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The R-4 was the world's first large-scale mass-produced helicopter and the first helicopter used by the United States Army Air Forces, [1] the United States Navy, the United States Coast Guard and the United Kingdom's Royal Air Force and Royal Navy. In U.S. Navy and U.S. Coast Guard service, the helicopter was known as the Sikorsky HNS-1.
A radio-controlled helicopter (also RC helicopter) is model aircraft which is distinct from a RC airplane because of the differences in construction, aerodynamics, and flight training. Several basic designs of RC helicopters exist, of which some (such as those with collective pitch control) are more maneuverable than others.
Developed from the VS-300, Sikorsky's R-4 of 1942 was the first large-scale mass-produced helicopter, with a production order for 100 aircraft. The R-4 was the only Allied helicopter to serve in World War II, used primarily for search and rescue (by the USAAF 1st Air Commando Group ) in the Burma campaign ; [ 95 ] in Alaska; and in other areas ...
The first free flight of Ship 1 was carried out on June 26, 1943, [4] only the third American helicopter to fly. [5] The Ship 1 prototype registration NX41860 had an open cockpit, an enclosed fuselage for the Franklin piston engine, and fixed three-wheel landing gear. [2] The engine drove a two-bladed main rotor and a two-bladed anti-torque ...
World's first large-scale mass-produced helicopter and the first helicopter used by the United States Army Air Forces. [2] 1942 Unknown 131 Sikorsky H-5: Sikorsky Aircraft Corporation 1943 1945 300 Sikorsky R-6: Sikorsky Aircraft Corporation World War II 1943 1945 225 Kellett R-8: Experimental helicopter Kellett Autogiro Corporation: Prototype.
The Sikorsky S-70 is an American medium transport/utility helicopter family manufactured by Sikorsky Aircraft.It was developed for the United States Army in the 1970s, winning a competition to be designated the UH-60 Black Hawk and spawning a large family in U.S. military service.