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  • 61 ресурс


    (service) life /period, inter-
    (наработка изделия с начала эксплуатации в часах, летных часах, количестве включений/выключений, запусков, циклов) — val/
    конструкция двигателя должна обеспечивать его безотказную работу в течение (технического) ресурса. — engine design and construction must minimize the development of unsafe condition of the engine between overhaul periods.
    - (общий термин, применяемый в нлг) — service life
    - (срок службы неремонтируемого изделия) — service life
    - (срок замены агрегата или узла) — replacement life
    - двигателя — engine overhaul life /period, interval/
    - до 2-го (и последующего) ремонта (межремонтный) — (service) life between overhauls (l.b.o.)
    - до капитального ремонта — overhaul life /period/
    - до очередного капитальноro ремонта — life between overhauls (l.b.o.)
    - до очередного (первого) капитального ремонта — (first) overhaul life, life to first overhaul
    - до l-ro ремонта — life to lst overhaul
    - до списания — (service) life till discarded
    - и срок службы (общий термин для нлг) — service lives
    -, межремонтный — life between overhauls (l.b.o.)
    -, назначенный — assigned (service) life
    -, назначенный при 2-х ремонтах — assigned (service) life with 2 overhauls
    -, общетехнический — total (service) life
    -, общий технический — total (service) life
    -, ограниченный (отдельной детали или узла, пониженный по сравнению с ресурсом двигателя или агрегата) — replacement life. probability of catastrophic fatigue failure is extremely remote within а replacement life.
    -, полный технический — service life
    -, послеремонтный (до след. ремонта) — life between overhauls (l.b.o.)
    - по состоянию — оn-condition service life
    - по условиям выносливости — fatigue life
    -, предполагаемый — intended service life

    the unit саn serve out its next intended life.
    -, расчетный — estimated (service) life
    -, расчетный (номинальный) — rated life
    -, расчетный межремонтный — estimated life between overhauls
    -, (100)-часовой межремонтный — (100)-hour life between overhauls, (100)-hour l.b.o.
    -, эксплуатационный выработка, истечение к-л. реcypсa ранее к-л. срока службы (или наоборот) — operating /operational/ life whichever is attained first
    на протяжении всего р. — throughout the entire service life
    no истечении p. — on expiration of service life
    продление p. — extension of service life
    отработать p. (в эксплуатации) — serve out service life (in operation)
    продлять p. — extend /prolong/ service life

    Русско-английский сборник авиационно-технических терминов > ресурс

  • 62 Bramah, Joseph

    [br]
    b. 2 April 1749 Stainborough, Yorkshire, England
    d. 9 December 1814 Pimlico, London, England
    [br]
    English inventor of the second patented water-closet, the beer-engine, the Bramah lock and, most important, the hydraulic press.
    [br]
    Bramah was the son of a tenant farmer and was educated at the village school before being apprenticed to a local carpenter, Thomas Allot. He walked to London c.1773 and found work with a Mr Allen that included the repair of some of the comparatively rare water-closets of the period. He invented and patented one of his own, which was followed by a water cock in 1783. His next invention, a greatly improved lock, involved the devising of a number of special machine tools, for it was one of the first devices involving interchangeable components in its manufacture. In this he had the help of Henry Maudslay, then a young and unknown engineer, who became Bramah's foreman before setting up business on his own. In 1784 he moved his premises from Denmark Street, St Giles, to 124 Piccadilly, which was later used as a showroom when he set up a factory in Pimlico. He invented an engine for putting out fires in 1785 and 1793, in effect a reciprocating rotary-vane pump. He undertook the refurbishment and modernization of Norwich waterworks c.1793, but fell out with Robert Mylne, who was acting as Consultant to the Norwich Corporation and had produced a remarkably vague specification. This was Bramah's only venture into the field of civil engineering.
    In 1797 he acted as an expert witness for Hornblower \& Maberley in the patent infringement case brought against them by Boulton and Watt. Having been cut short by the judge, he published his proposed evidence in "Letter to the Rt Hon. Sir James Eyre, Lord Chief Justice of the Common Pleas…etc". In 1795 he was granted his most important patent, based on Pascal's Hydrostatic Paradox, for the hydraulic press which also incorporated the concept of hydraulics for the transmission of both power and motion and was the foundation of the whole subsequent hydraulic industry. There is no truth in the oft-repeated assertion originating from Samuel Smiles's Industrial Biography (1863) that the hydraulic press could not be made to work until Henry Maudslay invented the self-sealing neck leather. Bramah used a single-acting upstroking ram, sealed only at its base with a U-leather. There was no need for a neck leather.
    He also used the concept of the weight-loaded, in this case as a public-house beer-engine. He devised machinery for carbonating soda water. The first banknote-numbering machine was of his design and was bought by the Bank of England. His development of a machine to cut twelve nibs from one goose quill started a patent specification which ended with the invention of the fountain pen, patented in 1809. His coach brakes were an innovation that was followed bv a form of hydropneumatic carriage suspension that was somewhat in advance of its time, as was his patent of 1812. This foresaw the introduction of hydraulic power mains in major cities and included the telescopic ram and the air-loaded accumulator.
    In all Joseph Bramah was granted eighteen patents. On 22 March 1813 he demonstrated a hydraulic machine for pulling up trees by the roots in Hyde Park before a large crowd headed by the Duke of York. Using the same machine in Alice Holt Forest in Hampshire to fell timber for ships for the Navy, he caught a chill and died soon after at his home in Pimlico.
    [br]
    Bibliography
    1778, British patent no. 1177 (water-closet). 1784, British patent no. 1430 (Bramah Lock). 1795, British patent no. 2045 (hydraulic press). 1809, British patent no. 3260 (fountain pen). 1812, British patent no. 3611.
    Further Reading
    I.McNeil, 1968, Joseph Bramah, a Century of Invention.
    S.Smiles, 1863, Industrial Biography.
    H.W.Dickinson, 1942, "Joseph Bramah and his inventions", Transactions of the Newcomen Society 22:169–86.
    IMcN

