| Patent Number |
Title Of Patent |
Date Issued |
| 5062767 |
Segmented composite inner shrouds |
November 5, 1991 |
| A shroud for supporting the vanes in the hot sections of a gas turbine engine is comprised of composite segments retained in a metal ring. The metal ring has a positive coefficient of expansion, while the segments have a zero (or much smaller) coefficient. When the ring is heated and |
| 5062594 |
Flight control system with tactile feedback |
November 5, 1991 |
| A control system for an aircraft or other man-machine system wherein the usual visual feedback system is characterized and is optimally supplemented by a secondary feel oriented feedback arrangement in which input signals are derived from either of two supplementary feedback signal s |
| 5061934 |
Hybrid clutter cancellation method and system for improved radar performance |
October 29, 1991 |
| A system is disclosed for use with radar systems so as to reduce the dynamic range requirement of the analog to digital converter through analog clutter cancellation prior to digitization. Clutter return estimates are formulated via modern digital signal processing techniques, conver |
| 5060472 |
Insulated cooling liner |
October 29, 1991 |
| This disclosure is for a liner for the exit nozzle of a gas turbine engine. The liner is double walled liner with insulation material between the walls, and with a plurality of tubes extending through the walls and the insulation. Primary cooling is accomplished by film cooling through t |
| 5060245 |
Interline transfer CCD image sensing apparatus |
October 22, 1991 |
| In interline transfer type image sensing devices, photogenerated charge is transferred from a collection node into a charge coupled shift register. The framing rate of these detectors is typically limited by the maximum readout rate of the shift register. A CCD image sensing device with |
| 5059023 |
Angular deviation measurement system |
October 22, 1991 |
| A system for measuring optical angular deviation in a transparency such as an aircraft or automobile windscreen, visor, optical lens or the like is described wherein orthogonal first and second incoherent light line images are combined and separately optically encoded, such as by wavelen |
| 5056915 |
Fiber optic calibration standard apparatus |
October 15, 1991 |
| A fiber optic calibration standard apparatus having a fiber optic cable pair which have difference in length of one quarter the wavelength of the applied modulated signal and are coupled to a mirrored reflecting surface to provide reflection reference signals that are utilized to generat |
| 5056307 |
Exhaust nozzle cooling utilizing total engine flow |
October 15, 1991 |
| This disclosure describes an arrangement for cooling the exhaust nozzle of a gas turbine engine by selectively diverting the unheated total engine air flow directly to the exhaust nozzle of the engine. After the total air flow impinges on the back surface of the exhaust nozzle to rapidly |
| 5055741 |
Liquid coolant for high power microwave excited plasma tubes |
October 8, 1991 |
| A coolant system for a high power microwave excited plasma tube is described which comprises liquid dimethyl polysiloxane in a coolant system structure for flowing the liquid into contact with the plasma tube, the system structure comprising metallic or hard plastic materials. |
| 5054399 |
Bomb or ordnance with internal shock attenuation barrier |
October 8, 1991 |
| An ordnance or munition casing is described which comprises a hollow outer casing having a shock attenuating inner liner made from successive layers of material of inwardly decreasing acoustic impedance. The inner liner reduces the sensitivity of the munition to sympathetic detonation an |
| 5051582 |
Method for the production of size, structure and composition of specific-cluster ions |
September 24, 1991 |
| The method of producing specific cluster ions utilizing an ionization source to produce ions which are then sorted or resolved according to velocity and mass. The selected ions are passed through a growth chamber containing a gaseous vapor of a specified element and are coated by the |
| 5050989 |
Single Hadamard mask spectrograph system |
September 24, 1991 |
| A Hadamard mask is placed in the entrance plane of a standard flat field grating spectrograph. A planar array is used as the detector. The Hadamard mask contains 2n-1 elements, where n is the number of elements in the detector array. This configuration produces a spectrograph with a wide |
| 5050976 |
Hub and petal apparatus for mosaic mirrors and millimeter wave antennas |
September 24, 1991 |
