Briefs

Aerospace

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...

Application Briefs

Defense

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...

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...

Articles

Aerospace

Electric Rockets and the Future of Satellite Propulsion

Humans have been using rocket propulsion for almost a millennium, starting with Chinese rockets and “fire arrows” in the 13th century and continuing to the modern era's powerful Space...

Articles

Aerospace

Designing Electronic Warfare to Regain Airborne Military Dominance

For decades, military aircraft have relied on electronic warfare (EW) solutions to protect assets and dominate airspace. The ability of the United States to detect and track...

Articles

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,...

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...

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...

Briefs

Robotics, Automation & Control

Exo-Brake Enables Safe Return for Small Spacecraft

Products

Aerospace

New Products

Rate Indicator/Totalizer The Hoffer (Elizabeth City, NC) HIT-4U Rate Indicator/Totalizer is being offered with additional options providing the user with enhanced functionality and flexibility in a compact enclosure. The choice of...

INSIDER

Aerospace

NASA Tests Engines That Reduce Drag and Fuel Burn

Boundary Layer Ingestion (BLI) is a promising idea NASA researchers are studying to reduce fuel burn in jet engines, thus reducing emissions and the cost of operating the aircraft. Thrust makes...

INSIDER

Defense

Technique Enables 3D Printing of Aerospace-Grade Carbon Fiber Composites

Researchers from Lawrence Livermore National Laboratory have become the first to 3D print aerospace-grade carbon fiber composites, representing a significant advance in...

INSIDER

Aerospace

NASA Test Flights Will Study Improved Efficiency of Supersonic Aircraft

NASA is set to begin a series of supersonic flights that will examine efforts to improve the efficiency of future supersonic aircraft. Future supersonic aircraft seeking to...

INSIDER

Aerospace

US, Japan Conduct First SM-3 Block IIA Intercept Test

Engineers from the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland, in cooperation with the U.S. Missile Defense Agency (MDA), the Japan Ministry of Defense,...

INSIDER

Aerospace

Next-Generation Batteries Could Power Microsatellites

NASA's Kennedy Space Center and the University of Miami are developing a new solid-state battery prototype that could revolutionize the way NASA operates microsatellites such as...

INSIDER

Aerospace

Polymer Material Decreases Mass of Aircraft

Lomonosov Moscow State University engineers created unique polymer matrices for polymer composites based on novel phthalonitrile monomers. The materials can sufficiently decrease the mass of...

INSIDER

Aerospace

Fluctuating Forces of Flight Captured by High-Tech Paint

A rocket is buffeted by a chaotic flow of air during flight. At high speeds, airplanes experience a similar, unsteady flow of air over their wings. A method to precisely measure these...

INSIDER

Aerospace

Discovery Could Lead to Cleaner, More Efficient Jet Engines

Researchers at The Ohio State University found a way to improve the high-temperature properties of superalloys used in jet engines. The method tailors an alloy’s composition and...

INSIDER

Test & Measurement

New Lab Helps Boeing Detect Aircraft Flaws

Researchers at Missouri University of Science and Technology and The Boeing Company established a new nondestructive evaluation (NDE) laboratory that uses millimeter-wave technology to improve the...

INSIDER

Aerospace

Army Demonstrates Hoverbike Prototype

The US Army demonstrated the flying capabilities of a unique rectangular-shaped quadcopter. The Joint Tactical Aerial Resupply Vehicle (JTARV), also known as a hoverbike, may one day make it possible...

INSIDER

Manufacturing & Prototyping

3D Printers Create Tomorrow’s Rocket Engines

Startup company Tri-D Dynamics LLC, a startup with ties to Purdue University, plans to use 3D printers as well as other additive manufacturing processes to make future rocket engines that show...

Briefs

Electronics & Computers

Development of High Quality 4H-SiC Thick Epitaxy for Reliable High Power Electronics Using Halogenated Precursors

Development of robust semiconductor devices with high energy efficiency and reliability is a key objective towards 'Energy...

Briefs

Aerospace

Energy-Filtered Tunnel Transistor: A New Device Concept Toward Extremely Low Energy Consumption Electronics

Altering the thermal characteristics of semiconductors can prolong battery life. Excessive heat dissipation (or power consumption)...

Articles

Aerospace

Open Standard Middleware Enables New HPEC Solutions

The military embedded computing landscape has been transformed from where it was 20 years ago — and that has been almost entirely enabled by the ability of prime contractors, systems...

Articles

Aerospace

Cooling Your Embedded System: What Can Your Open Standard Architecture Handle?

Embedded computing systems for Mil/Aero applications are often conduction-cooled in an ATR or nonstandard chassis. However, there are many designs that require 19"...

Articles

Electronics & Computers

Evaluating Key Certification Aspects of Multicore Platforms for Safety Critical Avionics Applications

High performance, low power consumption and small footprint requirements imposed by the embedded market on the processor industry is causing a...

Articles

Aerospace

Simulating and Analyzing Flow for an Air-to-Air Refueling System

Long-range bombers may have missions halfway around the world. Fighter jets may have to stay in the air longer than their relatively small fuel tanks will allow, or may find they...

Articles

Defense

The Ins and Outs of Spaceflight Passive Components and Assemblies

RF and microwave components deployed in spaceflight applications can experience hundreds of degrees of temperature variation, massive amounts of radiation, and can be expected to...