    Biographical history of technology > Bramah, Joseph

  • 63 Byron, Ada Augusta, Countess of Lovelace

    [br]
    b. 12 December 1815 Piccadilly Terrace, London, England
    d. 23 November 1852 East Horsley, Surrey, England
    [br]
    English mathematician, active in the early development of the calculating machine.
    [br]
    Educated by a number of governesses in a number of houses from Yorkshire to Ealing, she was the daughter of a hypochondriac mother and her absent, separated, husband, the poet George Gordon, Lord Byron. As a child a mysterious and undiagnosed illness deprived her "of the use of her limbs" and she was "obliged to use crutches". The complaint was probably psychosomatic as it cleared up when she was 17 and was about to attend her first court ball. On 8 July 1835 she was married to William King, 1st Earl of Lovelace. She later bore two sons and a daughter. She was an avid student of science and in particular mathematics, in the course of which Charles Babbage encouraged her. In 1840 Babbage was invited to Turin to present a paper on his analytical engine. In the audience was a young Italian military engineer, L.F.Menabrea, who was later to become a general in Garibaldi's army. The paper was written in French and published in 1842 in the Bibliothèque Universelle de Genève. This text was translated into English and published with extensive annotations by the Countess of Lovelace, appearing in Taylor's Scientific Memoirs. The Countess thoroughly understood and appreciated Babbage's machine and the clarity of her description was so great that it is undoubtedly the best contemporary account of the engine: even Babbage recognized the Countess's description as superior to his own. Ada often visited Babbage in his workshop and listened to his explanations of the structure and use of his engines. She shared with her husband a love of horse-racing and, with Babbage, tried to develop a system for backing horses. Babbage and the Earl apparently stopped their efforts in time, but the Countess lost so heavily that she had to pawn all her family jewels. Her losses at the 1851 Derby alone amounted to £3,200, while borrow-ing a further £1,800 from her husband. This situation involved her in being blackmailed. She became an opium addict due to persistent pain from gastritis, intermittent anorexia and paroxys-mal tachycardia. Charles Babbage was always a great comfort to her, not only for their shared mathematical interests but also as a friend helping in all manner of small services such as taking her dead parrot to the taxidermist. She died after a protracted illness, thought to be cancer, at East Horsley Towers.
    [br]
    Further Reading
    D.Langley Moore, 1977, Ada, Countess of Lovelace: Byron's Legitimate Daughter, John Murray.
    P.Morrison and E.Morrison, 1961, Charles Babbage and His Calculating Engine, Dover Publications.

