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Briefs Physical Sciences
Detector Module for Testing Silicon Carbide Semiconductor Devices
Long-term stress testing of silicon carbide (SiC) semiconductor devices is required to determine suitability for power electronics applications. During testing, preventable...
Briefs Electronics & Computers
Automated Data Acquisition for a Prognostics and Diagnostics Health Monitoring System
A highly flexible automated prognostics and diagnostics sensor module (PDSM) prototype is presently under development to be incorporated for data acquisition...
Briefs Materials
Wettability Tests of Polymer Films and Fabrics
High-strength polymer materials are useful components in many multifunctional materials applications. However, because of low reactivity, their use is inhibited in many processing techniques....
Briefs Mechanical & Fluid Systems
Using a Steering Shaping Function to Improve Human Performance in By-Wire Vehicles
Currently, there is a performance issue regarding vehicle control at higher speeds for some indirect-vision, by-wire military vehicles; that is, those vehicles...
Briefs Manufacturing & Prototyping
Manufacturing Cylindrical Parts Using Deep Draw Technology
In applications where product performance is mission critical, commercial, military, and aerospace companies require technology to manufacture deep- drawn cylindrical product...
Briefs Energy
Advanced Lithium Ion Systems for Military Vehicles
The higher energy and power density of Li-Ion battery technology offers a significant reduction in the weight and volume for hybrid electric vehicle (HEV) battery systems compared to lead acid and nickel metal hydride technologies. Saft’s High Power Li-ion battery technology has demonstrated...
Briefs Physical Sciences
MEMS-Based Optical Limiter
Protecting optical sensors and detectors against excessive input signals is not only important for dealing with unintentional overloads, but also central for protecting sensors against intentional high-intensity...
Briefs Physical Sciences
Reducing Thicknesses of PbZrₓTi₁₋ₓO₃ Films in Capacitors
A document describes experiments performed to determine effects of reducing the thicknesses of films of lead zirconate titanate (PbZrxTi1-xO3, wherein 0<x<1) used as ferroelectric dielectric layers in some capacitors. The fabrication of specimen capacitors for the experiments...
Briefs Software
Virtual Network Computing Software for DataWall Remote Display
VNC (Virtual Network Computing) is open-source software that allows a user to view and interact with a remote computer (known as the VNC server) from a local computer (known as the VNC viewer/client). VNC is used to display multiple remote desktops on the DataWall. The original VNC...
Briefs Software
Software Suite for a Large Defense System
A suite of software tools was developed to enable networks composed of many hundreds, thousands, or even millions of commodity computers to protect themselves against a variety of security threats. These tools include Anagram, a content-based anomaly detection (AD) tool; ASSURE, which provides automatic...
Application Briefs RF & Microwave Electronics
New All-Digital RF Technology Simplifies the Radio Environment
The concept of a software or “cognitive” radio has been around for about 20 years, and has progressed to the point where open-source software code is available. A cognitive radio is “smart” in the sense that it is continuously aware of changes in radio frequency (RF) spectrum...
Articles RF & Microwave Electronics
Wireless Sensor Network with Geolocation
Maintaining situational/positional awareness in indoor and urban environments is difficult because buildings, walls, and other obstacles obstruct vision and RF propagation. Propagation channels are...
Articles Data Acquisition
2D Laser Profiling Scanner for Detecting Targets
The Radiometric Sensor Development and Applications Team of the Sensors and Electron Devices Directorate (SEDD) at the U.S. Army Research Laboratory (ARL) has developed a 2D laser profiling...
Briefs Electronics & Computers
Heterogeneous System-on-a-Chip for Self-Powered Wireless Sensor Networks
A new dimension of system architecture design is emerging where hundreds to thousands of ultralight (
Briefs Mechanical & Fluid Systems
Sensing for Controls and Propulsion Health Management in Turbine Engines
Advances in engine performance and reliability require sensor components that operate reliably under extreme engine operating conditions (e.g., takeoff, max thrust) and in...
Briefs Sensors/Data Acquisition
Tightly Coupled INS, GPS, and Imaging Sensors for Precision Geolocation
To address the issue of poor georegistration performance for small unmanned aerial vehicles (UAVs), navigation and target-location accuracy improvements achievable by tightly integrating an image-based feature-tracking algorithm with Global Positioning System (GPS) and a...
Briefs Manufacturing & Prototyping
Fabricating Biologically Inspired Artificial Haircell Sensors
As electronics packaging and equipment have decreased in size and weight, so have the potential dimensions of unmanned aircraft. Specifically, a classification of micro air vehicles...
Briefs Electronics & Computers
Polypeptide-Based Molecular Electronics
Polypeptide supramolecules that will self assemble from solution and will form molecular wires that exploit quantum mechanical transport mechanisms can enable the formation of molecular devices such as...
Briefs Photonics/Optics
Photon-Counting Chirped Amplitude Modulation Ladar
This work is a follow-on to an effort to develop a method using Geiger-mode avalanche photodiode (GM-APD) photon-counting detectors in the U.S. Army Research Laboratory’s chirped amplitude...
Briefs Physical Sciences
Measurement of Transient Heat Flux and Surface Temperature Using Embedded Temperature Sensors
A report describes approximate solutions for surface temperature and heat flux for two embedded temperature sensors. The solutions were verified and the range of validity was established using several methods including comparisons with an exact analytical...
Briefs Physical Sciences
Considerations of Aeroacoustics in Turbojet-Engine Testing
A study of the aeroacoustics of a turbojet-engine test cell has been performed as one step in the development of a computational aeroacoustics capability (CAA) that could provide...
Briefs Physical Sciences
Imaging and Spectral Measurements of Explosions
A document describes experiments performed to investigate rates of delivery of energy onto targets from different explosive formulations. The experiments were designed to measure relative positions of blast fireballs and leading shock fronts; determine whether different explosive formulations exhibit...
Articles Aerospace
Active Thermal Management for Cooler Body Armor
The military places greater demands on its equipment — electronic and otherwise — than any other market segment. It is also true that it places its greatest thermal demands on the men and...
Briefs Electronics & Computers
Evaluation of Four Methods of Reconfiguring an FPGA
A study was performed to evaluate the relative merits of four methods of reconfiguring a field-programmable gate array (FPGA) in response to detection of a faulty configurable logic block...
Briefs Electronics & Computers
Asynchronous Architectures for Large-Integer Processors
New architectures have been developed for cryptographic hardware that offer high throughput, algorithm flexibility, radiation hardness, and low power. The asynchronous (clockless) architecture combines a dedicated large-integer processor (LIP), a field programmable gate array (FPGA), and a...
Briefs Electronics & Computers
Using High-Performance Computing Clusters to Support Fine-Grained Parallel Applications
A heterogeneous cluster comprised of host processors and field programmable gate arrays (FPGAs) was used to accelerate the performance of parallel...
Briefs Electronics & Computers
Implementing On-Board Cloud Detection on a Reconfigurable Computer
Reconfigurable Computers (RCs) combine traditional microprocessors with field programmable gate arrays (FPGAs), and are characterized by lower form/wrap factors compared to...
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