Abstract: An electronic blanking system having a plurality of inputs from a number of radio frequency transmitters and a plurality of outputs for supplying blanking pulses to receivers which are in proximity to the transmitters includes input circuitry for processing input pulses from the inputs to produce processed input signals. Timers alter the timing of the processed input signals as required to produce the needed blanking pulses. Matrix means are provided for routing each blanking pulse to the outputs. A processor controls each matrix to determine the routing. Output drivers supply the blanking pulses, at predetermined voltage levels, to the outputs. The processor also controls the timers to determine the manner in which the timing is altered. The timers includes at least one of a delay for delaying the processed input signals, a stretching circuit for increasing the length of the processed input signals, and a truncator for truncating the length of the processed input signals.

Abstract: A titanium face plate is perforated by laser drilling holes therethrough. A cellular core is positioned between a sound reflecting solid back plate and the face plate.

Abstract: An expandable racking system for trays or the like having at least one upright member, at least one tray slide member, and an interlock member for slidably connecting at least one tray slide member to at least one upright member so that the alignment of at least one tray slide member relative to at least one upright member is correct and the height of at least one tray slide member relative to said at least one upright member is initially adjustable to suit user needs.

Abstract: A hand held device for coating a fastener with a coating and which includes a first body with a free end and which defines a first chamber that is placeable over the fastener, apparatus for supplying the coating under a pressure to the first chamber for coating the fastener with the coating, a second body with a free end and which is disposed external to the first body so as to form a second chamber therebetween, the second body is rigidly attached to the first body and the free end of the second body is displaced a distance below the free end of the first body so as to form a passageway therebetween, and apparatus for reducing pressure in the second chamber, the reducing apparatus draws the coating from the first chamber where the fastener is initially coated with the coating from the supply apparatus through the passageway and into the second chamber which causes the second chamber to fill with the coating so that when the pressure of the supply apparatus is eliminated the coating is drawn back from the sec

Abstract: A system is described for locating faulty integrated circuits on a printed circuit card under the guidance of computer programmed in accordance with the circuit being tested. The disclosed system includes a current pulsing network allowing digital selection, as by the computer, of reference voltage levels at which current is injected into the circuit being tested.

Abstract: A data storage system comprises a plurality of bubble memory chips each having a major loop and minor loops. At least one of the minor loops of each chip is used to store bad loop data for its respective chip. A system controller controls operation of the bubble memory chips. The system controller includes a chip controller for controlling operation of the bubble memory chips and a random access memory for storing the bad loop data from all of the bubble memory chips, and for supplying bad loop data to the chip controller so that data is placed only on operative loops of the bubble memory chips. A data transfer bus is used for inputting and outputting data from the system controller to a host computer. The system includes a plurality of bubble memory cassettes, each cassette having a predetermined number. Control signals are provided to the bubble memory chips of bubble memory chips so that more than one bubble memory chip is used simultaneously.

Abstract: A wing structure for controlling hydrodynamic ram and which includes a substructure having a plurality of individual cells each with a respective boundary, a composite skin disposed on the substructure, and perforations disposed through the composite skin which define a plurality of sections in the composite skin such that each section of the plurality of sections of the composite skin is disposed within the confines of each respective boundary of each of the plurality of individual cells of the substructure so that each section of the plurality of sections of the composite skin forms a blow off panel for relieving pressure created by hydrodynamic ram in a respective individual cell of the plurality of individual cells of the substructure.

Abstract: An aircraft cowl, and in particular a translating cowl, used as a component of a thrust reverser, formed of at least one one-piece bondment cured in a single operation. Preferably, a one-piece inner bondment and a one-piece outer bondment fastened together at a joining region. The bondments have constant density cores and tapered closures. Acoustically absorbing materials are part of the lay up for one of the bondments and are integrally cured therein.

Abstract: A bus interface unit for interfacing a serial bit data bus to a parallel bit data handling system includes a receiver for acquiring serial data from the bus. A clock generates a clock signal at a frequency corresponding to frequency of bits in the serial data. A clock processor receives the serial data and the clock signal to generate a clock processor signal for processing the serial data. A serial to parallel converter responsive to the serial data and the clock processor signal converts the serial data to parallel bit data. An output driver provides the parallel bit data to the parallel bit data handling system. A frame check sequence tester responsive to the serial data and the clock signal provides a validity output signal when the frame check sequence is recognized by the tester. The tester includes a plurality of devices operating in parallel to increase speed. A serial to parallel converter converts data received from the parallel bit data handling device to serial form data.