    Biographical history of technology > Byron, Ada Augusta, Countess of Lovelace

  • 64 Caproni, Giovanni Battista (Gianni), Conte di Taliedo

    SUBJECT AREA: Aerospace
    [br]
    b. 3 June 1886 Massone, Italy
    d. 29 October 1957 Rome, Italy
    [br]
    Italian aircraft designer and manufacturer, well known for his early large-aircraft designs.
    [br]
    Gianni Caproni studied civil and electrical engineering in Munich and Liège before moving on to Paris, where he developed an interest in aeronautics. He built his first aircraft in 1910, a biplane with a tricycle undercarriage (which has been claimed as the world's first tricycle undercarriage). Caproni and his brother, Dr Fred Caproni, set up a factory at Malpensa in northern Italy and produced a series of monoplanes and biplanes. In 1913 Caproni astounded the aviation world with his Ca 30 three-engined biplane bomber. There followed many variations, of which the most significant were the Ca 32 of 1915, the first large bomber to enter service in significant numbers, and the Ca 42 triplane of 1917 with a wing span of almost 30 metres.
    After the First World War, Caproni designed an even larger aircraft with three pairs of triplane wings (i.e. nine wings each of 30 metres span) and eight engines. This Ca 60 flying boat was designed to carry 100 passengers. In 1921 it made one short flight lightly loaded; however, with a load of sandbags representing sixty passengers, it crashed soon after take-off. The project was abandoned but Caproni's company prospered and expanded to become one of the largest groups of companies in Italy. In the 1930s Caproni aircraft twice broke the world altitude record. Several Caproni types were in service when Italy entered the Second World War, and an unusual research aircraft was under development. The Caproni-Campini No. 1 (CC2) was a jet, but it did not have a gas-turbine engine. Dr Campini's engine used a piston engine to drive a compressor which forced air out through a nozzle, and by burning fuel in this airstream a jet was produced. It flew with limited success in August 1940, amid much publicity: the first German jet (1939) and the first British jet (1941) were both flown in secret. Caproni retained many of his early aircraft for his private museum, including some salvaged parts from his monstrous flying boat.
    [br]
    Principal Honours and Distinctions
    Created Conte di Taliedo 1940.
    Further Reading
    Dizionario biografico degli Italiani, 1976, Vol. XIX.
    The Caproni Museum has published two books on the Caproni aeroplanes: Gli Aeroplani Caproni -1909–1935 and Gli Aeroplani Caproni dal 1935 in poi. See also Jane's
    fighting Aircraft of World War 1; 1919, republished 1990.
    JDS

    Biographical history of technology > Caproni, Giovanni Battista (Gianni), Conte di Taliedo

  • 65 Cierva, Juan de la

    SUBJECT AREA: Aerospace
    [br]
    b. 21 September 1895 Murcia, Spain
    d. 9 December 1936 Croydon, England
    [br]
    Spanish engineer who played a major part in developing the autogiro in the 1920s and 1930s.
    [br]
    At the age of 17, Cierva and some of his friends built a successful two-seater biplane, the BCD-1 (C for Cierva). By 1919 he had designed a large three-engined biplane bomber, the C 3, which unfortunately crashed when its wing stalled (list its lift) during a slow-speed turn. Cierva turned all his energies to designing a flying machine which could not stall: his answer was the autogiro. Although an autogiro looks like a helicopter, its rotor blades are not driven by an engine, but free-wheel like a windmill. Forward speed is provided by a conventional engine and propeller, and even if this engine fails, the autogiro's rotors continue to free-wheel and it descends safely. Cierva patented his autogiro design in 1920, but it took him three years to put theory into practice. By 1925, after further improvements, he had produced a practical rotary-winged flying machine.
    He moved to England and in 1926 established the Cierva Autogiro Company Ltd. The Air Ministry showed great interest and a year later the British company Avro was commissioned to manufacture the C 6A Autogiro under licence. Probably the most significant of Cierva's autogiros was the C 30A, or Avro Rota, which served in the Royal Air Force from 1935 until 1945. Several other manufacturers in France, Germany, Japan and the USA built Cierva autogiros under licence, but only in small numbers and they never really rivalled fixed-wing aircraft. The death of Cierva in an airliner crash in 1936, together with the emergence of successful helicopters, all but extinguished interest in the autogiro.
    [br]
    Principal Honours and Distinctions
    Daniel Guggenheim Medal. Royal Aeronautical Society Silver Medal, Gold Medal (posthumously) 1937.
    Bibliography
    1931, Wings of To-morrow: The Story of the Autogiro, New York (an early account of his work).
    He read a paper on his latest achievements at the Royal Aeronautical Society on 15 March 1935.
    Further Reading
    P.W.Brooks, 1988, Cierva Autogiros: The Development of Rotary Wing Flight, Washington, DC (contains a full account of Cierva's work).
    Jose Warleta. 1977, Autogiro: Juan de la Cierva y su obra, Madrid (a detailed account of his work in Spain).
    Oliver Stewart, 1966, Aviation: The Creative Ideas, London (contains a chapter on Cierva).
    JDS

