R-4 | Helicopter - Britannica

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Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos R-4 References Images A photo of the Sikorsky R-4, the world's first production helicopter. Britannica AI Icon Contents R-4 helicopter Ask Anything Homework Help Also known as: Sikorsky R-4 Britannica AI Icon Britannica AI Ask Anything

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development of military aircraft

  • Assembly of the Boeing 787 In aerospace industry: Between the wars

    Army in 1944, Sikorsky’s R-4 became the world’s first production helicopter.

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  • Tupolev Tu-22M, a Russian variable-wing supersonic jet bomber first flown in 1969. It was designed for potential use in war against the NATO countries, where it was known by the designation “Backfire.” In military aircraft: Helicopters

    The Sikorsky R-4, powered by a single lifting rotor and an antitorque tail rotor, was used for local rescue duties at U.S. air bases in the Pacific and was also used in several combat rescues in Burma. The German navy used a handful of Flettner Fl 282s,…

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United Technologies Corporation

  • A Sikorsky Cypher unmanned aerial vehicle developed by United Technologies Corp,, shown hovering during a test flight in 1999. In United Technologies Corporation: Sikorsky

    The production version, the R-4, became the world’s first helicopter built in quantity and served in World War II.

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