| Patent Number |
Title Of Patent |
Date Issued |
| 5102299 |
Airfoil trailing edge cooling configuration |
April 7, 1992 |
| An airfoil includes a plurality of interior cooling air paths arranged so as to provide crossover metering and pressure side bleed of cooling air at the trailing edge region of the airfoil. |
| 5102218 |
Target-aerosol discrimination by means of digital signal processing |
April 7, 1992 |
| For all-weather active optical proximity sensors, the technique extracts a proper target signal from the mixture of target and aerosol returns. A waveform extraction method and a spectral extraction technique are used. The waveform extraction method examines the changes of the mixed sign |
| 5102049 |
Vane control mechanism |
April 7, 1992 |
| A thrust reverser in a two dimensional jet engine exhaust nozzle employs a plurality of reverser apparati that maintain a constant flow throat area, for example, in the reverse throat mode. A single reverser apparatus includes an actuator that operates through a lever upon linkage and a |
| 5101656 |
Method and apparatus for oxygen concentration analysis |
April 7, 1992 |
| The oxygen concentration of a gas mixture primarily of oxygen, nitrogen, and argon is determined by measurement of the shell side flow through a hollow fiber permeable membrane module having a tube side and a shell side. A sample of the gas at a low pressure is applied via a gas regulato |
| 5101560 |
Method for making an anisotropic heat pipe and wick |
April 7, 1992 |
| A method for making an anisotropic or predominantly unidirectional wick primarily for use in heat pipes is disclosed unidirectional heat pipe wicks is made by supporting magnetically susceptible particles on a wire screen and moving the screen inside a magnetic field until the charac |
| 5101455 |
Recirculating binary fiberoptic delay line apparatus for time steering |
March 31, 1992 |
| A recirculating binary fiberoptic delay line apparatus having a programmable optical delay line to delay multiplexed optical signals which are at different wavelengths. An optical demultiplexer separates the delayed multiplexed signals according to wavelength and provides two portion |
| 5101209 |
Jam strobe resolution using a monopulse antenna |
March 31, 1992 |
| In a surveillance radar, a process is disclosed which can determine the angular positions of multiple jammers with the use of a monopulse agile beam antenna. It involves collecting and processing jammer data received via a monopulse antenna, in order to determine jammer location, and to |
| 5101173 |
Stored program controlled module amplifier bias and amplitude/phase compensation apparatus |
March 31, 1992 |
| A stored program amplifier compensation apparatus utilizing sensing elements to provide the operational states of an RF power amplifier to a controller processor unit which utilizes the operational data to provide a bias control signal to the RF power amplifier. Look-up tables which are |
| 5099243 |
Digital frequency measurement receiver with bandwidth improvement through multiple sampling of c |
March 24, 1992 |
| This is a technique for extending the frequency range which employs in-phase and quadrature components of the signal coupled with non-uniform sampling to gain the advantages of a high sampling rate with only a small increase in the number of samples. By shifting the phase of the local |
| 5099194 |
Digital frequency measurement receiver with bandwidth improvement through multiple sampling of r |
March 24, 1992 |
| This proposed approach to extending the frequency range uses non-uniform sampling to gain the advantages of a high sampling rate with only a modest increase in the number of samples. The basic idea is to use two sets of uniform samples with slightly different sampling frequency. Each set |
| 5098988 |
Crosslinkable rigid-rod benzobisazole copolymer |
March 24, 1992 |
| There are provided para-ordered aromatic heterocyclic copolymers having repeating groups of the following formulas: ##STR1## wherein a, b, c, d, and e are positive integers, each representing an average number of the respective different recurring units present in the repeating g |
| 5098987 |
Crosslinkable rigid-rod benzobisazole polymer |
March 24, 1992 |
| There are provided crosslinkable, para-ordered aromatic heterocyclic polymers having repeating groups of the following formula ##STR1## wherein Y is --O--, --S--, or --NH--, n is 1 or 2, and R is an alkyl group having 1 to 4 carbon atoms. In polymers having two pendant R groups, the |
| 5098650 |
Method to produce improved property titanium aluminide articles |