    Biographical history of technology > Cierva, Juan de la

  • 66 Curr, John

    [br]
    b. 1756 Kyo, near Lanchester, or in Greenside, near Ryton-on-Tyne, Durham, England
    d. 27 January 1823 Sheffield, England
    [br]
    English coal-mine manager and engineer, inventor of flanged, cast-iron plate rails.
    [br]
    The son of a "coal viewer", Curr was brought up in the West Durham colliery district. In 1777 he went to the Duke of Norfolk's collieries at Sheffield, where in 1880 he was appointed Superintendent. There coal was conveyed underground in baskets on sledges: Curr replaced the wicker sledges with wheeled corves, i.e. small four-wheeled wooden wagons, running on "rail-roads" with cast-iron rails and hauled from the coal-face to the shaft bottom by horses. The rails employed hitherto had usually consisted of plates of iron, the flange being on the wheels of the wagon. Curr's new design involved flanges on the rails which guided the vehicles, the wheels of which were unflanged and could run on any hard surface. He appears to have left no precise record of the date that he did this, and surviving records have been interpreted as implying various dates between 1776 and 1787. In 1787 John Buddle paid tribute to the efficiency of the rails of Curr's type, which were first used for surface transport by Joseph Butler in 1788 at his iron furnace at Wingerworth near Chesterfield: their use was then promoted widely by Benjamin Outram, and they were adopted in many other English mines. They proved serviceable until the advent of locomotives demanded different rails.
    In 1788 Curr also developed a system for drawing a full corve up a mine shaft while lowering an empty one, with guides to separate them. At the surface the corves were automatically emptied by tipplers. Four years later he was awarded a patent for using double ropes for lifting heavier loads. As the weight of the rope itself became a considerable problem with the increasing depth of the shafts, Curr invented the flat hemp rope, patented in 1798, which consisted of several small round ropes stitched together and lapped upon itself in winding. It acted as a counterbalance and led to a reduction in the time and cost of hoisting: at the beginning of a run the loaded rope began to coil upon a small diameter, gradually increasing, while the unloaded rope began to coil off a large diameter, gradually decreasing.
    Curr's book The Coal Viewer (1797) is the earliest-known engineering work on railway track and it also contains the most elaborate description of a Newcomen pumping engine, at the highest state of its development. He became an acknowledged expert on construction of Newcomen-type atmospheric engines, and in 1792 he established a foundry to make parts for railways and engines.
    Because of the poor financial results of the Duke of Norfolk's collieries at the end of the century, Curr was dismissed in 1801 despite numerous inventions and improvements which he had introduced. After his dismissal, six more of his patents were concerned with rope-making: the one he gained in 1813 referred to the application of flat ropes to horse-gins and perpendicular drum-shafts of steam engines. Curr also introduced the use of inclined planes, where a descending train of full corves pulled up an empty one, and he was one of the pioneers employing fixed steam engines for hauling. He may have resided in France for some time before his death.
    [br]
    Bibliography
    1788. British patent no. 1,660 (guides in mine shafts).
    1789. An Account of tin Improved Method of Drawing Coals and Extracting Ores, etc., from Mines, Newcastle upon Tyne.
    1797. The Coal Viewer and Engine Builder's Practical Companion; reprinted with five plates and an introduction by Charles E.Lee, 1970, London: Frank Cass, and New York: Augustus M.Kelley.
    1798. British patent no. 2,270 (flat hemp ropes).
    Further Reading
    F.Bland, 1930–1, "John Curr, originator of iron tram roads", Transactions of the Newcomen Society 11:121–30.
    R.A.Mott, 1969, Tramroads of the eighteenth century and their originator: John Curr', Transactions of the Newcomen Society 42:1–23 (includes corrections to Fred Bland's earlier paper).
    Charles E.Lee, 1970, introduction to John Curr, The Coal Viewer and Engine Builder's Practical Companion, London: Frank Cass, pp. 1–4; orig. pub. 1797, Sheffield (contains the most comprehensive biographical information).
    R.Galloway, 1898, Annals of Coalmining, Vol. I, London; reprinted 1971, London (provides a detailed account of Curr's technological alterations).
    WK / PJGR

    Biographical history of technology > Curr, John

  • 67 Heinkel, Ernst

    [br]
    b. 24 January 1888 Grünbach, Remstal, Germany
    d. 30 January 1958 Stuttgart, Germany
    [br]
    German aeroplane designer who was responsible for the first jet aeroplane to fly.
    [br]
    The son of a coppersmith, as a young man Ernst Heinkel was much affected by seeing the Zeppelin LZ 4 crash and burn out at Echterdringen, near Stuttgart. After studying engineering, in 1910 he designed his first aeroplane, but it crashed; he was more successful the following year when he made a flight in it, with an engine on hire from the Daimler company. After a period working for a firm near Munich and for LVG at Johannisthal, near Berlin, he moved to the Albatros Company of Berlin with a monthly salary of 425 marks. In May 1913 he moved to Lake Constance to work on the design of sea-planes and in May 1914 he moved again, this time to the Brandenburg Company, where he remained as a designer until 1922, when he founded his own company, Ernst Heinkel Flugzeugwerke. Following the First World War, German companies were not allowed to build military aircraft, which was frustrating for Heinkel whose main interest was high-speed aircraft. His sleek He 70 airliner, built for Lufthansa, was designed to carry four passengers at high speeds: indeed it broke many records in 1933. Lufthansa decided it needed a larger version capable of carrying ten passengers, so Heinkel produced his most famous aeroplane, the He 111. Although it was designed as a twin-engined airliner on the surface, secretly Heinkel was producing a bomber. The airliner version first flew on Lufthansa routes in 1936, and by 1939 almost 1,000 bombers were in service with the Luftwaffe. A larger four-engined bomber, the He 177, ran into development problems and it did not see service until late in the Second World War. Heinkel's quest for speed led to the He 176 rocket-powered research aeroplane which flew on 20 June 1939, but Hitler and Goering were not impressed. The He 178, with Dr Hans von Ohain's jet engine, made its historic first flight a few weeks later on 27 August 1939; this was almost two years before the maiden flight in Britain of the Gloster E 28/39, powered by Whittle's jet engine. This project was a private venture by Heinkel and was carried out in great secrecy, so the world's first jet aircraft went almost unnoticed. Heinkel's jet fighters, the He 280 and the He 162, were never fully operational. After the war, Heinkel in 1950 set up a new company which made bicycles, motor cycles and "bubble" cars.
    [br]
    Bibliography
    1956, He 1000, trans. M.Savill, London: Hutchinson (the English edition of his autobiography).
    Further Reading
    Jane's Fighting Aircraft of World War II, London: Jane's; reprinted 1989.
    P. St J.Turner, 1970, Heinkel: An Aircraft Album, London.
    H.J.Nowarra, 1975, Heinkel und seine Flugzeuge, Munich (a comprehensive record of his aircraft).
    JDS / IMcN

