Stories

All-dielectric, non-electronic, photonicassisted front ends are being developed as alternatives to traditional metal antennas and the associated metal connections and input electronic...

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...

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...

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...

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...

NASA's Dryden Flight Research Center, Edwards, CA, has partnered with General Atomics Aeronautical Systems, Inc. (GA-ASI) of San Diego, CA, to demonstrate technologies...

Articles: Aerospace
North Carolina Organization Fosters New Defense and Security Technologies

The Defense and Security Technology Accelerator (DSTA), located in Fayetteville, NC, is a new and innovative program designed to create collaborations with the military, entrepreneurs, and innovators to drive technology business development, technology commercialization,...

Progress has been made in research on several fronts in an effort to develop computational simulation capabilities for use in virtual design and testing of advanced structural materials. It...

Amethod and apparatus have been conceived for using electrochemical impedance spectroscopy (EIS) for determining rates of corrosion of coupled metals. EIS has been used heretofore for...

A program of research has addressed a methodology of scaling of flight tests of unmanned air vehicles (UAVs) intended primarily for military use in observing and/or attacking targets on the...

Arrays of electrochemical sensors that include specially coated (as described below) gold electrodes on flexible polyimide sheets have been fabricated and tested in a continuing...

Briefs: Medical
Portable Simulator for Training in Robot-Assisted Surgery

Aportable apparatus is being developed as a means of training surgeons in robot-assisted surgery, including laparoscopic and other forms of minimally invasive surgery. The apparatus can be characterized as a virtual reality system that includes not only a computer and a visual display...

Briefs: Physical Sciences
Imaging System for Characterizing Materials and Processes

Ahigh-performance digital imaging system has been assembled to provide enhanced capabilities for characterizing materials and processes. Highspeed imaging is needed for observation and analysis of such fast dynamic processes as impact fracture (including ballistically induced fracture) in...

Briefs: Physical Sciences
Progress in Research on Bacteria-Powered Motors

Progress has been made on several fronts in research on biomotors and especially on microscopic motors powered by bacteria. The progress consists mostly of advances in the art of attaching motile bacterial cells to surfaces in specific, pre-designed microarrays.

Briefs: Physical Sciences
AFRL’s Demonstration and Science Experiments Mission

A document describes the Air Force Research Laboratory's Demonstration and Science Experiments (DSX) mission, dedicated to research needed to advance the ability to operate spacecraft in the harsh radiation environment of medium earth orbit (MEO). The DSX spacecraft, to be launched in late...

Today's warfighters operate some of the most technologically advanced vehicles, aircraft, and weapons systems, and to do so effectively and safely, they...

Colonel Lewis F. Setliff III
Commander/District Engineer, St. Louis District
U.S. Army Corps of Engineers

In August of 2005, Hurricane Katrina hit the Gulf Coast and became one of the...

Embedded OEM application markets such as the military and aerospace industries are experiencing a growing demand for sensors that provide instantaneous and continuous...

A program initiated by the Defense Advanced Research Projects Agency (DARPA) and now also pursued by other agencies called “Learning Applied to Ground Robots” (LAGR), is...

Briefs: Information Technology
Advances in Algorithms for CFD and Finite-Element Simulation

A program of research and development has resulted in some advances in algorithms for computational fluid dynamics (CFD), finite-element simulation of solid objects undergoing large deformations, and some related topics. The main advances are summarized as follows:

An object-recognition algorithm analyzes data from two-dimensional (2D) images to locate and identify possibly complexly shaped three-dimensional (3D) objects in possibly highly cluttered...

For over two decades, the VMEbus has maintained its position as the open standard bus architecture of choice for defense and aerospace applications. While VME, a parallel...

The demand for fast evolution and increased flexibility of electronics systems in many different industries and applications has driven the trend for increasing software content of...

In an application of computational fluid dynamics (CFD), flow fields about a slender-bodied finned projectile and the resulting aerodynamic forces and moments on the projectile were...

Briefs: Information Technology
Multi-Scale Model of Failure in a Composite Material

An adaptive concurrent multilevel computational model of failure in a heterogeneous-material structure has been developed. As used here, "concurrent" is a term of art characterizing a class of structural/material models that (1) incorporate submodels representing material substructures at...

Molecular aptamer beacons (MABs) are being investigated for use as rapid-signaling probe compounds for detecting specific proteins of interest (target proteins). In the MAB approach, one...

Arrays of nanosensors for detecting biomolecules associated with breast cancer are undergoing development. It has been proposed to construct the arrays as silicon-based large-scale...

Briefs: Physical Sciences
Traveling-Wave Wide-Band Microstrip Antennas

Microstrip antennas that can be made to perform well over relatively wide frequency ranges but are mechanically and electrically simpler than prior such antennas have been invented. These antennas are designed to support traveling waves, in contradistinction to being designed traditionally to support...

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