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White Papers

Confronting the Antenna Challenges in TodayÂ’s Military Applications Antennas, filters, amplifiers, and mixers are building blocks that are utilized in many existing defense weapons and Department of Defense (DoD) systems. In this white paper from Emerson & Cumming, new and emerging transceiver technologies as well as military applications are discussed. Path Explorer: a 3D Interactive Visualization of Selected Ray Trajectories in ASAP This technical publication from Breault Research Organization (BRO) describes the Path Explorer, a new feature developed for the Advanced Systems Analysis Program (ASAP(R)). The Path Explorer renders a three-dimensional interactive visualization of specifically selected ray trajectories, or paths, computed in the course of ASAP simulations.

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Ultra-Hard Material

Scientists at the University of California, Los Angeles, (UCLA) have made rhenium diboride, an “ultra-hard material” in a process that does not require applying pressure. Ultra-hard materials are used in the construction of new roads, for drills that bore for oil, and for scratch-resistant coatings. While diamond is the hardest known natural substance, it cannot drill though certain materials; a chemical reaction with iron causes a diamond blade to fail. At low applied forces, the hardness of rhenium diboride is equivalent to cubic boron nitride, the second-hardest material known. At higher applied forces, rhenium diboride is a little bit below that. For more information, click here.

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Malaria Treatment

Researchers at Johns Hopkins University (Baltimore, MD) have cured malaria-infected mice with single shots of a new series of potent, long-lasting synthetic drugs modeled on an ancient Chinese herbal folk remedy. The drugs mimic artemisinin, the active agent in a Chinese herbal drug used to treat malaria and other fevers for thousands of years. Artemisinin comes from the Artemisia annua plant. “These peroxide compounds promise not only to be more effective than today's best malaria remedies, but also potentially safer and more efficient,” said research team leader Gary Posner, Scowe Professor of Chemistry in the Krieger School of Arts and Sciences at Johns Hopkins. The oxygen-oxygen unit in the peroxides causes malaria parasites to self-destruct. For more information, click here.

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Technologies of the Week

A sintered silicon nitride ceramic has been disclosed that has high fracture toughness, strength, and stress rupture resistance at high temperature. View this technology here. Nickel-based single crystal alloys have been disclosed that retain their high-temperature mechanical properties after prolonged or repeated exposure to elevated temperatures. View this technology here. The Technologies of the Week describe inventions offered for license through the yet2.com marketplace. Search over $2.5 billion of licensable technologies at www.yet2.com.

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Plane Navigation

The European Space Agency (ESA, Paris, France) is conducting trials into helping guide airplane pilots via signals from satellites. Flight trials are being conducted to demonstrate the new possibilities offered by the European Geostationary Navigation Overlay Service (EGNOS), which has been launched by ESA, the European Commission, and Eurocontrol. The first European satellite navigation service, EGNOS will offer pilots vertical guidance information during approach and landing. The results of the trials show that EGNOS signals allow approaches and landings that meet the safety standards that govern international air traffic. The advantage of EGNOS is that it would be available everywhere without the need for ground infrastructure. It also provides vertical guidance procedures for every runway. For more information, click here.

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NASA Tech Briefs FREE Webinars

Virtual Testing at the CAD Stage with Simulation Software June 6, 2007, 2:00 PM In order to successfully compete in the global marketplace, your product design process needs to be the best in its class, delivering innovative products of the highest quality, at the lowest cost, with the shortest possible design cycle time. Sponsored by Noran Engineering, Inc., NASA Tech Briefs presents a FREE Webinar that examines how progressive engineering departments are accomplishing this by using analysis software at the CAD design stage to virtually test parts and validate structural, thermal, and dynamic performance before they make the first article. Benefits of PXI Express for Next-Generation Testing June 20, 2007, 2:00 PM Learn the capabilities, benefits, and features of PXI Express as a platform for next-generation test systems and instrumentation during this FREE NASA Tech Briefs Webinar sponsored by Geotest, Marvin Test Systems, Inc. Based on PCI Express and CompactPCI technology, PXI Express offers significant performance and bandwidth improvements when compared to current PXI systems, while preserving compatibility with over 1,200 existing PXI products. This flexibility means that PXI Express products will provide engineers with the bandwidth and performance required by tomorrow's applications, while maintaining compatibility and interoperability with today's PXI products and applications. To register for these FREE webinars, click here.

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NASA News

NASA has awarded a contract to Manhattan Construction Company of Fairfax, VA, for the construction of the Exploration Sciences Building at NASA's Goddard Space Flight Center in Greenbelt, MD. NASA has determined that all new facilities projects will reach the Silver rating, signifying a commitment to designing, procuring, and installing environmentally friendly materials and incorporating sustainable practices in both design and construction. The three-story office and laboratory building is designed as a U.S. Green Building Council Leadership in Energy and Environmental Design (LEED(R)) Silver structure. The LEED Green Building Rating System(TM) is a voluntary building certification program that defines high-performance “green” buildings that are environmentally responsible and healthy structures. For more information, click here.

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