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1 American Helicopter Company
Abbreviation: AHCУниверсальный русско-английский словарь > American Helicopter Company
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2 Sikorsky, Igor Ivanovich
SUBJECT AREA: Aerospace[br]b. 25 May 1889 Kiev, Ukrained. 26 October 1972 Easton, Connecticut, USA[br]Russian/American pioneer of large aeroplanes, flying boats, and helicopters.[br]Sikorsky trained as an engineer but developed an interest in aviation at the age of 19 when he was allowed to spend several months in Paris to meet French aviators. He bought an Anzani aero-engine and took it back to Russia, where he designed and built a helicopter. In his own words, "It had one minor technical problem—it would not fly—but otherwise it was a good helicopter".Sikorsky turned to aeroplanes and built a series of biplanes: by 1911 the 5–5 was capable of flights lasting an hour. Following this success, the Russian-Baltic Railroad Car Company commissioned Sikorsky to build a large aeroplane. On 13 May 1913 Sikorsky took off in the Grand, the world's first four-engined aeroplane. With a wing span of 28 m (92 ft) it was also the world's largest, and was unique in that the crew were in an enclosed cabin with dual controls. The even larger Ilia Mourometz flew the following year and established many records, including the carriage of sixteen people. During the First World War many of these aircraft were built and served as heavy bombers.Following the revolution in Russia during 1917, Sikorsky emigrated first to France and then the United States, where he founded his own company. After building the successful S-38 passenger-carrying amphibian, the Sikorsky Aviation Corporation became part of the United Aircraft Corporation and went on to produce several large flying boats. Of these, the four-engined S-42 was probably the best known, for its service to Hawaii in 1935 and trial flights across the Atlantic in 1937.In the late 1930s Sikorsky once again turned his attention to helicopters, and on 14 September 1939 his VS-300 made its first tentative hop, with Sikorsky at the controls. Many improvements were made and on 6 May 1941 Sikorsky made a record-breaking flight of over 1½ hours. The Sikorsky design of a single main lifting rotor combined with a small tail rotor to balance the torque effect has dominated helicopter design to this day. Sikorsky produced a long series of outstanding helicopter designs which are in service throughout the world.[br]Principal Honours and DistinctionsChevalier de la Légion d'honneur 1960. Presidential Certificate of Merit 1948. Aeronautical Society Silver Medal 1949.Bibliography1971, "Sixty years in flying", Aeronautical Journal (Royal Aeronautical Society) (November) (interesting and amusing).1938, The Story of the Winged S., New York; 1967, rev. edn.Further ReadingD.Cochrane et al., 1990, The Aviation Careers of Igor Sikorsky, Seattle.K.N.Finne, 1988, Igor Sikorsky: The Russian Years, ed. C.J.Bobrow and V.Hardisty, Shrewsbury; orig. pub. in Russian, 1930.F.J.Delear, 1969, Igor Sikorsky: His Three Careers in Aviation, New York.JDSBiographical history of technology > Sikorsky, Igor Ivanovich
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3 Breguet, Louis
SUBJECT AREA: Aerospace[br]b. 2 January 1880 Paris, Franced. 4 May 1955 Paris, France[br]French aviation pioneer who built a helicopter in 1907 and designed many successful aircraft.[br]The Breguet family had been manufacturing fine clocks since before the French Revolution, but Louis Breguet and his brother Jacques used their mechanical skills to produce a helicopter, or "gyroplane" as they named it. It was a complex machine with four biplane rotors (i.e. thirty-two lifting surfaces). Louis Breguet had carried out many tests to determine the most suitable rotor design. The Breguet brothers were assisted by Professor Charles Richet and the Breguet-Richet No. 1 was tested in September 1907 when it succeeded in lifting itself, and its pilot, to a height of 1.5 metres. Unfortunately, the gyroplane was rather unstable and four helpers had to steady it; consequently, the flight did not qualify as a "free" flight. This was achieved two months later, also in France, by Paul Cornu who made a 20-second free flight.Louis Breguet turned his attention to aeroplane design and produced a tractor biplane when most other biplanes followed the Wright brothers' layout with a forward elevator and pusher propeller. The Breguet I made quite an impression at the 1909 Reims meeting, but the Breguet IV created a world record the following year by carrying six people. During the First World War the Breguet Type 14 bomber was widely used by French and American squadrons. Between the First and Second World Wars a wide variety of designs were produced, including flying boats and another helicopter, the Breguet- Dorand Gyroplane which flew for over one hour in 1936. The Breguet company survived World War II and in the late 1940s developed a successful four-engined airliner/transport, the Deux-Ponts, which had a bulbous double-deck fuselage.Breguet was an innovative designer, although his designs were functional rather than elegant. He was an early advocate of metal construction and developed an oleo- (oil-spring) undercarriage leg.[br]Bibliography1925, Le Vol à voile dynamique des oiseaux. Analyse des effets des pulsations du vent sur la résultante aérodynamique moyenne d'un planeur, Paris.Further ReadingP.Faure, 1938, Louis Breguet, Paris (biography).C.H.Gibbs-Smith, 1965, The Invention of the Aeroplane 1799–1909, London (provides a careful analysis of Breguet's early aircraft).JDS
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