The U.S. Army has received its first autonomous UH-60MX Black Hawk, built with Sikorsky, marking a key milestone in military ...

Add Yahoo as a preferred source to see more of our stories on Google. Lt. John Kelvin Koelsch (Navy) First used by the 1st Air Commando in World War II, the Sikorsky R-4 often fell short of its role ...

CAPE CANAVERAL, Fla. (AP) — NASA’s experimental helicopter Ingenuity rose into the thin air above the dusty red surface of Mars on Monday, achieving the first powered flight by an aircraft on another ...

First used by the 1st Air Commando in World War II, the Sikorsky R-4 often fell short of its role in rescuing airmen downed in the mountains and rainforests of the China-Burma-India front but as the ...