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Devices and methods for chemical reactive filtration
A gas contaminant is filtered using fibers having internal cavities containing a chemically reactive oxidizing agent, an acid or base, a coordinating agent, a...
Asymmetric dual diaphragm pump
An asymmetric micro pump may be adapted to provide a greater fluid compression between input and output ports of the micro pump, as well as increased flow rate...
Resilient mount of uniform stiffness
A centering ring may be used to provide a resilient mounting system with uniform stiffness for rotating machinery. The centering ring may have first and second...
Fuel distributor and mounting system therefor and method of mounting a
A fuel distributor (10) and mounting arrangement that helps support the weight of the fuel distributor (10) during removal and replacement for improved...
Z offset MEMS device
A microelectromechanical system (MEMS) device with a mechanism layer having a first part and a second part, and at least one cover for sealing the mechanism...
Spun metal form used to manufacture dual alloy turbine wheel
A spun metal form used to manufacture a dual alloy turbine wheel. The spun metal form prevents braze alloy contamination of the hub/casting interface by...
Mapping systems and methods
Improved systems and methods for mapping are provided. In one embodiment, a system for mapping is provided. The system comprises a rangefinder adapted to output...
Technique for switching between controllers
A controller design for switching between m linear multivariable controllers each of whom stabilizes a linear plant has been presented. A Youla-Kucera...
Control system and method for compliant control of mission functions
Systems and methods are provided for controlling one or more actuators to perform a mission while complying with predetermined regulations. A system for...
System and method for dynamically creating and editing function block
types in a process control environment
An apparatus includes a memory capable of storing information defining multiple function block types. A combination of instances of one or more function block...
Information security for aeronautical surveillance systems
A method and apparatus for encrypting a Mode-S extended squitter exploiting a provided key. The key includes a control key segment, an address key segment, a...
Digital feedback systems and methods for optical gyroscopes
A digital feedback system for an optical gyroscope include a fiber optic sensing coil, an optical phase modulator, a photo detector and a processor. The sensing...
Wavelength calibration in a fiber optic gyroscope
Methods and apparatus are provided for calibrating a fiber optic gyroscope (FOG) to compensate for wavelength fluctuations. The wavelength of the light...
Sub-frame synchronized residual radar
A method of using a wireless communication system to determine locations is provided. The method including exchanging communication frames between at least two...
Method and system for communicating using pulsed radar signal data links
A method and system for communicating using pulsed radar signal data links is disclosed. The method comprises encoding downlink data with a signature sequence as...
Multifunctional avionic display
A display screen for displaying multiple sets of information is provided. The display screen includes at least one region of a select color designated to convey...
Non-contact position sensor with sonic waveguide
An apparatus and method for measuring the position of a member. The apparatus has a sonic waveguide, a generator for generating an interrogation sonic wave at a...
Differential charge pump with open loop common mode
A differential charge pump with common mode and active regulators is presented. Either type of regulator may be used to improve the performance characteristics...
Glass based packaging and attachment of saw torque sensor
A glass cover wafer is bonded to a quartz SAW using glass frit technology, such that the glass wafer and glass frit formulation provides a thermal coefficient of...
Engine start system with quadrature AC excitation
A starter-generator system may be used to supply sufficient starting torque to start an aircraft main engine. The main starter-generator stator winding may be...
Purification of organic solvents
The present invention is directed to processes for producing a high purity organic solvent from a crude organic solvent comprising providing a stream of crude...
Isolation scheme for reducing film stress in a MEMS device
A method of electrically isolating a MEMS device is provided. In one example, a piezo-resistive pressure sensor having an exposed silicon region undergoes a...
Cross-direction actuator and control system with adaptive footprint
A method and system for controlling one or more properties of a sheet of material to be manufactured on a sheet-making machine is disclosed. Actuators to control...
Image projection system with vibration compensation
A projection system includes a vibration controlling structure. The projection system includes an imaging unit mounted to a movable platform via a partially...
Magnetic shear force sensor
A shear sensor includes a stator structure, a transformer, and a ferromagnetic core. The stator structure distorts in two perpendicular axes upon application...
Single diaphragm ATF differential pressure transducer
An advanced thick film (ATF) pressure transducer can be produced from an advanced thick film stack on a metallic substrate. The metallic substrate has a flexible...
