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Aerospace

2018 Create the Future Design Contest: Aerospace & Defense Category Winner

DETECTING PLASTIC LANDMINES

Hidden PFM-1 anti-personnel landmines are unexploded ordnance (UXO) devices that pose a difficult challenge to conventional...

Articles
Aerospace

Zero-Emissions Electric Aircraft: Theory vs Reality

Many different electrically propelled aircraft have been or are soon to be flying. Recently a zero-emissions electric aircraft, Solar Impulse, flew around the world with zero fuel....

Briefs
Defense

The Effect of Substrate Emissivity on the Spectral Emission of a Hot-Gas Overlayer

Recently, in operando optical investigations of high temperature solid oxide electrochemical cells (SOECs) have gained significant traction with several...

Briefs
Unmanned Systems

Modeling and Simulation of an Unmanned Ground Vehicle Power System

Robotic vehicles such as unmanned ground vehicles (UGVs) have multiple sources of power, including batteries, fuel cells, combustion engines, ultracapacitors, and solar cells...

Articles
Aerospace

Hybrid-electric distributed propulsion explored

A turboelectric distributed propulsion (TeDP) system is a powertrain consisting of a turboshaft engine used solely to provide electrical power through a generator to electric motors driving...

Briefs
Electronics & Computers

Power Management for the Electric Taxiing System Incorporating the More Electric Architecture

With airlines increasingly directing their attention to operating costs and environmental initiatives, the More Electric Architecture for Aircraft...

Articles
RF & Microwave Electronics

Improving Signal to Noise Ratios in Defense Electronics

As a vertical market, “defense electronics” encompasses a huge range of systems, from portable communications to transportation, avionics, and shipborne radar. While the power...

Briefs
Materials

Synthesis of Long-Chain-Branched (LCB) Polysulfones for Multifunctional Transport Membranes

Increasing numbers of technologies are based on the idea of harnessing charge transport for useful processes such as energy harvesting, actuation, and sensing. Although much progress exists based on perfluorosulfonated platforms, new and more complicated...

Briefs
Materials

Polymer Matrix Composite Materials for a Structural Multifunctional Fuel Cell

A structural multifunctional fuel cell design enables material elements participating in power or energy processes to also carry significant structural loads....

Briefs
Electronics & Computers

Emerging Power and Energy Technologies for Portable Electronics

A report discusses data obtained for the Navy's Special Operations Command (SOCOM), which seeks a portable power/energy source capable of providing sufficient power and energy for complex missions at a minimal weight penalty. The report focuses on the specific energy of systems,...

Briefs
Materials

GOx/CNT/Silica Composites for Bioelectrodes

Composites of glucose oxidase (GOx), carbon nanotubes (CNTs), and biologically synthesized silica have been synthesized and tested. These composites are prototypes of biological/electrical...