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Procedure for replacement of acoustic liner in integrated exhaust duct
muffler for use with airborne auxiliary...
The present invention provides a method for replacing an acoustic liner through the forward end or aft end of an integrated exhaust duct muffler ("IEDM"). The...
Environmental controller housing
Principal component analysis based fault classification
Principal Component Analysis (PCA) is used to model a process, and clustering techniques are used to group excursions representative of events based on sensor...
Cylinder to cylinder variation control
Method and system for controlling cylinder to cylinder variations of undesirable emissions in exhaust gas of engines with exhaust gas recirculation. An engine...
Method for refreshing a non-volatile memory
A non-volatile memory and a method of refreshing a memory are described. The method includes allowing an external system to control refreshing operations within...
Synchronous video and data annotations
A video surveillance system captures video of a protected area, stores the video in a computer readable memory, stores data annotations in the computer readable...
Method and system for calibrating radar altimeters
A method for calibrating an altimeter is disclosed. The method comprises monitoring signal strength of one or more altitude measurements. Based on the signal...
Monitored voltage inverter for security system
A monitored voltage inverter for a security system is disclosed. A voltage inverter is coupled to the power supply of the control panel which can provide AC...
State validation using bi-directional wireless link
Building monitoring and control systems including bi-directional radio frequency links between master and remote units wherein the remote units operate in a low...
Variable gain amplifier with constant input referred third order intercept
Variable gain amplifier (VGA) circuits and methods implemented in such circuits are disclosed. An example VGA circuit includes a differential transistor pair for...
Power supply with programmable fuse for mode selection
A voltage regulator operable as a voltage follower while a fusible link is closed and in a regulated voltage mode when the fusible link becomes open. The voltage...
Smart phase lock loop
A method and apparatus perform control. A control method according to one embodiment accesses a Hall effect signal; obtains an error signal relating to a system...
HVAC actuator having torque compensation
A method and system are disclosed for adjusting the torque of a motor for a HVAC actuator based upon one or more operating conditions of the HVAC actuator. One...
Skin detection sensor
A device for detecting the presence of human skin including an illuminator source for providing a first IR band and a second IR band. The first IR band is...
Low temperature curable materials for optical applications
The invention relates to low temperature curable spin-on glass materials which are useful for electronic applications, such as optical devices. A substantially...
Electrical power generator
An improved system for generating electrical power using a fuel cell. More particularly, a system for generating hydrogen gas by reacting water vapor with a...
Air turbine starter assembly
An aircraft engine starter assembly provides for liquid cooling of the clutch assembly and overrunning engine by integrating a pitot pump in the system. The...
A mesovalve having a diaphragm situated between a first chamber and a second chamber. There may be an inlet and an outlet in the first chamber. The diaphragm may...
Vibrating beam force transducer
An apparatus and method for monolithic force transducers in which a sensed force is applied across only two ends of a pair of force sensing elements so that the...
Force rebalancing and parametric amplification of MEMS inertial sensors
MEMS devices and methods for measuring Coriolis forces using force rebalancing and parametric gain amplification techniques are disclosed. A MEMS inertial sensor...
Force rebalancing for MEMS inertial sensors using time-varying voltages
MEMS devices and methods employing one or more electrodes coupled to a time-varying rebalancing voltage are disclosed. A MEMS inertial sensor in accordance with...
Wireless sensor housing
Wireless remote housing
Jet exhaust display
A graphics display system is provided. The graphics display system comprises a display element, a database adapted to store thrust profile data, and at least one...
Miniature cooling device
A method for regulating temperature in an enclosure is disclosed. The method involves monitoring a component temperature inside the enclosure. When the component...
Method and system for monitoring a patient in a premises
A system and method for monitoring the whereabouts of a patient in a house using security system components such as motion detectors and the like, and for...
Automatic detection of microphone sabotage in a security system device
The present invention automatically detects the sabotage of an audio transducer such as a microphone in a security system device. An audio transducer generates...
Mechanical oscillator control electronics
A control system for a mechanical oscillator having a sinusoidal drive signal with a frequency that is a fractional multiple of a frequency of a signal of the...
Methods and composition for cleaning and passivating fuel cell systems
A cleaner-passivator composition and method for treating a fuel cell cooling system are described. The cleaner-passivator comprises a complexing agent, a...
System and method for uniform multi-plane silicon oxide layer formation
for optical applications
Methods and systems for growing uniform oxide layers include an example method including growing a first layer of oxide on first and second facets of the...
Complex shaped fiber for particle and molecular filtration
An ultra-efficient multilobal cross-sectioned fiber filter for chemical contaminant filtering applications is described. An absorptive chemically reactive...
Mold fixture for extracting and inserting upper and lower molds
A mold fixture 20 for safe and efficient extraction, insertion and storage of mold inserts 26, 28 is provided. The mold fixture 20 includes a lower receiving...
Integral diffuser and deswirler with continuous flow path deflected at
An integrated assembly is provided for a centrifugal compressor, which integrates selected static portions of the centrifugal compressor into a monolithic...
Low inertia ball brake/clutch
A clutch assembly is provided that includes a rotor, a stator, a clutch element disposed between the rotor and stator, and an axial force source. First and...
Strain gauge sensor system and method
A strain gauge sensor system and method for measuring the strain in a member, such as a fiber rope, has a sensor target assembly having a plurality of magnets...
Method of differential-phase/absolute-amplitude QAM
A method of quadrature amplitude modulation involving encoding phase differentially and amplitude absolutely, allowing for a high data rate and spectral...
Fault tolerant communication apparatus
A fault tolerant communication apparatus provides redundant links between at least two computers. The apparatus includes a first set of links connected to a...
High power generator with enhanced stator heat removal
A high speed, high power generator has its main stator configured with one or more reduced-diameter sections. The generator includes a generator housing, a main...
Electrical starting, generation, conversion and distribution system
architecture for a more electric vehicle
A system (200) for distributing electrical power, includes: a first high voltage AC power distributing unit (210a) including a first high voltage AC bus (214a-1,...
Augmented catalytic heat exchanger system
Systems, apparatus, and methods for the catalytic removal of at least one pollutant from an air stream via a catalytic precooler arranged in series with at least...
Formulation for the manufacture of carbon-carbon composite materials
Method for manufacturing a carbonized carbon-carbon composite preform, by: mixing (a) chopped carbon fiber, chopped stabilized pitch fiber, or chopped oxidized...
Medical application for no-motion sensor
A sensor unit to detect a stillness event, the sensor unit including a gyroscope attached to a monitored person, a micro-controller communicatively coupled to...
Systems and methods for self-synchronized digital sampling
Systems and methods for self-synchronized data sampling are provided. In one embodiment, a system for capturing synchronous data samples is provided. The system...
Brake system providing at least one enable signal to brake controllers and
method of using same
A braking system includes a brake control system (BCS) (26) having a first output (30) and a second output (32), a first controller (34) having a brake command...
Determination of wireless link quality for routing as a function of
predicted delivery ratio
Packet signal-to-noise ratio (SNR) values and historical delivery ratio information are combined to predict a delivery ratio for a communication link. Since...
Method, apparatus and computer program product for unstabilized approach
A method and apparatus for assisting the pilot of an aircraft in making a go-around decision. Various aircraft parameters are monitored during the approach to...
Method and system to detect tampering using light detector
An optical anti-tamper system including a light emitting layer located within a chassis, a light detecting layer located within the chassis and one or more...
System and method for protecting networked security devices
A system for protecting a plurality of networked security devices is disclosed. The system includes a plurality of connectors, a plurality of security containers...