    Biographical history of technology > Heinkel, Ernst

  • 68 Papin, Denis

    [br]
    b. 22 August 1647 Blois, Loire et Cher, France
    d. 1712 London, England
    [br]
    French mathematician and physicist, inventor of the pressure-cooker.
    [br]
    Largely educated by his father, he worked for some time for Huygens at Ley den, then for a time in London where he assisted Robert Boyle with his experiments on the air pump. He supposedly invented the double-acting air pump. He travelled to Venice and worked there for a time, but was back in London in 1684 before taking up the position of Professor of Mathematics at the University of Marburg (in 1669 or 1670 he became a Doctor of Medicine at Angers), where he remained from 1687 to 1695. Then followed a period at Cassel, where he was employed by the Duke of Hesse. In this capacity he was much involved in the application of steam-power to pumping water for the Duke's garden fountains. Papin finally returned to London in 1707. He is best known for his "digester", none other than the domestic pressure-cooker. John Evelyn describes it in his diary (12 April 1682): "I went this Afternoone to a Supper, with severall of the R.Society, which was all dressed (both fish and flesh) in Monsieur Papins Digestorie; by which the hardest bones of Biefe itself, \& Mutton, were without water, or other liquor, \& with less than 8 ounces of Coales made as soft as Cheeze, produc'd an incredible quantity of Gravie…. This Philosophical Supper raised much mirth among us, \& exceedingly pleased all the Companie." The pressure-cooker depends on the increase in the boiling point of water with increase of pressure. To avoid the risk of the vessel exploding, Papin devised a weight-loaded lever-type safety valve.
    There are those who would claim that Papin preceded Newcomen as the true inventor of the steam engine. There is no doubt that as early as 1690 Papin had the idea of an atmospheric engine, in which a piston in a cylinder is forced upwards by expanding steam and then returned by the weight of the atmosphere upon the piston, but he lacked practical engineering skill such as was necessary to put theory into practice. The story is told of his last trip from Cassel, when returning to England. It is said that he built his own steamboat, intending to make the whole journey by this means, ending with a triumphal journey up the Thames. However, boatmen on the river Weser, thinking that the steamboat threatened their livelihood, attacked it and broke it up. Papin had to travel by more orthodox means. Papin is said to have co-operated with Thomas Savery in the development of the lat-ter's steam engine, on which he was working c. 1705.
    [br]
    Further Reading
    Charles-Armand Klein, 1987, Denis Papin: Illustre savant blaisois, Chambray, France: CLD.
    A.P.M.Fleming and H.R.S.Brocklehurst, 1925, A History of Engineering.
    Sigvar Strandh, 1979, Machines, Mitchell Beazley.
    IMcN

