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Next-Generation Batteries Could Power Microsatellites

Daniel Perez, Ph.D., displays a piece of the prototype structure for a new solid-state battery. (Photo: NASA/Dimitri Gerondidakis) NASA's Kennedy Space Center and the University of Miami are developing a new solid-state battery prototype that could revolutionize the way NASA operates microsatellites such as CubeSats. Rather than placing a battery in the experiment, taking up 20 to 35 percent of the available volume, the battery now resides in the payload structure, thereby opening up additional free space for researchers to perform more science.

Posted in: News, Defense

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Polymer Material Decreases Mass of Aircraft

An engine fan with a carbon-fiber cover. (Credit: Aleksander Babkin) Lomonosov Moscow State University engineers created unique polymer matrices for polymer composites based on novel phthalonitrile monomers. The materials can sufficiently decrease the mass of aircraft parts that operate at high temperatures. The high-temperature polymer composites can replace existing metal engine parts.

Posted in: News, Defense

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Smarter Prototyping — How Stratasys F123 3D Printers Make Rapid Prototyping More Accessible and Productive

3D printing’s contributions across the design, engineering and manufacturing disciplines are not new. The technology has been available for over thirty years and is often lauded as the next industrial revolution. Despite some inflated claims, there’s no denying that 3D printing has achieved its place as a valuable design and manufacturing methodology, and a cornerstone of rapid prototyping. It lives up to the promise of making businesses competitive by giving them tools streamline and enhance the product-creation processes. This white paper shows there’s never been a better time to invest in 3D printing, a fact made possible by the new Stratasys F123 3D Printer Series. These 3D printers were designed to remove barriers designers and engineers face by making the RP process more efficient and productive. Learn how the Stratasys F123 Series addresses typical rapid prototyping pain points and lets companies create better products faster, reducing the time to market.

Posted in: White Papers, White Papers, Manufacturing & Prototyping

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New Lab Helps Boeing Detect Aircraft Flaws

Missouri S&T researchers installed this microwave and millimeter-wave laboratory at Boeing’s South Carolina R&D center. (Boeing/Missouri S&T) Researchers at Missouri University of Science and Technology and The Boeing Company established a new nondestructive evaluation (NDE) laboratory that uses millimeter-wave technology to improve the detection of potential flaws in coatings, surfaces, and materials.

Posted in: News, Aerospace, Defense, Instrumentation

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Fluctuating Forces of Flight Captured by High-Tech Paint

Amber Favaregh of Langley Research Center prepares a model of the Space Launch System rocket for testing with pressure-sensitive paint in a wind tunnel at Ames Research Center. (NASA/Dominic Hart) A rocket is buffeted by a chaotic flow of air during flight. At high speeds, airplanes experience a similar, unsteady flow of air over their wings. A method to precisely measure these fluctuating forces uses pressure-sensitive paint (PSP), called Unsteady PSP, which emits a bright crimson glow in the presence of high-pressure airflow.

Posted in: News, Aerospace, Defense

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Discovery Could Lead to Cleaner, More Efficient Jet Engines

Researchers at The Ohio State University found a way to improve the high-temperature properties of superalloys used in jet engines. The method tailors an alloy’s composition and exposes it to high heat and pressure to prevent microscopic defects from forming, actually making the alloy stronger. This “phase transformation strengthening” eliminates the formation of defects and decreases alloy deformation by half. When an engine can run at very high temperatures, it consumes its fuel more thoroughly and produces lower emissions.

Posted in: News, Aerospace, Aviation, Defense

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NRL Develops Novel Monolayer Ferroelectric Hybrid Structures

Domains consisting of electric polarization dipoles are written in a checkerboard pattern into a thin film of lead zirconium titanate (PZT) with a conductive atomic force microscope, and imaged with the same instrument (left panel). Both intensity and spectral distribution of the photoluminescence emitted from a monolayer of tungsten disulphide (WS2) transferred onto the PZT surface is strongly modulated by these polarization domains (right panel). (U.S. Naval Research Laboratory) Scientists at the U.S. Naval Research Laboratory (NRL), Materials Science and Technology Division, have demonstrated that the intensity and spectral composition of the photoluminescence emitted from a single monolayer of tungsten disulphide (WS2) can be spatially controlled by the polarization domains in an adjacent film of the ferroelectric material lead zirconium titanate (PZT). These domains are written in the PZT using a conductive atomic force microscope, and the photoluminescence (PL) is measured in air at room temperature. Because the polarization domain wall width in a ferroelectric can be as low as 1-10 nm, this approach enables spatial modulation of PL intensity and the corresponding carrier populations with potential for nanoscale resolution.

Posted in: News, Defense, Electronic Components, Electronics, Integrated circuits, Microelectromechanical devices, Microscopy, Semiconductor devices

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