| A mirror or antenna apparatus having individual petal segments, each of a complex shape, mated with a central hub assembly. Registration pads are provided on the hub assembly to align the petal segments with respect to the hub and each other. Electrical actuators provide fine tuning |
| 5046707 |
Spherical positioning pin |
September 10, 1991 |
| The datum line establishing tool provides an improved method for deriving an accurate datum line on Printed Circuit Boards (PCB) and other similar assemblies without the need for having close tolerance PCB index holes and base tool pins. The datum line establishing tool includes a tool b |
| 5045801 |
Metastable tolerant asynchronous interface |
September 3, 1991 |
| The interface circuit passes data from a first unit running at one clock rate to a second unit running at another clock rate. READY leads from an In control circuuit to an Out control circuit are used to signal when a data word has been loaded by the first unit; and TAKEN leads from the |
| 5045701 |
Infrared spectropolarimeter |
September 3, 1991 |
| An infrared spectropolarimeter system for making spectroscopic measurements of electro-optic properties of materials over a large wavelength range in the infrared is described which comprises in combination a spectrometer having a sample region for receiving a sample for making spectrosc |
| 5044714 |
Variable interval electromagnetic pulse train generator |
September 3, 1991 |
| A variable interval electromagnetic pulse train generator having a semiconductor substrate on which is mounted on one surface thereof a plurality of spaced apart electrodes and on another surface thereof an electrode base plate. A voltage source is connected to each of the plurality |
| 5044712 |
Waveguided electrooptic switches using ferroelectric liquid crystals |
September 3, 1991 |
| A tiny, high speed, low cost electrooptic switch is provided having co-planar waveguides of silicon oxynitride and a ferro-electric liquid crystal layer overlying the waveguides. A voltage source causes the molecular optic axis of the liquid crystal to rotate 45-90 degrees within the |
| 5044129 |
Cryogenic mechanical means of paint removal |
September 3, 1991 |
| A method for cryogenic removal of paint and other surface coatings is disclosed. Alternate stream pulses of a cryogenic fluid and abrasive beads are directed at a surface coating to alternately embrittle and then shatter the coating. The pulse durations and the time intervals between |
| 5041531 |
Telechelic polymerization of epichlorohydrin |
August 20, 1991 |
| A process for preparing polyepichlorohydrin which comprises polymerizing epichlorohydrin in the presence of a catalytic amount of 1,4-butaneditriflate. The resulting polymer can have a molecular weight of about 5,000 to about 15,000. The polymer is telechelic. It can be terminated wi |
| 5041522 |
Dihydroxy-pendant rigid-rod benzobisazole polymer |
August 20, 1991 |
| There are provided novel rod-like heterocyclic aromatic polymers having repeating groups of the formula: ##STR1## wherein Y is --S--, --O-- or --NR--, R is --H, an alkyl group having 1 to 4 carbon atoms or an aromatic group having 1 or 2 aromatic rings, and the bullet symbol (.cn |
| 5040815 |
Tractor-trailer connection for uneven terrain travel |
August 20, 1991 |
| A gooseneck structure is coupled to a tractor via a spherical bearing which compensates for pitch, roll and yaw motions and is coupled to support brackets upon the trailer via a horizontal support beam positioned at the underside of the support brackets. Air bag lifting actuators cause t |
| 5040336 |
Non-contact polishing |
August 20, 1991 |
| A non-contact polishing apparatus is used for polishing semiconductor planar substances. The substrate is set back from any surface and is held by a chuck fixed within a collar. This substrate holder assembly is placed within an enclosed container that has a non-abrasive solution therein |
| 5040140 |
Single SLM joint transform correaltors |
August 13, 1991 |
| A simple, low cost, high performance joint Fourier transform correlator, which requires only a single spatial light modulator, is disclosed. Input and reference images are recorded upon a single phase modulating SLM, and a lens produces a first joint Fourier transform of the images upon |
| 5039778 |
Dihydroxy-pendant rigid-rod benzobisazole copolymer |
August 13, 1991 |
| There are provided novel rod-like heterocyclic aromatic copolymers having repeating groups of the formula: ##STR1## wherein n has a value of 0.01 to 0.50, wherein Ar is a para-oriented aromatic group and Q is an aromatic heterocyclic group of the formula: ##STR2## wherein Y i |
| 5039562 |