March 24, 1992 |
| A method for producing titamium alloy articles having a desired microstructure which comprises the steps of:(a) providing a prealloyed gamma titanium aluminide alloy powder;(b) filling a suitable die or mold with the powder;(c) consolidating the powder in the filled mold at a pressure of 30 Ksi |
| 5098484 |
Method for producing very fine microstructures in titanium aluminide alloy powder compacts |
March 24, 1992 |
| A method of producing titanium alloy articles having a desired microstructure which comprises the steps of:(a) providing a prealloyed titanium alloy powder;(b) filling a suitable die or mold with the powder;(c) hot isostatic press (HIP) consolidating the powder in the filled mold at a pressu |
| 5096789 |
Method and composition for chloroaluminate molten salts having a wide electrochemical window |
March 17, 1992 |
| Composition and method for preparing a chloroaluminate molten salt at room temperature having a wide electrochemical window is provided. The salts include aluminum chloride and an organic chloride salt combined in a mole ratio of about 1-1 and a sufficient amount of alkali metal chloride |
| 5095384 |
Laser damage resistant vanadium dioxide films |
March 10, 1992 |
| An optical device structure having enhanced resistance to damage by invasive laser radiation is described which comprises a thin layer of optical switching material, such as VO.sub.2, deposited onto a lattice matched substrate. A method for fabricating the structure is also described |
| 5095212 |
High-efficiency photon detector |
March 10, 1992 |
| High efficiency method of detecting incident photons including illuminating a laser driven gaseous vapor with electromagnetic radiation enabling the excitation of an atom of the vapor upon absorption of an incident photon by the atom, introducing the incident photons into the vapor which |
| 5095075 |
Thermoset rigid rod molecular composite system |
March 10, 1992 |
| Provided is a molecular composite comprising a rigid-rod aromatic heterocyclic polymer, a flexible, coil-like thermoplastic polymer and a thermosetting polymer.Also provided is a method for fabricating a molecular composite film or fiber which comprises the steps of forming a biphasic, s |
| 5095052 |
Low impulse coatings |
March 10, 1992 |
| The high sublimation energy of industrial diamond pigment is combined with the clean ablation properties of an epoxy or urethane binder. The result is a low impulse decoy coating that has the desired compatibility with the decoy heat shield materials, good radar transmission, and a neutr |
| 5093639 |
Electromagnetic stripline coupler apparatus |
March 3, 1992 |
| An electromagnetic stripline coupler apparatus having a pair of coupler units which are separated by a conductive ground plane with a slot in it that is aligned to pass signal energy between the coupler units. |
| 5093388 |
Very high friction eleastomer formulation for use in static braking applications |
March 3, 1992 |
| A high friction brake shoe formulation having a high static friction coefficient in shear of about 1.5 and low adhesion to materials having microscopic pores therein in contact with said brake shoe formulation which comprises a mixture of about 75 phr of neoprene W rubber and about 2 |
| 5092735 |
Blade outer air seal cooling system |
March 3, 1992 |
| An improved blade outer air cooling system for aircraft jet engines is disclosed. An integrated substrate backplate, cooling impingement plate and manifold replaces a conventional substrate backplate supporting a seal surface. A cooling impingement plate is mounted on the back of the |
| 5092425 |
Jet noise suppressor and method |
March 3, 1992 |
| An apparatus for and method of suppressing noise generated by the primary exhaust gas flow from jet engine nozzles or the like without significantly affecting thrust. A secondary jet stream is provided exteriorly of the primary exhaust gas flow for interacting at the boundary between the |
| 5089929 |
Retrofit integrated circuit terminal protection device |
February 18, 1992 |
| The RICTPD device is designed to protect integrated circuits with external leads on the sides of the case from electrical transients caused by lightning, switching inductive loads such as electrical motors, or other sources. The RICTPD is usually used when a particular IC is identified a |
| 5089385 |
Method of culturing cells in a flow-through cell cultivation system |
February 18, 1992 |
| 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 |
| 5087719 |
Dehydrogenative polymerization of silanes to polysilanes by catalysts of transition-metal silyl |
