-
1 helicopter aerodynamics
-
2 helicopter aerodynamics
аэродинамика [аэродинамические характеристики] вертолётаEnglsh-Russian aviation and space dictionary > helicopter aerodynamics
-
3 aerodynamics
аэродинамика; аэродинамические характеристикиaerodynamics of high-lift devices — аэродинамические характеристики устройств увеличения подъёмной силы
aerodynamics of shrouded propellers — аэродинамика туннельных винтов [винтов в кольце]
aerodynamics of supersonic flight — аэродинамика сверхзвукового полёта [сверхзвуковых скоростей полёта]
-
4 aerodynamics
1. аэродинамика < наука>2. аэродинамика, аэродинамические характеристикиadvanced aerodynamicsadverse-yaw aerodynamicsairfoil aerodynamicsairframe aerodynamicsbeyond stall aerodynamicscanard aerodynamicscirculation control aerodynamicscomputational aerodynamicsdoublet lattice aerodynamicsexperimental aerodynamicsexternal aerodynamicsfirst-order aerodynamicsflap aerodynamicsforebody aerodynamicsfuselage aerodynamicshelicopter aerodynamicshigh-angle-of-attack aerodynamicsindicial aerodynamicsinteractional aerodynamicsinteractive fan/nacelle aerodynamicslateral aerodynamicslateral-directional aerodynamicslongitudinal aerodynamicslow-speed aerodynamicsmaneuver aerodynamicsnonlinear aerodynamicsoscillatory aerodynamicspiston theory aerodynamicspitch plane aerodynamicspoststall aerodynamicspotential aerodynamicspowered aerodynamicspowered-lift aerodynamicspro-spin aerodynamicsquasisteady aerodynamicsroll orientation-dependent aerodynamicsrotary-wing aerodynamicsrotational flow aerodynamicsrotorcraft aerodynamicsslender-body aerodynamicsslender wing aerodynamicsspoiler aerodynamicssteady aerodynamicsstore aerodynamicsstrip theory aerodynamicssubsonic aerodynamicssupersonic aerodynamicsthree-dimensional aerodynamicsthrust-induced aerodynamicstime-domain aerodynamicstime-variant aerodynamicstransition aerodynamicstransonic aerodynamicsunsteady aerodynamicsV/STOL aerodynamics -
5 aerodynamics helicopter
• aerodinamika helikoptera -
6 aerodinamika helikoptera
• aerodynamics helicopter -
7 Flettner, Anton
SUBJECT AREA: Aerospace[br]b. 1 November 1885 Eddersheim-am-Main, Germanyd. 29 December 1961 New York, USA[br]German engineer and inventor who produced a practical helicopter for the German navy in 1940.[br]Anton Flettner was an engineer with a great interest in hydraulics and aerodynamics. At the beginning of the First World War Flettner was recruited by Zeppelin to investigate the possibility of radio-controlled airships as guided missiles. In 1915 he constructed a small radio-controlled tank equipped to cut barbed-wire defences; the military experts rejected it, but he was engaged to investigate radio-controlled pilotless aircraft and he invented a servo-control device to assist their control systems. These servo-controls, or trim tabs, were used on large German bombers towards the end of the war. In 1924 he invented a sailing ship powered by rotating cylinders, but although one of these crossed the Atlantic they were never a commercial success. He also invented a windmill and a marine rudder. In the late 1920s Flettner turned his attention to rotating-wing aircraft, and in 1931 he built a helicopter with small engines mounted on the rotor blades. Progress was slow and it was abandoned after being damaged during testing in 1934. An autogiro followed in 1936, but it caught fire on a test flight and was destroyed. Undeterred, Flettner continued his development work on helicopters and in 1937 produced the Fl 185, which had a single rotor to provide lift and two propellers on outriggers to combat the torque and provide forward thrust. This arrangement was not a great success, so he turned to twin contra-rotating rotors, as used by his rival Focke, but broke new ground by using intermeshing rotors to make a more compact machine. The Fl 265 with its "egg-beater" rotors was ordered by the German navy in 1938 and flew the following year. After exhaustive testing, Flettner improved his design and produced the two-seater Fl 282 Kolibri, which flew in 1940 and became the only helicopter to be used operationally during the Second World War.After the war, Flettner moved to the United States where his intermeshing-rotor idea was developed by the Kaman Aircraft Corporation.[br]Bibliography1926, Mein Weg zum Rotor, Leipzig; also published as The Story of the Rotor, New York (describes his early work with rotors—i.e. cylinders).Further ReadingW.Gunston and J.Batchelor, 1977, Helicopters 1900–1960, London.R.N.Liptrot, 1948, Rotating Wing Activities in Germany during the Period 1939–45, London.K.von Gersdorff and K.Knobling, 1982, Hubschrauber und Tragschrauber, Munich (a more recent publication, in German).JDS -
8 research
исследование, см. тж. exploration, investigation, study; научно-исследовательские работы -
9 Cayley, Sir George