Method and apparatus for cooling high temperature ceramic turbine blade portions |
August 13, 1991 |
| An array of skewed cooling air conduits are embedded within a ceramic turbine blade for cooling an upper blade surface by producing a cool air film thereon, and by removing heat through conduction. The conduits provide a large bonding surface area in the ceramic, and are recessed to |
| 5039475 |
Thermionic fuel element pressure vessel |
August 13, 1991 |
| A pressure vessel for nuclear energy powered thermionic fuel elements is disclosed. An inner cylindrical nuclear fuel heat source is surrounded by cylindrical layers of, in outward order, an emitter, a gap, a collector, an insulator and a cladding layer. A hexagonal pressure vessel surro |
| 5039356 |
Method to produce fatigue resistant axisymmetric titanium alloy components |
August 13, 1991 |
| An improved process for producing near-alpha and alpha+beta titanium alloy axisymmetric components with high fatigue resistance which comprises the steps of:(a) providing a beta processed near-alpha or alpha+beta titanium alloy component;(b) torque deforming the component; and(c) alpha+b |
| 5039210 |
Extended dynamic range one dimensional spatial light modulator |
August 13, 1991 |
| An optical information system which uses a liquid crystal television (LCTV) as a one dimensional spatial light modulator (SLM) is presented. An optical carrier wave is generated by polarizing and collimating the output of a laser. The liquid crystal television modulates the optical carri |
| 5038295 |
Solid propellant service life analysis via nondestructive testing |
August 6, 1991 |
| A process for determining the aging characteristics of solid rocket propellant samples by measuring their dynamic mechanical properties is disclosed. Samples of rocket propellant are tested using a mechanical spectrometer at low strain levels and low frequencies. Since the dynamic st |
| 5037171 |
Optical fiber coupling structure |
August 6, 1991 |
| A novel optical fiber structure is described which includes an end thereof for transmitting optical signals and substantially reducing reflections of optical signals thereat wherein the fiber end has a substantially flat end surface disposed at an angle to a plane perpendicular to the tr |
| 5036905 |
High efficiency heat exchanger |
August 6, 1991 |
| A high efficiency deployable heat radiator system for radiating heat generated at a source of heat aboard an orbiting spacecraft or like vehicle is described which comprises a first subsystem for circulating liquid heat exchange medium into heat exchange relationship with the heat so |
| 5036770 |
ACS blowoff door assembly |
August 6, 1991 |
| A protective door assembly is disclosed which will cover missile altitude control system engines during storage and launch while still being easily jettisoned when the ACS engine is fired. The titanium door attaches to the missile skin by a hook on it's lower edge and by a tapered boss w |
| 5036696 |
Method for measuring fracture toughness of brittle media |
August 6, 1991 |
| A method for measuring fracture toughness of a brittle material is described which comprises the steps of impacting a sample of the material of preselected thickness and predetermined density and characteristic ultrasonic wave velocity C.sub.i at preselected velocity with a projectile |
| 5033103 |
Model of the lateral inhibition, energy normalization, and noise suppression processes in the re |
July 16, 1991 |
| A digital image processing system is disclosed that uses a camera, a monitor and a computer which models the inhibition, energy normalization, and noise suppression processes in a generic retina. The retinal computer program enhances edges, eliminates brightness variations in a scene for |
| 5032189 |
Method for refining the microstructure of beta processed ingot metallurgy titanium alloy article |
July 16, 1991 |
| Near-alpha and alpha+beta titanium alloy components are produced by a process which comprises the steps of forging an alloy billet to a desired shape at a temperature at or above the beta-transus temperature of the alloy to provide a forged component, heat treating the forged component a |
| 5030592 |
Highly dense cordierite and method of manufacturing same |
July 9, 1991 |
| Compositionally triphasic nanocomposite gel is made by mixing two or more sols of ceramic precursor oxides. Such gel is then dried and ground to a fine powder which is pressed into compact bodies. The compact bodies are thereafter fired in a sintering oven at from 1100.degree. C. to |
| 5030277 |
Method and titanium aluminide matrix composite |
July 9, 1991 |