Abstract: An improved radar system and technique are disclosed for use in detecting and tracking moving or stationary targets within the antenna field of view. Precise correction of doppler induced location errors is provided by the use of raw sensor data. Return signals are doppler processed, phase shifted and compared in a manner which preserves the angle of arrival of a moving target irrespective of the boresight direction. Stationary target return signals are constructively combined so as to augment the target signal gain independent of the antenna boresight direction.

Abstract: A method for performing a repair to a damaged area on a contoured section of a composite structure, including the steps of laying up a repair patch over the damaged area of the composite structure, installing a conformal thermocouple over the repair patch so that the conformal thermocouple is in direct communication with and completely conforms to the exact shape of the contour section so as to act as a vehicle for the transfer of heat and pressure to the repair patch, applying heat to the repair patch via the conformal thermocouple, applying pressure to the repair patch via the conformal thermocouple, and curing the repair patch.

Abstract: Apparatus for measuring the displacement of a member relative to a reference plane has a transmitter and a receiver spaced therefrom at a predetermined distance. A reference energy beam coaxially passes through a light diffraction grating having a ruled surface. The grating passes a zero order part of the beam through undeviated and diffracts a multiplicity of beams of first, second, third, and higher order, at constant angles with the zero order part, the angles varying with the frequency of the ruled surface of the grating. A coaxial sleeve movably mounts the light diffraction grating to provide a roll zero reference. The zero order part of the beam provides the zero reference for pitch and yaw and the first order beams provides zero reference for roll. The lines of the ruled surface of the grating have a frequency matching the predetermined distance.

Abstract: A method for performing a repair to a damaged area of a composite structure wherein an obstruction is in close proximity to the repair site, including the steps of laying up a first patch on the repair site on a first side of the composite structure, applying heat to the repair site via a second side of the composite structure which is opposite to the first side of the composite structure so that heat is conducted through the composite structure from the second side of the composite structure to the repair site on the first side of the composite structure, applying pressure to the repair site, and curing the first patch.

Abstract: An apparatus for simulating, in an engineering workstation (EW) environment, the operation of circuits or systems having analog and digital portions. Information concerning the system or circuit is acquired with input devices such as a keyboard or mouse with the aid of a display and schematic capture programs. An analog simulator and a digital simulator are present in the EW. A first data extraction program extracts selected analog data from the analog simulator. A first conversion program converts the selected analog data into digital values. A first data insertion program provides the digital values as input (forcing functions) to the digital simulator. A second data extraction program extracts selected digital analysis data from the digital simulator. A second conversion program converts the selected digital data to analog data. A second data insertion program supplies the analog data as input to the analog simulator.

Abstract: An aircraft empennage has a vertical stabilizer, a trailing edge fixed horizontal stabilizer rigidly attached to the aircraft and a movable leading edge elevator affixed to the aircraft. The elevator is movable through a high position and a low position relative to the horizontal stabilizer, thereby providing variable camber and incidence deflection and optimizing deflections while providing adequate power for all flight conditions.

Abstract: A convergent-divergent jet exhaust nozzle has an aft end with an exit area thereat and a throat area spaced from the exit area and forward thereof. The ratio of the exit to throat diameter is from 1.00 to 1.05. Each of two symmetrical blocker doors has an axis coincident with the axis of the nozzle. Each of the blocker doors has opposite forward and rear edges and a surface extending between the edges. Each of the blocker doors is pivotally mounted to pivot about a pivot axis transverse to the axis of the nozzle and disposed downstream of the engine in the nozzle. The pivot axes are in a plane intersected by the axis of the nozzle.

Abstract: Directional solidification of Bi and Mn compositions to produce magnetic single domain size MnBi particles with aligned morphologies followed by post heat treating and densification.

Abstract: Directional solidification of Bi and Mn compositions to produce magnetic single domain size MnBi particles with aligned morphologies.

Abstract: A backpack for a wearer in an aircraft has a rigid housing releasably storing equipment for bailing out of the wearer from the aircraft over land, water and all types of surfaces under all types of surface conditions and for survival of the wearer during, upon and after descent.