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Colored articles and compositions and methods for their fabrication
This invention provides improved methods and compositions for achieving material coloration using particle scattering. These coloration effects can be designed...
Bleed valve system
A bleed valve for use in a gas turbine engine is provided; the bleed valve may be used to relieve air pressure from a compressor stage of the engine. At normal...
Reduced start time for MEMS gyroscope
By applying a first value of voltage to a first side of a MEMS gyroscope and applying a second value of voltage to a second side of the MEMS gyroscope, the start...
Coupled micromachined structure
A suspended, coupled micromachined structure including two proof masses and multiple support arms configured to suspend the masses above a substrate and a...
Chromatic vignetting in lens systems
Methods and apparatus are provided for chromatic vignetting in lens systems. The apparatus includes a projection lens unit having an aperture stop, and a...
Graphics driver and method with time partitioning
A graphics driver and method is provided that facilitates graphics rendering time partitioning to provide improved resource allocation between multiple windows...
Multifunction keyboard for advanced cursor driven avionic flight decks
An aircraft display and control system generally includes a processor, a cursor control and selection device, a multifunction keyboard, an aeronautical...
Radar altimeter for helicopter load carrying operations
A radar altimeter for vehicles that operate with a load suspended underneath is described. The radar altimeter includes a transmitter configured to transmit...
Gas turbine engine starter-generator exciter starting system and method
including a capacitance circuit element
A rotating electrical machine, such as an aircraft starter-generator, that includes an exciter that has its stator windings supplied with electrical power from a...
Spring return actuator for a damper
An actuator including an electric motor driven by a drive circuit powered by a power source, and a load coupled to the electric motor. The actuator further...
System and method for retaining wedges in a rotor
A rotor with wedges and a method of retaining wedges in a rotor are disclosed. The rotor includes a shaft, first and second poles extending radially from the...
Polyethylene protective yarn
High strength polyethylene yarns useful in ballistic-resistant, cut-resistant and other applications, fabrics produced from these yarns and the methods by which...
Cabin pressure control method and apparatus using all-electric control
without outflow valve position feedback
A pressure control system including an inflow unit for admitting pressurized air into a cabin, an outflow unit including a motor for operating a valve to...
Gas flow control
An approach for gas flow control is achieved with an arrangement involving a sealed housing with relatively few components. According to an example embodiment, a...
Methods and systems for simultaneously fabricating multi-frequency MEMS
A method for providing micro-electromechanical systems (MEMS) devices with multiple motor frequencies and uniform motor-sense frequency separation is described....
Apparatus and method for removing remnant material from a bobbin
A bobbin stripper for cutting and stripping remnant material such as cable and wire from a bobbin drum. The bobbin stripper comprises a cutting head that...
Direct one-step synthesis of trifluoromethyl iodide
A catalytic one-step process for the production of CF.sub.3 I by reacting, preferably in the presence of a source of oxygen, a source of iodine with a reactant...
Sintered silicon nitride
Sintered silicon nitride products comprising predominantly .beta.-silicon nitride grains in combination with from about 0.1 to 30 mole % silicon carbide, and...
Profile based method for deriving a temperature setpoint using a `delta`
based on cross-indexing a received...
A method for adjusting a plurality of controlled subsystems in a building or plant that facilitates cooperative energy usage with a utility provider. By...
Method for forming a magnetic sensor that uses a Lorentz force and a
A method and apparatus for sensing a presence of a magnetic field and/or a magnitude of a magnetic flux density of the magnetic field. A direct-current voltage...
High effectiveness cooled turbine vane or blade
A robust multiple-walled, multi-pass, high cooling effectiveness cooled turbine vane or blade designed for ease of manufacturability, minimizes cooling flows on...
Thrust reverser system actuator having an integral torque limiter
A thrust reverser system actuator assembly is provided that includes a torque limiter to limit the number of torque that may be applied to the actuator assembly....
Differential compensated vapor sensor
Vapor sensing systems and methods are disclosed. An appliance such as a gas water heater, clothes dryer, and the like can be associated with a controller for...
Electronic map display declutter
Method, apparatus and program product are provided for controlling the number of symbols presented on an vehicle electronic map display by using a first...
Cabin awareness and warning system
A method for monitoring the security state of an aircraft cabin. The method includes surveiling the main cabin of an aircraft, monitoring radio frequencies...
