle. The time difference between correlated first and second received pulses is measured. The time different between correlated first and third received pulses is also measured. The phase shifts between the three transmitted pulses and three received pulses is measured. This information is used to determine the vertical velocity of the vehicle.

Abstract: The present invention relates to a method for protecting a space vehicle inst directed energy, and to the resultant thermally protected space vehicle.

Abstract: A method for making a non-magnetic alloy structure. Alloy samples are for by taking three volumes V1 of host matrix material having a first susceptibility X1 and adding to each of them one of three volumes V2, V3 and V4 of a magnetically compensating material having a second opposite susceptibility X2. The volume V3 is chosen so that (V1)(X1) =(V3)(X2). The volumes V2 and V4 are chosen so that V3/V1-V2/V1 is equal to 0.299 percent and V4/V1-V3/V1 is equal to 0.531 percent. The magnetizations of the alloy samples are determined and ploted as a function of their volume percentages. A volume percentage V5/V1 is determined from the plot, such that the volume percentage, V5/V1, has zero magnetization. This volume percentage V5/V1 is used to make nonmagnetic alloy structures having this volume percentage V5/V1.

Abstract: A protective circuit for protecting electrical equipment. The circuit has a eat sensor for sensing heat from the electrical equipment, an amplifier for amplifying the sensor voltage. The circuit also has a power supply, a heater, and drive transistor for conducting current from the power supply to the heater due to amplified sensor voltage on the drive transistor. The circuit further has a heat sensitive switch that has a switching temperature. The heat sensitive switch is between another power supply, for the electrical equipment, and the electrical equipment. The heat sensitive switch initially conducts electrical power to the electrical equipment. The switch will interrupt electrical power to the electrical equipment, after a selected rate of heat from the electrical equipment activates the circuit to cause the heater to produce a switching heat. This switching heat from the heater raises the temperature of the heat sensitive switch above its switching temperature.

Abstract: Apparatus and method for detecting a location of a break in a conductor of cable, the cable having a multiple number of conductors. The conductors that are not under investigation are connected to ground potential. The conductor that is under investigation is connected to a timer, a resistor, and a DC voltage source that in turn is connected to ground potential. Charging current flows into the conductor under investigation. The time that it takes for the current to decrease to (1/e) of the current's initial value is measured by the timer. Alternately, the conductor that is under investigation is connected to a resistor and a DC voltage source that in turn is connected to ground potential. This conductor is also connected to a voltage level timer that is connected to ground potential. The charging voltage of the conductor increases. The time that it takes for the charging voltage to increase to (1-1/e) of the voltage value of the DC voltage source, is measured by the timer.

Abstract: An array of nested sets of electromagnetic coils. Each set of two coils is useable both as Helmholtz coils and as deGaussing coils. In each set, the two coils are wound in the same direction and the two coils are on a common axis. The common axes of the three sets are mutually orthogonal. For each set of two coils, the outer two ends of the two coils are connected to two single terminals, while the inner two ends of the two coils are connected to one common terminal. By connecting one side of a DC power supply to one single terminal, and by connecting the other side of the DC power supply to the other single terminal, each set of two coils will operate as Helmholtz coils. By connecting one side of a DC power supply to parallel variable resistors, each resistor in turn being connected to a single terminal, and by connecting the other side of the DC power supply to the common terminal, each set of two coils will operate as deGaussing coils.

Abstract: An improvement in a coprocessor system for correcting for drifts in directions of navigation gyros, by means of satellite navigation information from global positioning satellites. Values of gyro navigation information from the gyros are interpolated to values that are valid at a cycle time. A cycle time is a time when the satellite navigation information is valid. The interpolated gyro navigation information is coprocessed with the satellite navigation information to arrive at accurate gyro drift terms. The gyro drift terms are used in correcting for the drifts in the navigation gyros.

Abstract: A probing system for determining a voltage at a node during normal operation of a circuit. An input driver drives the circuit normally. A normal output on an output line associated with the node, is recorded. A probe is brought in contact with the node. Various node voltages are applied to the probe and thus to the node, until the output on the output line matches the recorded output. The probe voltage that creates the match is the voltage at the node, during normal operation of circuit.

Abstract: A position and velocity determining system, that uses two functioned receiver-transmitters. In performing a first function, each receiver-transmitter transmits an acoustic pulse at a unique frequency, in response to a first received accoustic pulse. In performing a second function, each receiver-transmitter transmits a continuous acoustic signal at a unique frequency, in response to a second received acoustic pulse.

Abstract: A transponder that responds differently to two different input signals. The first input signal is at a first frequency. The first input signal is detected by a first powered detector that operates at the first frequency. The transponder responses in a first mode to the first input signal. The second input signal consists of short pulses at the first frequency and at a second frequency. The transponder responds to short pulses at the first frequency by powering a second detector. The first and second detectors then detect the second input signal. The transponder responds in a second mode to the second input signal.

Abstract: A light emitting diode lamp that operates directly from an AC input. The lamp has an even number of light emitting diodes that are disposed on a cylindrical cluster plate. The diodes are separated into two halves that are conductable in opposite electrical directions. The two halves of diodes are connected at two terminals. The diodes are arranged in a circular configuration near the edge of the circular cluster plate. Leads are connected to the terminals. The leads extend toward the center of the circular configuration and extend through the cluster plate. A modifying resistor is connected between one lead and an end terminal of a lamp housing. The other lead is connected to a base terminal of the lamp housing.

Abstract: A deflectable trunnion assembly that has a deflectable eye member or hook. The trunnion assembly is connectable to a pulley block of a hoist. The trunnion assembly has a trunnion block on which a deflectable spherical roller thrust bearing rides. The eye member rides on the spherical roller thrust bearing. The trunnion block is covered by a cover that contains a dome. The eye member ends in a pin that has a balled end. The balled end of the pin rotates within the dome, during deflection within the spherical roller thrust bearing of the trunnion assembly.

Abstract: A two pole viad chip capacitor that is activatable from either of its sides having a plurality of ceramic layers in a stack, each and every layer having only two vias, a first via in a first region of each layer and a second via in a second region of each layer; a first conductor in each of the first vias; a second conductor in each of the second vias; a stack of first capacitor plates being on first alternate ceramic layers and each first plate being in electrical contact with a first conductor; and a stack of second capacitor plates, the second plates being on second alternate ceramic layers that are interdigitated with the first alternate ceramic layers and in electrical contact with a second conductor.

Abstract: A method of determining long term power variation, as an indication of long term stability of power output, by steps of measuring power output at successive intervals of time, determining variations in power output, from an average power output, at corresponding intervals of time, making a Fourier transform of each variation in power output, calculating a power spectral density from each Fourier transform, plotting a log of each power spectral density, extrapolating the plot to find a value, designated as a log of a power spectral density, from the plot, calculating a power spectral density from the found value of the log of the power spectral density, and making an inverse Fourier transform of the calculated power spectral density, to determine the long term power variation.