    Biographical history of technology > Papin, Denis

  • 69 Porta, Giovanni Battista (Giambattista) della

    [br]
    b. between 3 October and 15 November 1535 Vico Equense, near Naples, Italy
    d. 4 February 1615 Naples, Italy
    [br]
    Italian natural philosopher who published many scientific books, one of which covered ideas for the use of steam.
    [br]
    Giambattista della Porta spent most of his life in Naples, where some time before 1580 he established the Accademia dei Segreti, which met at his house. In 1611 he was enrolled among the Oziosi in Naples, then the most renowned literary academy. He was examined by the Inquisition, which, although he had become a lay brother of the Jesuits by 1585, banned all further publication of his books between 1592 and 1598.
    His first book, the Magiae Naturalis, which covered the secrets of nature, was published in 1558. He had been collecting material for it since the age of 15 and he saw that science should not merely represent theory and contemplation but must arrive at practical and experimental expression. In this work he described the hardening of files and pieces of armour on quite a large scale, and it included the best sixteenth-century description of heat treatment for hardening steel. In the 1589 edition of this work he covered ways of improving vision at a distance with concave and convex lenses; although he may have constructed a compound microscope, the history of this instrument effectively begins with Galileo. His theoretical and practical work on lenses paved the way for the telescope and he also explored the properties of parabolic mirrors.
    In 1563 he published a treatise on cryptography, De Furtivis Liter arum Notis, which he followed in 1566 with another on memory and mnemonic devices, Arte del Ricordare. In 1584 and 1585 he published treatises on horticulture and agriculture based on careful study and practice; in 1586 he published De Humana Physiognomonia, on human physiognomy, and in 1588 a treatise on the physiognomy of plants. In 1593 he published his De Refractione but, probably because of the ban by the Inquisition, no more were produced until the Spiritali in 1601 and his translation of Ptolemy's Almagest in 1605. In 1608 two new works appeared: a short treatise on military fortifications; and the De Distillatione. There was an important work on meteorology in 1610. In 1601 he described a device similar to Hero's mechanisms which opened temple doors, only Porta used steam pressure instead of air to force the water out of its box or container, up a pipe to where it emptied out into a higher container. Under the lower box there was a small steam boiler heated by a fire. He may also have been the first person to realize that condensed steam would form a vacuum, for there is a description of another piece of apparatus where water is drawn up into a container at the top of a long pipe. The container was first filled with steam so that, when cooled, a vacuum would be formed and water drawn up into it. These are the principles on which Thomas Savery's later steam-engine worked.
    [br]
    Further Reading
    Dictionary of Scientific Biography, 1975, Vol. XI, New York: C.Scribner's Sons (contains a full biography).
    H.W.Dickinson, 1938, A Short History of the Steam Engine, Cambridge University Press (contains an account of his contributions to the early development of the steam-engine).
    C.Singer (ed.), 1957, A History of Technology, Vol. III, Oxford University Press (contains accounts of some of his other discoveries).
    I.Asimov (ed.), 1982, Biographical Encyclopaedia of Science and Technology, 2nd edn., New York: Doubleday.
    G.Sarton, 1957, Six wings: Men of Science in the Renaissance, London: Bodley Head, pp. 85–8.
    RLH / IMcN

    Biographical history of technology > Porta, Giovanni Battista (Giambattista) della

  • 70 Smith, J.

    SUBJECT AREA: Textiles
    [br]
    fl. 1830s Scotland
    [br]
    Scottish inventor of the first endless chain of flats for carding.
    [br]
    Carding by hand required a pair of hand cards. The lump of tangled fibres was teased out by pulling one card across the other to even out the fibres and transfer them onto one of the cards from which they could be rolled up into a rollag or slubbing. When Arkwright began to use cylinder cards, the fibres were teased out as they passed from one cylinder to the next. In order to obtain a greater carding area, he soon introduced smaller cylinders and placed strips of flat card above the periphery of the main cylinder. These became clogged with short fibres and dirt, so they had to be lifted off and cleaned or "stripped" at intervals. The first to invent a self-stripping card was Archibald Buchanan, at the Catrine mills in Ayrshire, with his patent in 1823. In his arrangement each flat was turned upside down and stripped by a rotary brush. This was improved by Smith in 1834 and patented in the same year. Smith fixed the flats on an endless chain so that they travelled around the periphery of the top of the main cylinder. Just after the point where they left the cylinder, Smith placed a rotary brush and a comb to clear the brush. In this way each flat in turn was properly and regularly cleaned.
    Smith was an able mechanic and Managing Partner of the Deanston mills in Scotland. He visited Manchester, where he was warmly received on the introduction of his machine there at about the same time as he patented it in Scotland. The carding engine he designed was complex, for he arranged a double feed to obtain greater production. While this part of his patent was not developed, his chain or endless flats became the basis used in later cotton carding engines. He took out at least half a dozen other patents for textile machinery. These included two in 1834, the first for a self-acting mule and the second with J.C. Dyer for improvements to winding on to spools. There were further spinning patents in 1839 and 1844 and more for preparatory machinery including carding in 1841 and 1842. He was also interested in agriculture and invented a subsoil plough and other useful things.
    [br]
    Bibliography
    1834, British patent no. 6,560 (self-stripping card). 1834, British patent no. 656 (self-acting mule). 1839, British patent no. 8,054.
    1841, British patent no. 8,796 (carding machine). 1842, British patent no. 9,313 (carding machine).
    1844, British patent no. 10,080.
    Further Reading
    E.Leigh, 1875, The Science of Modern Cotton Spinning Manchester (provides a good account of Smith's carding engine).
    W.English, 1969, The Textile Industry, London (covers the development of the carding engine).
    RLH

    Biographical history of technology > Smith, J.

