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: In a dynamoelectric machine having a housing, a rotatable commutator within the housing, a brush contacting the commutator, an electrically conductive brush holder affixed to the housing and supporting the brush, a brush pigtail connected to the brush, an electrical conductor connected to the pigtail at a junction, and a flange extending from the brush holder, the flange having a hole formed therethrough and spaced opposite first and second surfaces, a support device extends from the flange and passes through the hole for supporting the junction of the pigtail and the conductor. The support device includes a first insulator which electrically isolates the junction from the flange at the first surface of the flange. A second insulator electrically isolates the junction from the flange at the second surface of the flange. A third insulator electrically isolates the junction from the flange in the hole.

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 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: 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: 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: 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.

Abstract: Apparatus and method for determining the steady state flow resistance of face sheets on fully assembled acoustic duct liners. Resistance is measured by subjecting the liner to a sinusoidal acoustic pressure field at the face sheet surface. The pressure field is applied through a cylindrical waveguide and is measured by a pressure transducer flush mounted on the inside of the waveguide near the liner face. A second pressure measurement, obtained by a similar transducer positioned further from the face, is combined with the first measurement to calculate the acoustic resistance for the excitation frequency. If the excitation frequency coincides with the resonant frequency of the liner configuration, then no significant pressure exists on the back surface of the liner face sheet. For this condition the root mean square (rms) pressure measured at the face sheet is equated to the static pressure drop used to obtain the steady state flow resistance.

Abstract: Antenna apparatus for changing the antenna radiation pattern includes a transmitter and first and second antenna members. Each antenna member has a plurality of antenna elements which are arranged such that the elements of each antenna member are exponentially amplitude fed. A directional coupler responsive to the transmitter divides the power from the transmitter between the first and second antenna members such that each antenna member is provided with a signal of equal amplitude and phase. A variable phase shifter connected between the directional coupler and one of the antenna members is selectively operable either at 0.degree., or at a predetermined value in the range of about 60.degree. to 120.degree.. A symmetrical pencil beam pattern is provided when the variable phase shifter is set at 0.degree., and a cosecant squared pattern is provided when the variable phase shifter is set at a value in the range of about 60.degree. to 120.degree..

Abstract: An antenna array which may be conformally mounted in an aircraft includes a plurality of non-parasitic antenna drivers. A conductive member serves as a ground plane and reflector. Each non-parasitic driver is coupled to an energy transformer, such as a receiver, by an energy conductor, such as a balun, which supports the element in spaced parallel relation with respect to the conductive member. The energy transformers are releasably secured to the conductive member, which preferably is formed of a plurality of portions, each portion having attached thereto a group of the energy transformers. The antenna array is formed by a series of modules including a portion of the conductive member with its attached energy transformers. The modules form a wing leading edge radome that is hinged to the aircraft along a longitudinal edge of the radome to permit easy access for servicing. The conductive member in each module has a slot for each driver to permit replacement of antenna driver/energy transformer assemblies.

Abstract: Diffusion bonding of surface layers of an alloy, such as an aluminum alloy, having surface oxides of low solubility in the alloy includes treating the surface layers to be bonded to remove existing surface oxide coatings, and diffusion bonding the surface layers to one another by placing the alloy to be bonded under sufficient pressure to cause disruption of the oxide coatings by localized surface deformation of the alloy, enhanced by a superplastic microstructure, without substantial deformation of the alloy, i.e., macroscopic deformation approaching zero percent, while heating the alloy in a non-oxidizing atmosphere for a time sufficient for diffusion bonding to occur. The alloy may be treated so that at least the surface layers thereof have a fine grain structure of the type associated with superplastic forming properties. Components may be formed by diffusion bonding and superplastic forming.

Abstract: A circuit useful as an edge detector or pulse width encoder which receives an input signal and supplies a logic output signal includes a delay and inverting circuit for logically inverting and delaying input signals so as to supply a delayed and inverted signal or pulse. The circuit also includes a gate having a first input for receiving the input signal and a second input for receiving the delayed and inverted pulse. The gate provides a logic output signal whenever the input pulse signal and the delayed and inverted output pulse are at different logic levels. The circuit may be expanded with additional circuit elements including a delay circuit for delaying the input signal and an additional gate having an input for receiving the logic output signal and an output connected to the input of the delay circuit. The expanded circuit oscillates at a frequency which varies in response to the delays in the circuit.

Abstract: An arrangement that uses aircraft fuel as a heat sink for aircraft auxiliary oil systems for an aircraft having at least one engine operated by fuel and having an engine interface limit and including a fuel/oil heat exchanger for removing heat from the aircraft auxiliary oil systems and having a fuel outlet temperature, a temperature sensing for determining temperature of the fuel leaving the fuel/oil heat exchanger, a recirculating flow control valve having variable positions including an open and a closed position controlled by the temperature sensor, the fuel always going to the aircraft engine but also going through the flow control valve when the flow control valve is in the open position so that recirculation is minimized and maximum heat is rejected to the engine by the fuel outlet temperature of the fuel/oil heat exchanger when the fuel outlet temperature of the fuel/oil heat exchanger is controlled by the engine interface limit, a ram air heat exchanger for removing heat from the fuel leaving the rec

Abstract: A clamping device for setting a detail which has at least one oversized throughbore to a fixture base which has at least one threaded throughbore, the clamping device has six degrees of freedom, a longitudinally adjustable body portion which has an upper threaded portion and a lower threaded portion and is fixed in space so as to form a firm point for longitudinal rotation eliminating bending of the body portion during the setting, a flange disposed on the body portion which separates the upper threaded portion from the lower threaded portion, and a clamping arrangement disposed on the upper threaded portion of the body portion which provides single load line jacking and clamping to adjust and hold the detail in position with relation to the fixture base so that lock-up of the clamping device and the detail is prevented.

Abstract: A computer image generation system is described which models objects without the necessity of linear edges. The system is adaptable for dynamic (real time) image generation from a compact model base for use in, for example, flight training systems. Scene content is enhanced by a novel texture generator. The system is designed for use with standard video display equipment.

Abstract: A supercritical movable airfoil over which is blown air to obtain a Coanda affect. A sealing strip is provided on a stationary airfoil portion which seals against the movable airfoil portion during blowing to prevent flow of air therebetween.