| A method for fabricating a titanium aluminide composite structure consisting of a filamentary material selected from the group consisting of silicon carbide, silicon carbide-coated boron, boron carbide-coated boron, titanium boride-coated silicon carbide and silicon-coated silicon carbid |
| 5030118 |
Retractable connector protective cover |
July 9, 1991 |
| An electrical socket cover is disclosed in a system which includes a pair of connector elements which may be electrically engaged, and a cover for protection of a first connector element when the first and second connector elements are disengaged. The first connector element is mounted |
| 5030060 |
Method and apparatus for cooling high temperature ceramic turbine blade portions |
July 9, 1991 |
| An array of skewed cooling air conduits are embedded within a ceramic turbine blade for cooling an upper blade surface by producing a cool air film thereon, and by removing heat through conduction. The conduits provide a large bonding surface area in the ceramic, and are recessed to |
| 5029440 |
Acoustical anti-icing system |
July 9, 1991 |
| Hollow inlet guide vanes in the air intake of a gas turbine engine are supplied with pressurized bleed air. The interior of the vanes are provided with orifices through which the bleed air must flow, and those orifices are tuned to a desired frequency which sets up vane vibrations. T |
| 5028541 |
Flow-through cell cultivation system |
July 2, 1991 |
| A flow-through cell cultivation apparatus and method is described. The flow-through cell cultivation system comprises a flowcell, a chamber inside the flowcell for holding cells, and a flowcell holder. The flowcell has a lower intake port for flowing liquid nutrient through a cellbed |
| 5026170 |
Optical heat flux gauge |
June 25, 1991 |
| A heat flux gauge comprising first and second thermographic phosphor layers separated by a layer of a thermal insulator wherein each thermographic layer comprises a plurality of respective thermographic phosphors. The gauge may be mounted on a surface with the first thermographic phospho |
| 5025224 |
Incremental integrator circuit |
June 18, 1991 |
| An incremental integrator integrates a signal from a previous time to the present time to obtain an average value for the signal. An input signal is applied to an analog integration circuit which performs a continuous integration of the input signal. A time delay circuit delays the outpu |
| 5025183 |
Electromagnetic actuator driver apparatus with pivot axis |
June 18, 1991 |
| An electromagnetic actuator driver apparatus having a bobbin with an electrical coil wound around the central portion thereof and positioned within a permanent magnetic generated flux field structure. A drive arm is engaged by bobbin fingers at the input end of the drive arm to deflect t |
| 5024369 |
Method to produce superplastically formed titanium alloy components |
June 18, 1991 |
| Processes for producing titanium alloy SPF/DB components, particularly structural panels, are provided.In one embodiment, the process comprises providing rapidly solidified titanium alloy sheetstock, providing a plurality of rapidly solidified titanium alloy ribbons or strips, forming th |
| 5023877 |
Miniature, optically pumped narrow line solid state laser |
June 11, 1991 |
| A miniature solid state laser is optically pumped by ultraviolet radiation produced by a surface or corona discharge. The device is monolithic in that both the optical pump and the active medium are contiguous to a base material which is optically transparent in the ultraviolet range. Th |
| 5023847 |
Boom event analyzer recorder |
June 11, 1991 |
| An analyzer recorder collects sonic boom information of supersonic aircraft and launch vehicles, for use to validate Environmental Impact Statements that contain supersonic aircraft activity. The device comprises a 16-bit microprocessor, a random access memory (RAM) storage, a data retri |
| 5022046 |
Narrowband/wideband packet data communication system |
June 4, 1991 |
| The best features of narrowband and wideband signaling are merged to provide a simple and reliable multiple-access network. This is done by transmitting the header of the packet using narrowband signaling coupled with an associated channel access protocol such as carrier-sense multip |
| 5021789 |
Real-time high resolution autofocus system in digital radar signal processors |
June 4, 1991 |
| This autofocus is a system for improving the image quality of an airborne Synthetic Aperture Radar (SAR), that is mechanized in the high-speed digital signal processors with some control capability from the operating console to perform on-line focusing, to provide a unique and superior |
