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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 and ...
Website. sikorsky.com. Sikorsky Aircraft is an American aircraft manufacturer based in Stratford, Connecticut. It was established by the Ukrainian-American aviation pioneer Igor Sikorsky in 1923, and was among the first companies to manufacture helicopters for civilian and military use.
United States Army. Number built. 2. History. First flight. July 26, 1973. Retired. 1981. The Sikorsky S-69 (military designation XH-59) is an American experimental compound helicopter developed by Sikorsky Aircraft as the demonstrator of the co-axial Advancing Blade Concept (ABC) with United States Army and NASA funding.
Sikorsky allotted their Model 49 designation to the new design. Later, dynamically balanced modifications to the rotor were carried out by Doman Helicopters Inc. The new aircraft could attain 100 mph (160 km/h) compared with 82 mph (132 km/h) by the earlier design. Initial production was by Sikorsky, but most examples were built by Nash ...
Sikorsky Raider X. The Sikorsky S-97 Raider is a high-speed scout and attack compound helicopter [2] based on the Advancing Blade Concept (ABC) with a coaxial rotor system [3] under development by Sikorsky Aircraft. Sikorsky planned to offer it for the United States Army 's Armed Aerial Scout program, along with other possible uses. [4]
The Sikorsky S-75 was developed under the US Army's Advanced Composite Airframe Program (ACAP), the goal of which was the development of an all-composite helicopter fuselage, lighter and less costly to build than predominantly metal airframes in support of the Light Helicopter Experimental (LHX) program. [1][2] In February 1981, contracts were ...
Igor Sikorsky. History. First flight. 14 September 1939 [1] Developed into. Sikorsky R-4. The Vought-Sikorsky VS-300 (or S-46) is an American single-engine helicopter designed by Igor Sikorsky. It had a single three-blade rotor originally powered by a 75 horsepower (56 kW) engine. The first "free" flight of the VS-300 was on 13 May 1940. [2]
Developed into. Sikorsky S-61R. Sikorsky S-67 Blackhawk. SH-3 Sea King dipping a sonar, 1983. The Sikorsky SH-3 Sea King (company designation S-61) is an American twin-engined anti-submarine warfare (ASW) helicopter designed and built by Sikorsky Aircraft. A landmark design, it was one of the first ASW rotorcraft to use turboshaft engines.