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Aerospace

Certifying Composite Designs for Aerospace and Defense

Wherever you find newer and particularly larger aircraft these days, you're seeing the use of composite materials. The latest commercial planes, as well as innovative defense prototypes,...

Articles

Unmanned Systems

AuVSI™ XPONENTIAL: ALL THINGS UNMANNED

After a very successful trade show and conference in New Orleans last year, the Association for Unmanned Vehicle Systems International (AUVSI) is bringing this year's event, AUVSI XPONENTIAL 2017 to the...

Application Briefs

Aerospace

Reconfigurable Radio Tracks Flights Worldwide

When Malaysia Air Flight 370 disappeared somewhere over the Indian Ocean in 2014, it had flown far beyond radar range. Under a new space-based air tracking system — starting with a reconfigurable...

Articles

Power

Tailoring Fuel Injection to Control NOx

Future diesel engine legislation, such as the EU’s Stage V and possible Tier 5 in the U.S. for off-highway, demand further improvements to reduce CO2 while keeping the already-low NOx emissions...

Briefs

Nanotechnology

Luminescence Materials as Nanoparticle Thermal Sensors

The purpose of this research program was to create and study novel luminescence particles (phosphors} capable of sensing and retaining the time-temperature information to which they were...

Briefs

Sensors/Data Acquisition

Using Dempster-Shafer Fusion for Personnel Intrusion Detection

The Dempster-Shafer (D-S) mass function is used in effect as a common representation of heterogeneous sensor data. In order to cast each data source in this form, first the raw data...

Briefs

Sensors/Data Acquisition

Using Fisher Information Criteria for Chemical Sensor Selection via Convex Optimization Methods

The design of chemical sensor arrays from the standpoint of chemical sensor selection and error quantification has historically proceeded as an ad hoc process. Frequently, chemical sensors are developed not as general purpose sensing devices, but as...

Briefs

Aerospace

Development of an Optically Modulated Scatterer Probe for a Near-Field Measurement System

Near-field radiation patterns are useful in diagnosing antenna array defects, measuring far-field antenna patterns where the far-field is prohibitively...

Briefs

Aerospace

Angular Random Walk Estimation of a Time-Domain Switching Micromachined Gyroscope

The primary metrics that prohibit the use of microelectromechanical systems (MEMS) gyroscopes for navigation-grade inertial navigation units (IMUs) are angle...

Product Briefs

Materials

Light-Curable Black Adhesive

DELO-DUALBOND GE4949 from DELO Adhesives (Sudbury, MA) is a black adhesive that is light-curable. The black-dyed, multi-purpose, modified acrylate can be used for bonding most metals, plastics and glass. Designed...

Articles

Power

Past as Prelude to the Future

Engineers who have done patent searches know there’s truth in the old saying: Few things are truly new under the sun. First hybrid-electric car? 1899. First autonomous car tests? 1920s. First car with a...

Articles

Electronics & Computers

Connectivity Continues Its Advance

Fleet owners have been deploying telematic solutions for some time, but connectivity still is just beginning to move from early adopters to the mass market. Connectivity is providing more owners and...

News

Software

Estimation of Excavator Manipulator Position in Real Time

Automation of hydraulic excavators is valuable due to their potential applications in hazardous environments or remote locations, such as radioactive-contaminated areas. Manipulator...

Technology Report

Propulsion

The Upside of Downsizing: Senior Auto Executives Give Their Views

To downsize or not to downsize? That’s the engine-development question facing all OEMs. In an initial move to be seen to be more environmentally responsible, for many,...

News

Green Design & Manufacturing

Faurecia Targets NOx Reduction at Lower Exhaust Temps with Lightweight Cartridges

The Ammonia Storage and Delivery System (ASDS), developed by Amminex, has demonstrated an ability to nearly eliminate nitrogen oxide (NOx) pollutants from...