Add Yahoo as a preferred source to see more of our stories on Google. Sikorsky team members remove a recently delivered T901 engine from it shipping crate at the Sikorsky facility in West Palm Beach ...

Sikorsky team members remove a T901 engine from it shipping crate at the Sikorsky facility in West Palm Beach, Florida. (David Hylton/U.S. Army) The U.S. Army has not yet terminated the Improved ...

A US Army UH-60 Black Hawk (left) and an AH-64D Apache helicopter at Camp Marmal, Afghanistan, at the foot of the Hindu Kush mountains, in 2012. In February, the US Army leadership inexplicably ...

PARIS—A key milestone for the Pentagon’s program to upgrade the F-35 engine has been pushed back a year, raising questions about the overall timeline of the effort. The engine upgrade will reach ...

NASHVILLE, Tenn. − For the first time, the Army's UH-60M Black Hawk utility helicopter lifted off the ground into a hover at a Sikorsky test facility, powered by the improved turbine engine that has ...