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 ...

From Archimedes’ screw to Leonardo da Vinci's helicopter, Ancient Greek mechanics inspired the dream of human flight.

The Sikorsky R-4 was the first helicopter used in U.S. combat operations. At a time when vertical flight was still ...

The Army this week accepted its first optionally piloted Black Hawk helicopter, a modified version of Sikorsky’s workhorse utility chopper that can be flown by pilots in the cockpit or by troops on ...

82 years ago today, a U.S. Coast Guard pilot flew history’s first helicopter rescue mission. On January 3, 1944, Coast Guard Pilot Frank Erickson flew straight into the teeth of a raging storm to ...

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 ...