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Direct one-step synthesis of CF.sub.3-I
The present invention provides a process for the preparation of trifluoromethyl iodide. The process includes the step of: contacting in a reactor a compound...
Sensor pre-load and weld fixture apparatus and method
A sensor pre-load and welding apparatus and method are disclosed. A weld fixture apparatus includes a fixture base upon which a sensor package having a sensor...
Systems and methods for measuring relative thermal expansion coefficient
of low thermal coefficient of...
Systems and methods for accurately comparing the thermal expansion coefficient of components (materials substrate, etc.) to be attached in some manner. This...
Pendulous in-plane MEMS accelerometer device
A high aspect ratio microelectromechanical system device for measuring an applied force, the device being a cellular in-plane accelerometer formed of a base...
Cooling apparatus for use on a vehicle. The apparatus includes a heat exchanger in which heat is removed from a heat load by a coolant, and first and second...
Airborne based monitoring
A weather monitoring and prediction system that uses a fleet of aircraft to obtain data. Each aircraft has a local air data system that facilitates the...
Optical bench for diode-pumped solid state lasers in field applications
A rugged resonator for a laser includes a laser pump housing. An X-fold resonator assembly is configured to receive and hold the laser pump housing. The...
Bias-adjusted magnetoresistive devices for magnetic random access memory
A method and apparatus are presented for shifting a hysteresis loop of a magnetoresistive device. For example, a method provides for applying a bias current to a...
Piezoelectric transducer configured for use as a path length control
apparatus for an optical device comprising...
A path length control apparatus (PLC) for a ring laser gyroscope (RLG) provides a flattened surface for reflecting a laser beam. The flattened surface is...
Method, apparatus and computer program product for unstabilized approach
A method, apparatus and computer program product for assisting the pilot of an aircraft in making a go-around decision. Various aircraft parameters are monitored...
Multi-sensor device and methods for fire detection
Multiple parameter fire detection uses outputs from one or more radiant energy sensors in combination with outputs from smoke or thermal sensors to shorten...
Confocal scanner system and method
A radiation image that has been stored in an image plate (19), such as a photostimulable phosphor screen is read by stimulating an information-bearing target...
Process for the preparation of 1,1-dichloro-3,3,3-trifluoropropane
A convenient and economical process for the preparation of 1,1-dichloro-3,3,3-trifluoropropane (HCFC-243) by the reaction of 1,1,1,3,3-pentachloropropane...
Low cost quick response catalyst system
A catalyst system for removing one or more components from a fluid stream includes a binder layer and a plurality of catalyst structures affixed to, and...
Process for manufacturing friction material suitable for use as brake
Carbon-silicon carbide brake preforms are manufactured by carbonizing a blend of carbon (e.g., polyacrylonitrile) fibers and thermosetting pitch resin,...
Aircraft cabin multi-differential pressure control system
An aircraft pneumatic cabin pressure control system that is adapted to prevent the difference between cabin pressure and atmospheric pressure from exceeding a...
Bore and shaft assembly
An exemplary bore for a shaft of a turbomachine includes a longitudinal axis extending generally from an inner end to an outer end of the bore, an outer seat...
Turbine efficiency tailoring
A turbomachinery apparatus. A turbine is provided with a retainer having a bore step element for turbine wheel retention, and with an aperture manifesting a...
Pneumatic valve control having improved opening characteristics and an air
turbine starter incorporating the same
A starter air valve assembly includes a valve body, a flow control valve, a rate control servo mechanism, and a valve actuator. The valve body defines a flow...
Humidifier with reverse osmosis filter
A filtering system for use with a reservoir. The filter system includes a filter assembly capable of filtering particles sized 1.0 micrometers and larger and...
Gas flow control
Gas flow control is addressed using a controllable approach that facilitates safe operation. According to an example embodiment, a control arrangement for gas...
Fuel-air mixing apparatus for reducing gas turbine combustor exhaust
A fuel-air mixer for use in a combustion chamber of a gas turbine engine is provided. The fuel air mixing apparatus comprises an annular fuel injector having a...
Method for making a wafer-pair having sealed chambers
A method for fabricating a wafer-pair having at least one recess in one wafer and the recess formed into a chamber with the attaching of the other wafer which...
System and method for fixing a direction of magnetization of pinned layers
in a magnetic field sensor
A spin valve GMR sensor configured in a bridge configuration is provided. The bridge includes two spin valve element pairs. The spin valve elements include a...
