This research proposed the use of inexpensive, lightweight range sensors for indoor unmanned aerial vehicle (UAV) navigation. Two potential range sensors were tested for suitability and error...

A modular, portable, reconfigurable wireless sensor system monitors and records environmental conditions in an aircraft cabin. By designing a sensor system that can be easily...

The performance of six different commercially available carbon monofluoride (CFx) materials was evaluated at four different discharge rates....

Briefs: Materials
Nanodomain Model of Polymer-Derived Ceramics

Areport discusses a model developed to explain the unusual properties of polymer- derived ceramics (PDCs), which are so named because they are made by controlled pyrolysis of cross-linked polymers. PDCs are metastable ceramics that have potential to be further developed into high-temperature materials...

Briefs: Mechanical & Fluid Systems
Lightcraft Propulsion for Launching a Small Satellite

A study of lightcraft propulsion systems in general has led to the conception and analysis of such a system for launching a small (having a mass no more than a few kilograms) satellite...

Briefs: Mechanical & Fluid Systems
Eccentric Mounting and Adjustment System for Belt-Driven Devices

This design relates to an eccentric mounting and adjustment (EMA) system for belt driving, or for belt-driven devices, that is installed and operated within the restricted confines of an engine compartment, typically a motor vehicle. It satisfies two essential requirements for...

Tech Transfer Reports: Sensors/Data Acquisition
Mass Spectrometer Saves Power While Tracking Harmful Substances

British researchers who received R&D assistance from the Missile Defense Agency (MDA) are marketing a new tool that could zero in on toxic chemicals in baby formula, lead...

Tech Transfer Reports: Materials
Shape-Memory Material Could Improve Prosthetics

A shape-memory composite material developed for satellite antennas could prove useful in prosthetics and next-generation ski boots. The material, identified by the trade name TEMBO®, was...

LMS International (Troy, MI) has introduced the SCADAS Durability Recorder designed for rugged data acquisition in extreme conditions. It is resistant to water, dust, dirt, shock, vibration, and jolts, and...

Diamond Systems Corp. (Mountain View, CA) has introduced Pluto, a compact board-level embedded computer based on the Intel Atom processor and featuring modular PC/104-Plus expansion. The PLT-N270-1G is the first in a series...

Products
Rugged Keyboard

Advanced Input Systems (Coeur d’Alene, ID) offers the Grizzly Xtreme rugged keyboard for harsh environments. It is suited for use with gloved hands and light-pressure typing, and consists of an elastomer keypad encased in...

Aeroflex (Colorado Springs, CO) offers the UT130nHBD digital application-specific integrated circuits (ASICs) that are radiationhardened from 100 krad to 300 krad(Si) total ionizing dose (TID), with up to 15,000,000...

The MPM20 Metal Tab TO-220 power film resistors from Caddock Electronics (Roseburg, OR) feature a standard lead finish of solderable thin gold for applications that require pure tin-free components. A non-inductive...

Douglas Electrical Components (Randolph, NJ) hermetically seals circuit boards, including flex, rigid, and hybrid circuits for high-volume applications with space or weight constraints such as military and...

Fiber-optic networks have benefited from nearly 20 years of continuous expansion (notwithstanding the brief, yet surprisingly quiet period from 2002 to 2005). For terrestrial networking,...

As technologies such as digital signal processors (DSPs), field programmable gate arrays (FPGAs), and general-purpose processors (GPPs) advance, product and feature...

Wide bandgap semiconductors (e.g., silicon carbide) will enable operation of military systems at temperatures above 150 °C, which eases thermal...

Briefs: Materials
RF Polymer Composites for Electromagnetic Systems

Design of polymer composites with specific engineered electromagnetic properties are of use in a variety of physical electromagnetic systems above 100 MHz. In physical electromagnetic systems such as GPS, radomes, WiFi, etc., proper choice of the material can be transformative in that it can...

The dominant materials solution used for ballistic transparency protection of armored tactical platforms in commercial and military applications is low-cost glass backed by...

The Army uses numerous adhesives and sealants, among other coating materials, that contain significant amounts of hazardous air pollutants (HAPs). This work...

Briefs: Electronics & Computers
Wireless Network Cocast: Location-Aware Cooperative Communications with Linear Network Coding

In wireless networks, reducing aggregate transmit power and having even power distribution increase the network lifetime. The conventional direct transmission (DTX) scheme results in high aggregate transmit power and uneven power distribution. In...

Briefs: Electronics & Computers
High Assurance Virtualization Engine (HAVEN)

Virtualization technology has been around since the late 1960s. Initially, it was conceived to maximize utilization of expensive hardware by running multiple instances of an operating system (OS)...

For air, space, and ground-based systems, there is a clear need for high-performance, lightweight, low-power, highly reliable computing on data-intensive applications....

Briefs: Photonics/Optics
Solid-State, High-Energy Lasers Based on Rare-Earth Doped Gallium Nitride

Laser-based directed-energy weapons (DEW) are important components for future Army missile defense systems. The diode-pumped, rare-earth (RE)-doped, solid-state laser is a very promising path towards achieving a DEW-sufficient level of average power from a reasonably...

Analog optical links are finding increased application in commercial and military systems ranging from radio-over-fiber applications, antenna remoting, and...

Aconventional analog fiber-optic link can be augmented with a recirculating optical delay loop so as to realize an optically assisted analogto- digital converter (ADC) that...

Externally coupled electroabsorption modulators (EAMs) are commonly used in order to transmit RF signals on optical fibers. Recently, an alternative...

Briefs: Mechanical & Fluid Systems
Developing Fleets of Autonomous Underwater Vehicles

Autonomous underwater vehicles (AUVs) have a demonstrated capability to collect valuable data for scientific and military purposes. Historically, individual vehicles have been used. To reduce the overall time and cost of acquiring data over large areas, multiple vehicles must be used. A fleet...

Full Authority Digital Engine Control (FADEC), based on a centralized architecture framework, is being widely used for gas turbine engine control. However, current FADEC is not able to...

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