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The Sikorsky R-4 is a two-seat helicopter that was designed by Igor Sikorsky with a single, three-bladed main rotor and powered by a radial engine. 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 ...
Platt-LePage XR-1 (experimental helicopter) Sikorsky R-4B "Hoverfly" (general helicopter) Sikorsky YR-4B "Hoverfly", version of R-4, known as HNS-1 in Navy service (ambulance/sea patrol helicopter) Sikorsky R-6 (rescue/reconnaissance helicopter) Sikorsky R-5A (rescue/reconnaissance helicopter) Vought-Sikorsky VS-300 (experimental helicopter)
Sikorsky R-4: Sikorsky Aircraft Corporation: 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
Sikorsky Aircraft is an American aircraft manufacturer based in Stratford, Connecticut. ... After first flying the VS-300 he developed the Sikorsky R-4, ...
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 with harsh terrain. Total production reached 131 helicopters before the R-4 was replaced by other Sikorsky helicopters such as the R-5 and the R-6 ...
The 1ACG operated six Sikorsky R-4 helicopters primarily for air rescue and medical evacuation. When the United States Air Force was established as a separate service in 1947, the Army developed its light planes and rotary wing aircraft to support its ground operations.
Caudron R.4, World War I French reconnaissance aircraft, first flown in 1915 Curtiss R-4, air ambulance version of the American Curtiss Model R utility aircraft, first flown in 1915 Sikorsky R-4 , American helicopter, first flown in 1942
Carle flew one of his ship's Sikorsky R-4 helicopters and landed near the front lines, much to the amazement of the soldiers, who had never seen a helicopter. Under the best of conditions, the R-4 could carry, in addition to the pilot and fuel, only 195 pounds (88 kg), which meant only instruments and small components such as propeller hubs.
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