February 11, 1992 |
| A mechanism for the dehydrogenative polymerization of silanes to polysilanes is proposed, based on studies with zirconocene and hafnocene catalysts. This is a new polymerization mechanism, based on metal-mediated step-growth of the polymer. Key features of the mechanism are: 1) Coord |
| 5086120 |
Ionically blended molecular composites |
February 4, 1992 |
| A molecular composite system consisting essentially of a para-oriented benzobisazole polymer and a matrix polymer, poly(2-acrylamido-2-methylpropanesulfonic acid). |
| 5085559 |
Composite vane |
February 4, 1992 |
| Metal darts are captured either in bonded assembly or in riveted assembly with composite airfoil skins. The darts have a thin fin extending rearward with a dam at its rear end forming a hot air duct on either side of the fin. As hot compressor bleed air is diverted down through the fin d |
| 5085381 |
Deployable aerodynamic aerosurface |
February 4, 1992 |
| An apparatus for and method of depolying a movable aerosurface of an aerial vehicle from a folded position to an unfolded, operative flight position. The aerosurface, such as a fin for example, includes a pivotal base member and a control surface connected to the base member for movement |
| 5081865 |
Center of gravity locating method |
January 21, 1992 |
| A system is provided for determining the center of gravity of a body by providing a balance arm supported from a single pivot point, then positioning the body on the balance arm and measuring the rotation of the balance arm in two orthogonal planes. A disturbance weight is then added |
| 5080739 |
Method for making a beam splitter and partially transmitting normal-incidence mirrors for soft x |
January 14, 1992 |
| A method is disclosed for making free standing multilayer films by depositing the films on a soluble substrate. The substrate solvent combination is chosen so that the solvent will not effect the multilayer materials. After deposition on the substrate, the multilayer films are cement |
| 5078042 |
Electromagnetic rail gun |
January 7, 1992 |
| A quad armature electromagnetic rail gun uses four conducting rails, in a quadri-pole configuration, with four sliding armatures to propel projectiles. Two of the four conducting rails are positive, and receive one-half of the operating current. The four sliding armatures are slidably |
| 5077747 |
Alignment-insensitive method for wideband tuning of an unmodified semiconductor laser |
December 31, 1991 |
| Using simple optical components and an unmodified commercial off-the-shelf semiconductor laser, a frequency-selective self-aligning optical-feedback technique has been devised that allows a semiconductor laser to be tuned to and scanned about any optical frequency within the laser gain c |
| 5075856 |
System for modelling low resolution atmospheric propagation |
December 24, 1991 |
| LOWTRAN 7 is a low-resolution propagation model and computer code for predicting atmospheric transmittance and background radiance from 0 to 50,000 cm.sup.- at a resolution of 20 cm.sup.-. The code is based on the LOWTRAN 6 (1983) model with a number of improvements. Multiple scattered |
| 5074925 |
Thermomechanical fabrication of net shape single crystal airfoils |
December 24, 1991 |
| A thermomechanical method for fabricating net shape single crystal airfoils is disclosed. A cast single crystal superalloy workpiece is solution heat treated to provide a homogeneous gamma prime distrubition. The single crystal sheet stock is then warm worked, generally forged or rolled, |
| 5073006 |
Compact 2f optical correlator |
December 17, 1991 |
| A 2f Fourier transform optical correlator uses two simple, single element lenses, with the second lens performing both quadratic phase term removal and the inverse Fourier transform operation in a compact two-focal-length space. This correlator performs correlations quite well and uses t |
| 5072554 |
Prefabricated modular storage building |
December 17, 1991 |
| A prefabricated modular building is constructed of a plurality of panels which are readily assembled and locked together without the need for tools (other than material handling and earth moving equipment) at the assembly site. The building is constructed of sets of panels, most of the p |
| 5071770 |
Method for gaseous component indentification with #3 polymeric film |
December 10, 1991 |
| A sensor having an interdigitated gate electrode field effect transistor (IGEFET) coupled to an electron beam evaporated copper phthalocyanine thin film is used to selectively detect parts-per-billion concentration levels of atmosphere contaminants such as nitrogen dioxide (NO.sub.2) and |
