News

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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US Navy Synthesizes Slime to Assist Military Personnel

Dr. Ryan Kincer demonstrates the elasticity of the hagfish slime secreted from the the Pacific hagfish within the net aboard Naval Surface Warfare Center Panama City Division (NSWC PCD). (U.S. Navy photo by Ron Newsome (Released) 161129-N-PB086-014) A team of U.S. Navy scientists and engineers at Naval Surface Warfare Center, Panama City Division (NSWC PCD) have successfully re-created a natural material used for marine wildlife defense to assist military personnel.

Posted in: News, Defense, Coatings & Adhesives, Materials, Biomaterials, Elastomers, Fibers, Materials properties

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Satellite Communications Ball Offers More Bandwidth, Greater Portability

Signal Soldiers of the 369th Sustainment Brigade practice aligning a Ground Antenna Transmit Receive (GATR) Ball at Camp Arifjan, Kuwait. The GATR Ball is a portable satellite communications system that can be deployed to remote areas in a relatively short amount of time. (Photo Credit: Sgt. Jeremy Bratt) While it may resemble a giant beach ball, the inflatable ground antenna transmit and receive (GATR) ball is actually the Army's latest piece of satellite communications equipment. The technology is so new that the 369th Sustainment Brigade's GATR ball has a serial number in the single digits. Designed to be lighter and more compact than traditional, rigid satellite dishes, the GATR ball can be broken down into just a few cases and hand carried anywhere in the world. The self-contained system can then be inflated and set up in less than two hours, ready to provide a variety of communication services.

Posted in: News, Communications, Wireless, Defense, Antennas, Data acquisition and handling, Data exchange, Electronic equipment, Radio equipment, Telecommunications, Telecommunications systems, Wireless communication systems

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Army Demonstrates Hoverbike Prototype

A JTARV Model P-200 is demonstrated. (U.S. Army photo: Jhi Scott) The US Army demonstrated the flying capabilities of a unique rectangular-shaped quadcopter. The Joint Tactical Aerial Resupply Vehicle (JTARV), also known as a hoverbike, may one day make it possible for soldiers on the battlefield to order resupply and then receive those supplies rapidly.

Posted in: News, Aeronautics, Aerospace, Defense

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