  • 71 Cockerell, Christopher Sydney

    [br]
    b. 4 June 1910 Cambridge, England
    [br]
    British designer and engineer who invented the hovercraft.
    [br]
    He was educated at Gresham's School in Holt and at Peterhouse College, Cambridge, where he graduated in engineering in 1931; he was made an Honorary Fellow in 1974. Cockerell entered the engineering firm of W.H.Allen \& Sons of Bedford as a pupil in 1931, and two years later he returned to Cambridge to engage in radio research for a further two years. In 1935 he joined Marconi Wireless Telegraph Company, working on very high frequency (VHF) transmitters and direction finders. During the Second World War he worked on airborne navigation and communication equipment, and later he worked on radar. During this period he filed thirty six patents in the fields of radio and navigational systems.
    In 1950 Cockerell left Marconi to set up his own boat-hire business on the Norfolk Broads. He began to consider how to increase the speed of boats by means of air lubrication. Since the 1870s engineers had at times sought to reduce the drag on a boat by means of a thin layer of air between hull and water. After his first experiments, Cockerell concluded that a significant reduction in drag could only be achieved with a thick cushion of air. After experimenting with several ways of applying the air-cushion principle, the first true hovercraft "took off" in 1955. It was a model in balsa wood, 2 ft 6 in. (762 mm) long and weighing 4½ oz. (27.6 g); it was powered by a model-aircraft petrol engine and could travel over land or water at 13 mph (20.8 km/h). Cockerell filed his first hovercraft patent on 12 December 1955. The following year he founded Hovercraft Ltd and began the search for a manufacturer. The government was impressed with the invention's military possibilities and placed it on the secret list. The secret leaked out, however, and the project was declassified. In 1958 the National Research and Development Corporation decided to give its backing, and the following year Saunders Roe Ltd with experience of making flying boats, produced the epoch-making SR N1, a hovercraft with an air cushion produced by air jets directed downwards and inwards arranged round the periphery of the craft. It made a successful crossing of the English Channel, with the inventor on board.
    Meanwhile Cockerell had modified the hovercraft so that the air cushion was enclosed within flexible skirts. In this form it was taken up by manufacturers throughout the world and found wide application as a passenger-carrying vehicle, for military transport and in scientific exploration and survey work. The hover principle found other uses, such as for air-beds to relieve severely burned patients and for hover mowers.
    The development of the hovercraft has occupied Cockerell since then and he has been actively involved in the several companies set up to exploit the invention, including Hovercraft Development Ltd and British Hovercraft Corporation. In the 1970s and 1980s he took up the idea of the generation of electricity by wavepower; he was Founder of Wavepower Ltd, of which he was Chairman from 1974 to 1982.
    [br]
    Principal Honours find Distinctions
    Knighted 1969. CBE 1955. FRS 1967.
    LRD

