Abstract: The critical velocity effect of electromagnetic railguns refers to the high amplitude stresses and strains that occur in the rail when the projectile velocity reaches a threshold value. This ...

The US Navy was never able to work out how to build a reliable railgun. Japan apparently has. Way back in 2005, as America was still enjoying its “unipolar moment,” the United States Navy began its ...

Javascript must be enabled to use this site. Please enable Javascript in your browser and try again. Open Enrollment Help. Medicare can be complicated. But it doesn ...

College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi’an ...

A supercar with royal history is heading to auction this December, and it’s one that’s guaranteed to attract global attention. While several McLaren F1s have surfaced this year, this 1994 example ...

A U.S. Air Force crew chief with the 174th Attack Wing checks an MQ-9 Reaper on Mar. 10, 2025 at Springfield-Beckley Air National Guard Base in Springfield, Ohio. The MQ-9 were there for the two-week ...

Western militaries can’t keep shooting down incoming drones with expensive missiles, NATO Secretary General Mark Rutte said on Thursday, adding that NATO is rapidly learning from Ukraine on how to ...

Hurricanes are powerful storms that can cause significant damage. Having a hurricane survival kit prepared can help you and your family stay safe and comfortable if a hurricane hits. Putting together ...