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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.
On 11 December 1951, the Kaman K-225 became the first turbine-powered helicopter in the world. Two years later, on 26 March 1954, a modified Navy HTK-1, another Kaman helicopter, became the first twin-turbine helicopter to fly. [96] However, it was the Sud Aviation Alouette II that would become the first helicopter to be produced with a turbine ...
First helicopter to the North Pole: was a Bell Jetranger III flown by Dick Smith on April 28, 1987. [248] Tupolev Tu-155, the first aircraft to fly solely on hydrogen. First flight by an aircraft fuelled only with hydrogen: was made by a Tupolev Tu-155 (a modified Tu-154 airliner) powered only by hydrogen on April 15, 1988. [249]
The V1's first untethered flight was on 3 August 1940, after over 100 hours of ground and tethered testing. [9] In October, it was flown to the test centre at Rechlin to be demonstrated, and while there set a top speed of 182 km/h (113 mph), a climb rate of 528 m (1,732 ft) per minute, and a maximum altitude of 7,100 m (23,300 ft), [9] performance far greater than had been demonstrated by any ...
The United States Marine Corps ' s first transport helicopter squadron, Marine Transport Helicopter Squadron 161 (HMR-161), conducts history's first mass helicopter resupply mission in Operation Windmill I, lifting 18,484 pounds (8,384 kg) of equipment to a U.S. Marine Corps battalion on the front line in Korea and evacuating 74 casualties, all ...
The first "free" flight of the VS-300 was on 13 May 1940. [2] The VS-300 was the first successful single lifting rotor helicopter in the United States and the first successful helicopter to use a single vertical-plane tail rotor configuration for antitorque. With floats attached, it became the first practical amphibious helicopter.
The Focke-Wulf Fw 61 was the first successful, practical, and fully controllable helicopter, first flown in 1936. [ 2 ] [ 3 ] [ 4 ] It was also known as the Fa 61 , as Focke began a new company— Focke-Achgelis —in 1937.
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 ...