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: INSIDER, News, Aerospace, Aviation, Defense

NRL Develops Novel Monolayer Ferroelectric Hybrid Structures

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

US Navy Synthesizes Slime to Assist Military Personnel

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

Satellite Communications Ball Offers More Bandwidth, Greater Portability

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

Army Demonstrates Hoverbike Prototype

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

3D Printers Create Tomorrow’s Rocket Engines

Startup company Tri-D Dynamics LLC, a startup with ties to Purdue University, plans to use 3D printers as well as other additive manufacturing processes to make future rocket engines that show promise in being faster and less expensive to produce than traditional methods. The 3D printer would create small rocket engines for satellites.

Posted in: News, Aerospace, Defense, Manufacturing & Prototyping, Rapid Prototyping & Tooling

Nano-Modified Aerospace Composites Have Improved Conductivity

Research indicates the potential of a carbon fiber reinforced plastic that is made multifunctional while still maintaining its structural integrity. Novel functionality including sensors, energy harvesting, lighting, and communication antennae can now be integrated into the structure of the composite to usher in a new era in composite technology.

Posted in: News, Aerospace

Simulation Software Improves Pilot Training

Providing pilots with the best possible preparation for extreme situations is the goal of new simulation software. The program that combines flow mechanics and flight dynamics in real time. The numerical model is extremely flexible and does not depend on stored flow data. External conditions such as topography, global wind speeds, and aircraft type are input. During the simulation, the algorithms use that data to continuously compute the interacting flow field at the virtual aircraft’s current location.

Posted in: News, Aerospace, Simulation Software

Professor Simulates Bomb Blasts to Study How Things Break Apart

How much force does it take to shatter a Humvee, a soldier’s body armor, or a submarine?

Posted in: News, Research Lab

High-Speed, Autonomous Surface Patrol Capability Demonstrated

After a year of internal research and development, the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, recently conducted a large, at-sea demonstration of swarming unmanned surface vessels (USV). The experiment — done in collaboration with the Surface Targets Branch of the Naval Air Warfare Center Weapons Division, Port Hueneme, California — was designed to advance the state of the art of collaborative, autonomous USV behaviors to higher speeds and a larger numbers of vessels.

Posted in: News, Robotics