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Articles Energy
Energy Storage for Hybrid Military Vehicles
The benefits of hybrid electric vehicles have been recognized by the U.S. Army and other military services. As a consequence, hybrid vehicles are being considered as future combat and tactical...
Articles Unmanned Systems
Update on NASA’s Unmanned Aerial Vehicle
In the August issue of Defense Tech Briefs, we highlighted NASA’s Altair/Predator B unmanned aerial vehicle (UAV) for Earth science missions. A lot has happened in the past two months, so we’re...
Articles Aerospace
SpaceWire: The Standard for Aerospace Communications
Developed in 1999 under the auspices of the European Space Agency, SpaceWire answered a longstanding spaceflight problem: no standard, high-speed communications protocol existed for flight...
Tech Transfer Reports Mechanical & Fluid Systems
Piezoelectric Actuator Amplifies Small Motions
Engineers at Dynamic Structures and Materials, LLC (DSM, Franklin, TN) have used funding from a Missile Defense Agency (MDA) Small Business Innovation Research (SBIR) Phase II grant to squeeze an...
Briefs Information Technology
Error-Free Data Acquisition and Archival for High-Bandwidth Military Applications
Acquiring data from sensors, transporting the data, and then archiving it for future reference has changed dramatically over the last few years. The traditional...
Briefs Information Technology
The Dataflow Interchange Format for Designing DSPs
The dataflow interchange format (DIF) is a conceptual framework for helping designers of digital signal-processing (DSP) systems to integrate diverse dataflow models, dataflow techniques, DSP-design software tools, DSP software libraries, and embedded processing platforms. Somewhat more...
Briefs Physical Sciences
System for Imaging Turbulent Combustion Flows
Asystem of scientific instrumentation and data-processing equipment has been assembled for research and education in turbulence, mixing, and chemical reactions (especially combustion) in...
Briefs Electronics & Computers
Variable-Data-Rate Speech Encoder
Avariable-data-rate (VDR) speech encoder has been designed to be interoperable with, and eventually to supplant, the many different voice encoders now used in military communication systems. Because these older...
Briefs Photonics/Optics
Apparatus Generates CE-Phase-Stable Two-Cycle Optical Pulses
A n apparatus that includes two optical parametric chirped pulse amplification stages has been built as a means of generating few-cycle, common-envelope (CE)-phase-stable, high-energy...
Briefs Photonics/Optics
Terahertz Fiber-Optic Lasers for Detection of Explosives
Fiber-optic lasers of a proposed type would serve as sources of coherent radiation at frequencies between 0.5 and 4.0 THz and output power levels ≥100 mW. In the original application...
Briefs Photonics/Optics
Research on Quantum Communication Repeaters
A program of research during the years 2001 through 2006 was devoted to building theoretical and practical foundations for the development of quantum repeaters as means of overcoming losses of photons in long-distance quantum communication systems. The idea underlying this research was to investigate...
Briefs Materials
Alloys for Nozzles of Hypersonic Wind Tunnels
Alloys are being developed for nozzles of hypersonic wind tunnels to be used in testing components of future hypersonic missiles, aircraft, and space transportation systems. The nozzle components...
Briefs Materials
Improved Dielectric-Breakdown Property of POSS-Filled Epoxy
A n experimental study has shown that the AC short-term dielectric breakdown potential of material specimens consisting of polyhedral oligomeric silsesquioxane (POSS) nanoparticles...
Briefs Materials
Low-Water-Permeability Encapsulants for Acoustic Sensors
Afamily of improved encapsulating materials for protecting underwater acoustic sensors has been invented. These materials could also be used for encapsulation or protective coating of...
Briefs Materials
Castable, Relatively Stiff Acoustic-Damping Materials
A recently invented family of acoustic-damping materials offers advantages over prior acoustic-damping materials:
Briefs Physical Sciences
Novel Methods of Detecting Buried Explosive Devices
Several novel methods of detecting landmines and other buried explosive devices have been proposed and are subjects of continuing research. The use of trained dogs has been shown to be an...
Briefs Physical Sciences
All-Dielectric, Non-Electronic Radio-Receiver Front Ends
All-dielectric, non-electronic, photonicassisted front ends are being developed as alternatives to traditional metal antennas and the associated metal connections and input electronic...
Briefs Physical Sciences
Liquid-Crystal-Particle Thermometry and Velocimetry System
A three-dimensional (3D) defocusing liquid-crystal-particle thermometry and velocimetry (3DDLCPTV) system has been designed and constructed (but not yet operated) for use in measuring...
Briefs Information Technology
Thwarting Code-Injection Attacks Using SDT-Based ISR
An improved method has been devised for defending a server or other computer against a code-injection attack, in which an attacker exploits a hardware or software vulnerability to inject...
Briefs Information Technology
Some Advances in Digital-Image Forensics
A program of research in the forensic analysis of digital images has yielded several proposed techniques for automated image-data processing to answer questions concerning the source, authenticity, and integrity of a given image or set of images. The need for such techniques arises because the ease with...
Briefs Information Technology
Parametric Design of Three-Dimensional Hydrodynamic Shapes
A method of parametric design of bodies having arbitrary three- dimensional shapes has been invented. The method is intended mainly for use in the design, analysis, and manufacture of...
Briefs Mechanical & Fluid Systems
Establishment of a Center for Defense Robotics
A document presents an overview of the recently established Joint Center for Unmanned Ground Vehicles (JC-UGV), located at the Army's Detroit Arsenal in Warren, Michigan. The JC-UGV is intended to become the central facility for managing all phases of the life cycles of military robotic ground...
Briefs Information Technology
Development of Adaptive and Reflective Middleware
A report describes Phase II of the Adaptive and Reflective Middleware Systems (ARMS) program, which was focused on developing an adaptive and reflective network Quality-of-Service (QoS) infrastructure for the Total Ship Computing Environment (TSCE). Conceived for the next generation of Navy surface...
Products
Object Detection and Screening
Brijot Imaging Systems, Orlando, FL, has introduced the BIS-WDS® GEN 2 object detection and people screening system that provides security officials with an effective method of detecting and locating...
Products
Night Vision Systems
The Owl® and Prowler® night vision systems from B.E. Meyers & Co., Redmond, WA, can couple to 35-mm, CCD, and digital cameras along with C-Mount and 35-mm objective lenses, telescopes, microscopes, and...
Products Software
Military Training Simulation Software
Aptima, Inc., Woburn, MA, has announced the DDD 4.0 desktop simulation software for training military and civilian teams. DDD can model a range of environments, including AWACS air battle management,...
Products
Privacy Filters
3M, St. Paul, MN, has introduced an expanded line of the 3M™ Privacy Filters for laptop computers and LCD monitors to make data visible only to persons directly in front of the screen. The microlouver technology works like...
Products
Notebook/Tablet PC
GETAC, Lake Forest, CA, has announced the V100 convertible PC featuring an LCD screen that instantly transforms from a notebook into a tablet PC. The portable V100 features ultra-quiet fanless design and includes a range of standard features, including a 10.4" screen, power-saving 1.2 GHz Intel® Core™ Duo Platform...
Products
Mobile Communications Systems
NEC Unified Solutions, Irving, TX, has announced its Mobile Voice and Data Unit, a mobile communications system that enables secure communications during disaster recovery. The system provides wireless voice, data, and video communications to government agencies and first responders during emergency situations. The...
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