SUBJECT AREA: Aerospace[br]b. 27 December 1773 Scarborough, Englandd. 15 December 1857 Brompton Hall, Yorkshire, England[br]English pioneer who laid down the basic principles of the aeroplane in 1799 and built a manned glider in 1853.[br]Cayley was born into a well-to-do Yorkshire family living at Brompton Hall. He was encouraged to study mathematics, navigation and mechanics, particularly by his mother. In 1792 he succeeded to the baronetcy and took over the daunting task of revitalizing the run-down family estate.The first aeronautical device made by Cayley was a copy of the toy helicopter invented by the Frenchmen Launoy and Bienvenu in 1784. Cayley's version, made in 1796, convinced him that a machine could "rise in the air by mechanical means", as he later wrote. He studied the aerodynamics of flight and broke away from the unsuccessful ornithopters of his predecessors. In 1799 he scratched two sketches on a silver disc: one side of the disc showed the aerodynamic force on a wing resolved into lift and drag, and on the other side he illustrated his idea for a fixed-wing aeroplane; this disc is preserved in the Science Museum in London. In 1804 he tested a small wing on the end of a whirling arm to measure its lifting power. This led to the world's first model glider, which consisted of a simple kite (the wing) mounted on a pole with an adjustable cruciform tail. A full-size glider followed in 1809 and this flew successfully unmanned. By 1809 Cayley had also investigated the lifting properties of cambered wings and produced a low-drag aerofoil section. His aim was to produce a powered aeroplane, but no suitable engines were available. Steam-engines were too heavy, but he experimented with a gunpowder motor and invented the hot-air engine in 1807. He published details of some of his aeronautical researches in 1809–10 and in 1816 he wrote a paper on airships. Then for a period of some twenty-five years he was so busy with other activities that he largely neglected his aeronautical researches. It was not until 1843, at the age of 70, that he really had time to pursue his quest for flight. The Mechanics' Magazine of 8 April 1843 published drawings of "Sir George Cayley's Aerial Carriage", which consisted of a helicopter design with four circular lifting rotors—which could be adjusted to become wings—and two pusher propellers. In 1849 he built a full-size triplane glider which lifted a boy off the ground for a brief hop. Then in 1852 he proposed a monoplane glider which could be launched from a balloon. Late in 1853 Cayley built his "new flyer", another monoplane glider, which carried his coachman as a reluctant passenger across a dale at Brompton, Cayley became involved in public affairs and was MP for Scarborough in 1832. He also took a leading part in local scientific activities and was co-founder of the British Association for the Advancement of Science in 1831 and of the Regent Street Polytechnic Institution in 1838.[br]BibliographyCayley wrote a number of articles and papers, the most significant being "On aerial navigation", Nicholson's Journal of Natural Philosophy (November 1809—March 1810) (published in three numbers); and two further papers with the same title in Philosophical Magazine (1816 and 1817) (both describe semi-rigid airships).Further ReadingL.Pritchard, 1961, Sir George Cayley, London (the standard work on the life of Cayley).C.H.Gibbs-Smith, 1962, Sir George Cayley's Aeronautics 1796–1855, London (covers his aeronautical achievements in more detail).—1974, "Sir George Cayley, father of aerial navigation (1773–1857)", Aeronautical Journal (Royal Aeronautical Society) (April) (an updating paper).JDS
См. также в других словарях:
Helicopter — For other uses, see Helicopter (disambiguation). Helicopter An LAPD Bell 206 … Wikipedia
Helicopter rotor — This article is about helicopter main rotor systems. For antitorque control, see tail rotor. Helicopter rotor The rotor head of a Sikorsky S 92 A helicopter main rotor or rotor system is a type of fan that is used to generate both the aerodynamic … Wikipedia
Helicopter — Sikorsky S 61 Sea King der Dänischen Marine Ein Hubschrauber (vor allem in der Schweiz auch: Helikopter, abgekürzt: Heli, zu griech. hélix, Gen. hélikos „Windung, Spirale und pterón „Flügel“; engl. helicopter) ist ein Luftfahrzeug, das durch… … Deutsch Wikipedia
Helicopter — Hélicoptère Pour le fruit en forme d aile tombant en spirale, voir Samare. Hélicoptère de secours E … Wikipédia en Français
helicopter — /hel i kop teuhr, hee li /, n. 1. any of a class of heavier than air craft that are lifted and sustained in the air horizontally by rotating wings or blades turning on vertical axes through power supplied by an engine. v.i. 2. to fly in a… … Universalium
De Bothezat helicopter — de Bothezat The Flying Octopus Role Experimental rotorcraft Manufacturer … Wikipedia
Cornu helicopter — Role Experimental aircraft Manufacturer Paul Cornu Designer Paul Cornu … Wikipedia
Curtiss-Bleecker SX-5-1 Helicopter — Curtiss Bleecker Helicopter Role Helicopter National origin Uni … Wikipedia
Load factor (aerodynamics) — Load factor is the ratio of the lift on an aircraft to the weight of the aircraft.Clancy, L.J., Aerodynamics , section 5.22] Hurt, H.H., Aerodynamics for Naval Aviators , page 37] The load factor is expressed in multiples of g where one g… … Wikipedia
Radio-controlled helicopter — Nitro powered Align T Rex 600 NSP Electric powered Venom Ai … Wikipedia
Swashplate (helicopter) — This article is about the swashplate in helicopters, see also the swashplate article which describes all uses of the mechanism. A swashplate is a device that translates the pilot s (or autopilot s) commands via the helicopter flight controls into … Wikipedia