Universal aircraft generator electrical bench test apparatus
An electrical test box is provided for selectively connecting a generator to one of a plurality of test devices where the generator has a plurality of circuits....
Multi-laser beam welding high strength superalloys
A method is provided for repairing degraded and/or eroded areas on gas turbine blades and vanes. The method is directed to turbine blades and vanes made of...
Supported catalyst systems
Disclosed are methods of producing supported organic catalyst systems which find particular use in polymerization reactions. The methods comprise generally, the...
Aircraft hydraulic fluid purification system and method
A system and method for storing and purifying used hydraulic fluid removed from an aircraft hydraulic fluid system includes a purification system that mounted on...
Redundant aperture lamp system
An aperture lamp system that facilitates improved reliability and performance in a display system is provided. The aperture lamp system provides improved...
Exhaust gas recirculation cooler with bypass flow
An EGR cooler comprises a cooling core having a plurality of passages for accommodating the flow of exhaust gas therethrough, an exhaust gas inlet chamber...
Particulate matter sensor
A sensor for detecting particulate matter in an exhaust stream of an engine. The sensor may be a spark-plug-like device having an extended center electrode...
Dual mode power unit having a combustor bypass system
A gas turbine engine integrates the functions of an auxiliary power unit (APU) with one or more functions of an ECS, and that is capable of operating in both an...
Methods of treating physical vapor deposition targets
The invention encompasses a method of treating a physical vapor deposition target. The target has a sputtering surface and a sidewall edge at a periphery of the...
Optical alignment detection system
An optical alignment detection system for detecting the alignment of a first object relative to a second object is provided. One or more light sources and one or...
Spin-on-glass anti-reflective coatings for photolithography
Anti-reflective coating materials for deep ultraviolet photolithography include one or more organic light-absorbing compounds incorporated into spin-on-glass...
Azeotrope-like compositions of tetrafluoropropene and trifluoroiodomethane
Provided are azeotrope-like compositions comprising tetrafluoropropene and trifluoroiodomethane and uses thereof, including use in refrigerant compositions,...
Drawn gel-spun polyethylene yarns and process for drawing
Gel-spun multi-filament polyethylene yarns possessing a high degree of molecular and crystalline order, and to the drawing methods by which they are produced....
High temperature powder metallurgy superalloy with enhanced fatigue and
A nickel based superalloy composition comprising 16.0 to 20.0 weight % Co, 9.5 to 11.5 weight % Cr, 1.8 to 3.0 weight % Mo, 4.3 to 6.0 weight % W, 3.0 to 4.2...
Methods for reducing the curvature in boron-doped silicon micromachined
Layers of boron-doped silicon having reduced out-of-plane curvature are disclosed. The layers have substantially equal concentrations of boron near the top and...
Integral turbine composed of a cast single crystal blade ring diffusion
bonded to a high strength disk
A lightweight high temperature bladed turbine disk intended for use in gas turbine engines. The bladed disk comprises a cast integral ring of single crystal...
Fluid-cooled mechanical face seal rotor
A fluid-cooled seal rotor is described for a seal assembly that includes a seal case, a seal stator, and wherein the rotor has a sealing face on a first side and...
Air turbine starter with angular contact thrust bearing
An air turbine starter for use in aircraft or other gas turbine engine applications. In a particular embodiment, the air turbine starter has a thrust bearing...
Diffusion bond mixture for healing single crystal alloys
A diffusion bond mixture paint and method for repairing a single-crystal superalloy article that minimizes the amount of braze alloy applied to the article. The...
Electrostatically actuated valve
An electrostatically actuated valve that is relatively small, has relatively low fabrication costs, and consumes relatively low voltage and/or power. Normally...
Integral compressor housing of gas turbine engines
A turbine engine compressor design utilizing multiple component integration, thereby reducing the number of required engine components. In conventional...
Method for calibrating an inertial measurement unit
A method for testing inertial measurement devices on a multi-axis rate table without having to utilize slip rings to transfer signals between the inertial...
In-rush current management
A duty cycle and period of clock stimulus signals of power conversion device are independently altered to handle in-rush current. In one embodiment, transient...
Means for in-place automated calibration of optically-based thickness
The calibration of a laser caliber is described. The laser caliber uses first and second sensors to determine the distance to different sides of a sheet. A third...
Broadband waveform reconstruction for radar
Resolution of a radar operating within a bandwidth is improved by defining a quantity of substantially rectangular sub-band filters to subdivide the bandwidth in...