Scientists have improved a promising battery technology, creating a single-crystal, nickel-rich cathode that is hardier and more efficient than before. It's one step toward improved lithium-ion batteries that are common in electric vehicles today. Increasing nickel content in the cathode is on the drawing board of lithium-ion battery makers largely because of its relatively low cost, wide availability and low toxicity compared to other key battery materials, such as cobalt.
Additive manufacturing (AM) machinery has advanced over time, however, the necessary software for new machines often lags behind. To help mitigate this issue, Penn State researchers designed an automated process planning software to save money, time and design resources.
The U.S. Army Combat Capabilities Development Command's, now referred to as DEVCOM, Army Research Laboratory collaborated with researchers at Rensselaer Polytechnic Institute to create a trajectory planner that significantly shortens the time it takes for VTOL tail-sitter drones to make this crucial transition. The team designed the trajectory planner specifically for the Army's Common Research Configuration platform, a quadrotor biplane tail-sitter used to test new design features and study fundamental aerodynamics.
A University of Washington-led team has developed Smellicopter: an autonomous drone that uses a live antenna from a moth to navigate toward smells. Smellicopter can also sense and avoid obstacles as it travels through the air.
NORFOLK, Va. -- After more than three years in development, a team of U.S. Army researchers and industry partners completed the construction of a testbed that will help to inform the design of future Army rotorcraft. The team plans to test the TiltRotor Aeroelastic Stability Testbed, or TRAST in a massive wind tunnel at the NASA Langley Research Center to gauge the effectiveness of modern tiltrotor stability models.
It's no secret the US Army wants its small unmanned aerial systems to operate quietly in densely-populated regions, but tests to achieve this can be expensive, time-consuming and labor-intensive according to researchers.
Using public data from the entire 1,500-square-mile Los Angeles metropolitan area, PNNL researchers reduced the time needed to create a traffic congestion model by an order of magnitude, from hours to minutes.
Imagine a silent helicopter stealthily moving troops and supplies around a future battlefield. U.S. Army researchers look to helicopter noise reduction technology as a top priority in aircraft design. At the U.S. Army Combat Capabilities Development Command, now known as DEVCOM, Army Research Laboratory, researchers collaborated with Uber and the University of Texas at Austin to investigate the acoustic properties of electric vertical takeoff and landing aircraft, which use distributed electric propulsion to power flight.
A University of Toronto Engineering study is underscoring the importance of drivers keeping their eyes on the road -- even when they are in an automated vehicle (AV). The findings, published recently in the journal Accident Analysis & Prevention, revealed that drivers can become over-reliant on AV technology. This was especially true with a type of in-vehicle display the team coined as takeover request and automation capability (TORAC).
Researchers at the University of Maryland, Baltimore County (UMBC) have worked to create methods for improving the safety of technologically complex vehicles. Riadul Islam, assistant professor of computer science and electrical engineering, has worked with collaborators at UMBC and the University of Michigan-Dearborn to create a simple, easily adapted method for detecting the breaches in security.