Robust MEMS flow die with integrated protective flow channel
A MEMS flow sensor has a flow channel that avoids wire bond pads and ancillary circuit elements. A fluid can move from the bottom of the sensor substrate, though...
Synchronized motor thrust reverser actuation system
A thrust reverser actuation system is provided that includes a synchronization system that synchronizes the actuation of at least two actuators coupled to at...
System and method for transmitting ACARS messages over a TCP/IP data
An ACARS messaging system according to the invention is deployed when a TCP/IP subnetwork is available to the aircraft. ACARS messages are encoded into ASN.1...
Method for sensor initialization in a structural health management system
A method for initializing a chain of non-initialized data collectors is disclosed. The chain of non-initialized data collectors are coupled to a controller. In a...
High speed gyrocompass alignment via multiple Kalman filter based
A method of aligning a gyro-compass comprising operating at least two Kalman filters in a set of Kalman filters to generate an error correction to at least a...
High-torque, low power reaction wheel array and method
Methods and apparatus are provided for reaction wheel (RW) assemblies for spacecraft. The apparatus comprises a M/G coupled to an inertia wheel and a controller...
Method, system, and computer product for performing trapezoidal reduction
of polygons and interrupted polygons
A method, system, and computer program product for rendering an image to available display area based on parameters of one or more unusable display areas. The...
Display with reduced power light source
A display includes a backlight comprising light sources. The light sources are divided into sections. The display also includes a transmissive display panel...
In-residence monitoring system incorporating voice output
A system for monitoring health related parameters of an individual can determine the existence of one or more health related conditions that may need attention....
Boundary-scan system architecture for remote environmental testing
A system including a chassis operable to receive a plurality of physical application modules and a test port via which an external test device is communicatively...
Sensorless position measurement method for solenoid-based actuation
devices using inductance variation
A sensorless position measurement method may be used to determine the position of a solenoid-based actuator which controls some substance. The sensorless...
Filter and system apparatus for removing sulfur-containing compounds from
A fuel filter for removing fuel impurities, particularly thiophenes, includes a hollow housing having a filter element therein. The filter element includes a...
Non-parallel spacer for improved rotor group balance
The present invention provides apparatus and methods for balancing stacked components of rotating machinery, such as in a gas turbine engine. Unlike conventional...
Non-concentric rings for reduced turbo-machinery operating clearances
Rings having holes with a centerline offset from the centerline of the outer diameter, or other diameter piloting feature of the ring (i.e., non-concentric...
Turbine blade tip and shroud clearance control coating system
A turbine blade tip and shroud clearance control coating system comprising an abrasive blade tip coating and an abradable shroud coating are provided. The...
High temperature and high pressure compressor piston ring
A piston ring for use at temperatures above 350.degree. F. at pressures greater than or equal to about 2000 psi, comprising a gap having a gap width about 1.4 to...
Electric park brake mechanism and method of operating an electric brake to
perform a park brake function
An electromechanical braking system includes a brake rotor, a brake stator, an EMA (52) having a rotor shaft (36), a ram (42) operably connected to the EMA (52)...
Inter-turbine temperature display compensation method
Control logic, and a method implemented by the control logic, compensates for mismatched inter turbine temperatures between two gas turbine engines and displays...
Solid-free-form fabrication of hot gas valve discs
A hot gas valve disc for a divert and attitude control disc switching element used in a propelled craft. The hot gas valve disc comprises a first layer...
Hardware key control of debug interface
In one embodiment, a system comprises debug functionality, a debug interface communicatively coupled to the debug functionality, and a hardware key interface....
Method and system using tire stretch data to control braking
A method of controlling a braking force applied to at least one wheel supporting a tire that includes steps of issuing a braking command (100), commanding an...
Method and apparatus applying virtual .DELTA.t trip criterion in power
A virtual .DELTA.T trip criterion is implemented in an electrical power distribution system to provide current-based tripping for a solid state power switching...
A miniature PWB with features that incorporate the required circuitry changes and component footprints, which has been enhanced with micro-castellations such as...
Active gas turbine lubrication system flow control
A lubrication system is provided for an aircraft turbine machine, the lubrication system being controlled by a closed-loop logic arrangement, wherein the oil...