Methods and apparatus for randomly modulating radar altimeters
A method for randomly phase modulating a radar altimeter is described. The method includes momentarily applying a signal from a random noise source to an...
Solid-state synchro/resolver converter
Methods and systems for simply and inexpensive converting the signals of solid-state sensors for use by analog systems and indicators. An embodiment of the...
Millivolt output circuit for use with programmable sensor compensation
An output sensor apparatus, system, and method including a circuit having a plurality of bridge resistors and one or more connecting resistors coupled to the...
Method and apparatus for generator control
A generator control circuit is disclosed that includes a first circuit (40) monitoring a generator voltage and producing a first output when the voltage is below...
Manufacture of functionally graded carbon-carbon composites
Annular brake disc preform (15), wherein 40 to 80 layers of reinforcement fibers of at least two different lengths (11, 19) ranging from 10 60 mm are distributed...
Model-based detection, diagnosis of turbine engine faults
A method of monitoring turbine engines used in aircraft from sensor signals from an engine for a predetermined set of engine characteristics. The signals are...
Transducers coated with anechoic material for use in down hole
A communication device is located within a well and includes a transducer that converts a first electrical signal into a first acoustic signal for transmission...
Miniaturized flow controller with closed loop regulation
An apparatus having scattering and multi-color fluorescence detecting, analyzing and identification capabilities of blood or other fluids of interest. The sample...
System and method of disabling an evacuation location device
An exit path indicating device incorporates at least a first port for receiving an alarm indicating signal. In normal operation upon receipt of the alarm...
Differential amplifier for dual bridge transducer
A plurality of bridge transducers are provided in a dual arrangement. An output terminal from each transducer is coupled to differential inputs of an amplifier....
Corrosion monitoring system
A system for monitoring corrosion in metal by comparing a test sample exposed to a corrosion causing environment and a reference sample exposed to a protected...
Lightweight wedge design for high speed generators
A wedge-shaped member to restrain coil windings of a generator rotor from moving under centrifugal force. The wedge-shaped, substantially hollow member including...
Solderless component packaging and mounting
An apparatus and method for providing three-dimensional carrier mounting of one or more electronic components. In accordance with one embodiment, the device...
The present invention provides a composition comprising: (a) dielectric material; and (b) porogen comprising at least two fused aromatic rings wherein each of...
Methods, devices, and/or systems for controlling vibration and/or acoustic noise. An exemplary method senses noise and/or, for example, rotational speed of a...
Adjustable force and position pre-load welding fixture
A pre-load weld fixture apparatus and method are disclosed, which include a stationary pivot block attached to a base, wherein the stationary pivot block is...
Disposable wireless pressure sensor
In general, a dielectric polymer substrate provided and an antenna formed upon the dielectric polymer substrate. A piezoelectric polymer layer (e.g., a...
Disposable and trimmable wireless pressure sensor for medical applications
Disposable pressure sensor methods and systems are disclosed. A substrate can be provided, along with a capacitor and an inductor fixed to the substrate to form...
Variable geometry turbocharger
A variable geometry turbocharger includes vanes disposed therein having an inner airfoil surface oriented adjacent a turbine wheel, and an outer airfoil surface...
Cutting blades having pointed tip, ultra-sharp edges, and ultra-flat faces
An apparatus and method for a cutting blade having a pointed tip and ultra-flat faces that intersect at ultra-sharp edges. The cutting blade is batch-fabricated...
Method for forming a bimetallic actuator
A method for post-fabrication modification of the snap actuation properties of a thermally responsive bimetallic actuator by exposing a pre-formed bimetallic...
Arrangements for increasing sputter life in gas discharge tubes
A gas discharge tube, such as a ring laser gyroscope, includes a block, a cathode, and an anode. At least a portion of the block is maintained at a reference...
Integrated reaction wheel assembly and fiber optic gyro
The present invention relates to a reaction wheel assembly and fiber optic gyro device. The device includes a reaction wheel assembly having a reaction wheel...
Carbon nanotube sensor
Carbon nanotubes are formed on projections on a substrate. A metal, such as nickel is deposited on the substrate with optional platforms, and heated to form the...
Method and apparatus for cooling turbomachinery components
An apparatus and method for cooling components associated with turbomachinery by means of one or more venturis placed in the intake flow of air into the...
Sensor arrangement having an air inflow pattern for preventing direct
A temperature sensor arrangement (100, 300) includes a sensor cavity (150), a temperature sensing element (330) being positioned along a center line (140, 340)...