| 5071231 |
Bidirectional spatial light modulator for neural network computers |
December 10, 1991 |
| Digital data processing unit includes two SLMs assembled back-to-back with a common photoreceptor, to form a bidirectional spatial light modulator (BSLM) which facilitates the flow of data in the forward and reverse directions. An image can be written from the left side of the BSLM and |
| 5071061 |
Reusable routing pouch |
December 10, 1991 |
| A pair of improved reusable routing pouches, or envelopes, are disclosed. The first routing pouch includes a single address block made of erasable material which can be covered by a transparent portion of the pouch closure flap. Addresses can be easily written and then erased by wiping s |
| 5070603 |
Method of separating multi-layer printed circuit wiring boards |
December 10, 1991 |
| A method of separating/splitting multi-layer printed circuit wiring boards by immersing the board and the blade of a surgical knife into liquid nitrogen to lower their temperatures to that of the liquid nitrogen thereby altering the holding properties of the adhesive material between |
| 5070538 |
Wide band domino effect high voltage regulator |
December 3, 1991 |
| The high voltage regulator employs a field effect transistor (FET) amplifier and a wide band frequency compensated RC voltage divider. The device comprises a FET amplifier used as a current source in a 20 KV power supply. The negative output of the supply is sensed by a voltage divider |
| 5070304 |
Distributed combiner power amplifier and method |
December 3, 1991 |
| An improved distributed amplifier usable, for example, in the gigahertz frequency range for radar and electronic warfare applications is disclosed. In the amplifier stage a combination of optimum amplifier stage loading, a reflection cancelling output network, and an amplifier capaci |
| 5070239 |
Night vision goggle ambient illumination testing |
December 3, 1991 |
| A night vision goggle capability evaluation apparatus useful in assessing the degree of illumination present in a proposed NVG operating environment is disclosed. The evaluation apparatus includes portable illuminator and detector devices that are battery operated and optionally coupled |
| 5067988 |
Low temperature hydrogenation of gamma titanium aluminide |
November 26, 1991 |
| A method for refining the microstructure and enhancing the processability of titanium aluminum alloys containing about 45 to 55 atomic percent aluminum which comprises the steps of:(a) rapidly solidifying a titanium aluminum alloy containing about 45 to 55 atomic percent aluminum to prov |
| 5067985 |
Back-contact vertical-junction solar cell and method |
November 26, 1991 |
| An interdigitated back-contact vertical-junction solar cell which utilizes an anisotropically etched 110-oriented silicon crystal wafer. The cell structure includes rounded corner top edges of the between cell channel walls in order to improve light capturing ability and also has pn- |
| 5066769 |
Crosslinkable rigid-rod aromatic heterocyclic polymer |
November 19, 1991 |
| There is provided a para-ordered, rigid-rod aromatic heterocyclic copolymer having repeating groups of the formula:wherein x has a value of 0.50 to 0.99, Fl is a 2,7-fluorene moiety, Ar is a para-ordered arylene group and Ba is a benzazole group of the formula: ##STR1## wherein Y is |
| 5064590 |
Method of forming an ultra-thin nonlinear optical film |
November 12, 1991 |
| A method of producing a nonlinear optical film from a lyotropic liquid crystalline polymer by diluting the polymer with a dopant to form a concentrated mixture. The concentrated mixture is filtered in a high pressure filtration cell and vacuum degassed. Thin film are formed on plates |
| 5063661 |
Method of fabricating a split compressor case |
November 12, 1991 |
| A method for fabricating a split compressor case for a gas turbine engine is described which comprises the steps of assembling the two axial sections of the split case along corresponding flanges of the sections with a flat shim disposed between corresponding flanges and machining this |
| 5063385 |
Radar warning receiver compressed memory histogrammer |
November 5, 1991 |
| A memory system for histogramming the pulse descriptor word output of a radar warning receiver for initial processing of the received data for quickly determining the numbers and types of emitters in the system's environment. The disclosed apparatus histograms the number of pulses re |
