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  2. Helicopter - Wikipedia

    en.wikipedia.org/wiki/Helicopter

    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. [92] However, it was the Sud Aviation Alouette II that would become the first helicopter to be produced with a turbine ...

  3. Sikorsky R-4 - Wikipedia

    en.wikipedia.org/wiki/Sikorsky_R-4

    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 ...

  4. Focke-Wulf Fw 61 - Wikipedia

    en.wikipedia.org/wiki/Focke-Wulf_Fw_61

    Nazi Germany. Number built. 2 [1] History. Introduction date. 1936. First flight. 26 June 1936. 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.

  5. Igor Sikorsky - Wikipedia

    en.wikipedia.org/wiki/Igor_Sikorsky

    Igor Sikorsky was born in Kiev, Russian Empire (now Kyiv, Ukraine) on May 25, 1889. [6] [10] [11] He was the youngest of five children.His father, Ivan Alexeevich Sikorsky, was a professor of psychology in Saint Vladimir University (now Taras Shevchenko National University), a psychiatrist with an international reputation, and an ardent Russian nationalist.

  6. Henrich Focke - Wikipedia

    en.wikipedia.org/wiki/Henrich_Focke

    Henrich Focke. Henrich Focke (8 October 1890 – 25 February 1979) was a German aviation pioneer from Bremen and also a co-founder of the Focke-Wulf company. He is best known as the inventor of the Fw 61, the first successful German helicopter.

  7. Military helicopter - Wikipedia

    en.wikipedia.org/wiki/Military_helicopter

    Military helicopter. A UH-60 Black Hawk operated by the Royal Jordanian Air Force. A military helicopter is a helicopter that is either specifically built or converted for use by military forces. A military helicopter's mission is a function of its design or conversion. The most common use of military helicopters is transport of troops, but ...

  8. Cessna CH-1 Skyhook - Wikipedia

    en.wikipedia.org/wiki/Cessna_CH-1_Skyhook

    1956. First flight. July 1953 [1] Developed from. Seibel S-4. The Cessna CH-1 Skyhook is the only helicopter ever built by the Cessna Aircraft Company. It was the first helicopter to land on the summit of Pike's Peak and the last piston-engined helicopter to set the helicopter altitude record. The CH-1 had a single, two-bladed main rotor, and a ...

  9. Vought-Sikorsky VS-300 - Wikipedia

    en.wikipedia.org/wiki/Vought-Sikorsky_VS-300

    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.