Abstract: Compared with three-level inverters, four-level inverters need more switching times to balance the dc-link capacitor voltages, lowering the efficiency. This article proposes a four-level ...

ATLANTA, Jan. 5, 2026 /PRNewswire/ -- The Veterans Training Empowerment Center (VTEC), a 501(c)(3) nonprofit dedicated to military workforce development and an approved U.S. Army Career Skills Program ...

The US Army has awarded Boeing a $2.7 billion contract relating to post-production support services for Apache helicopters, the Pentagon announced on December 31, 2025. The firm fixed-price contract, ...

In his most recent Substack newsletter, Scott Snyder has been talking about 2025 as well as what's to come in 2026, about the presence of Absolute Batman and the Absolute line at DC Comics. "But now ...

Over 60 years ago, Bell Helicopter transformed the UH-1 Huey into the AH-1 Cobra, creating the first helicopter designed specifically for combat. From its secretive development in the 1960s to the ...

AC/DC had just been through a pivotal moment in the band’s history. Their original vocalist, Bon Scott, died and was replaced by Brian Johnson. Their 1980 album, Back in Black, served as a tribute to ...