    Biographical history of technology > Cockerell, Christopher Sydney

  • 72 Artificial Intelligence

       In my opinion, none of [these programs] does even remote justice to the complexity of human mental processes. Unlike men, "artificially intelligent" programs tend to be single minded, undistractable, and unemotional. (Neisser, 1967, p. 9)
       Future progress in [artificial intelligence] will depend on the development of both practical and theoretical knowledge.... As regards theoretical knowledge, some have sought a unified theory of artificial intelligence. My view is that artificial intelligence is (or soon will be) an engineering discipline since its primary goal is to build things. (Nilsson, 1971, pp. vii-viii)
       Most workers in AI [artificial intelligence] research and in related fields confess to a pronounced feeling of disappointment in what has been achieved in the last 25 years. Workers entered the field around 1950, and even around 1960, with high hopes that are very far from being realized in 1972. In no part of the field have the discoveries made so far produced the major impact that was then promised.... In the meantime, claims and predictions regarding the potential results of AI research had been publicized which went even farther than the expectations of the majority of workers in the field, whose embarrassments have been added to by the lamentable failure of such inflated predictions....
       When able and respected scientists write in letters to the present author that AI, the major goal of computing science, represents "another step in the general process of evolution"; that possibilities in the 1980s include an all-purpose intelligence on a human-scale knowledge base; that awe-inspiring possibilities suggest themselves based on machine intelligence exceeding human intelligence by the year 2000 [one has the right to be skeptical]. (Lighthill, 1972, p. 17)
       4) Just as Astronomy Succeeded Astrology, the Discovery of Intellectual Processes in Machines Should Lead to a Science, Eventually
       Just as astronomy succeeded astrology, following Kepler's discovery of planetary regularities, the discoveries of these many principles in empirical explorations on intellectual processes in machines should lead to a science, eventually. (Minsky & Papert, 1973, p. 11)
       Many problems arise in experiments on machine intelligence because things obvious to any person are not represented in any program. One can pull with a string, but one cannot push with one.... Simple facts like these caused serious problems when Charniak attempted to extend Bobrow's "Student" program to more realistic applications, and they have not been faced up to until now. (Minsky & Papert, 1973, p. 77)
       What do we mean by [a symbolic] "description"? We do not mean to suggest that our descriptions must be made of strings of ordinary language words (although they might be). The simplest kind of description is a structure in which some features of a situation are represented by single ("primitive") symbols, and relations between those features are represented by other symbols-or by other features of the way the description is put together. (Minsky & Papert, 1973, p. 11)
       [AI is] the use of computer programs and programming techniques to cast light on the principles of intelligence in general and human thought in particular. (Boden, 1977, p. 5)
       The word you look for and hardly ever see in the early AI literature is the word knowledge. They didn't believe you have to know anything, you could always rework it all.... In fact 1967 is the turning point in my mind when there was enough feeling that the old ideas of general principles had to go.... I came up with an argument for what I called the primacy of expertise, and at the time I called the other guys the generalists. (Moses, quoted in McCorduck, 1979, pp. 228-229)
       9) Artificial Intelligence Is Psychology in a Particularly Pure and Abstract Form
       The basic idea of cognitive science is that intelligent beings are semantic engines-in other words, automatic formal systems with interpretations under which they consistently make sense. We can now see why this includes psychology and artificial intelligence on a more or less equal footing: people and intelligent computers (if and when there are any) turn out to be merely different manifestations of the same underlying phenomenon. Moreover, with universal hardware, any semantic engine can in principle be formally imitated by a computer if only the right program can be found. And that will guarantee semantic imitation as well, since (given the appropriate formal behavior) the semantics is "taking care of itself" anyway. Thus we also see why, from this perspective, artificial intelligence can be regarded as psychology in a particularly pure and abstract form. The same fundamental structures are under investigation, but in AI, all the relevant parameters are under direct experimental control (in the programming), without any messy physiology or ethics to get in the way. (Haugeland, 1981b, p. 31)
       There are many different kinds of reasoning one might imagine:
        Formal reasoning involves the syntactic manipulation of data structures to deduce new ones following prespecified rules of inference. Mathematical logic is the archetypical formal representation. Procedural reasoning uses simulation to answer questions and solve problems. When we use a program to answer What is the sum of 3 and 4? it uses, or "runs," a procedural model of arithmetic. Reasoning by analogy seems to be a very natural mode of thought for humans but, so far, difficult to accomplish in AI programs. The idea is that when you ask the question Can robins fly? the system might reason that "robins are like sparrows, and I know that sparrows can fly, so robins probably can fly."
        Generalization and abstraction are also natural reasoning process for humans that are difficult to pin down well enough to implement in a program. If one knows that Robins have wings, that Sparrows have wings, and that Blue jays have wings, eventually one will believe that All birds have wings. This capability may be at the core of most human learning, but it has not yet become a useful technique in AI.... Meta- level reasoning is demonstrated by the way one answers the question What is Paul Newman's telephone number? You might reason that "if I knew Paul Newman's number, I would know that I knew it, because it is a notable fact." This involves using "knowledge about what you know," in particular, about the extent of your knowledge and about the importance of certain facts. Recent research in psychology and AI indicates that meta-level reasoning may play a central role in human cognitive processing. (Barr & Feigenbaum, 1981, pp. 146-147)
       Suffice it to say that programs already exist that can do things-or, at the very least, appear to be beginning to do things-which ill-informed critics have asserted a priori to be impossible. Examples include: perceiving in a holistic as opposed to an atomistic way; using language creatively; translating sensibly from one language to another by way of a language-neutral semantic representation; planning acts in a broad and sketchy fashion, the details being decided only in execution; distinguishing between different species of emotional reaction according to the psychological context of the subject. (Boden, 1981, p. 33)
       Can the synthesis of Man and Machine ever be stable, or will the purely organic component become such a hindrance that it has to be discarded? If this eventually happens-and I have... good reasons for thinking that it must-we have nothing to regret and certainly nothing to fear. (Clarke, 1984, p. 243)
       The thesis of GOFAI... is not that the processes underlying intelligence can be described symbolically... but that they are symbolic. (Haugeland, 1985, p. 113)
        14) Artificial Intelligence Provides a Useful Approach to Psychological and Psychiatric Theory Formation
       It is all very well formulating psychological and psychiatric theories verbally but, when using natural language (even technical jargon), it is difficult to recognise when a theory is complete; oversights are all too easily made, gaps too readily left. This is a point which is generally recognised to be true and it is for precisely this reason that the behavioural sciences attempt to follow the natural sciences in using "classical" mathematics as a more rigorous descriptive language. However, it is an unfortunate fact that, with a few notable exceptions, there has been a marked lack of success in this application. It is my belief that a different approach-a different mathematics-is needed, and that AI provides just this approach. (Hand, quoted in Hand, 1985, pp. 6-7)
       We might distinguish among four kinds of AI.
       Research of this kind involves building and programming computers to perform tasks which, to paraphrase Marvin Minsky, would require intelligence if they were done by us. Researchers in nonpsychological AI make no claims whatsoever about the psychological realism of their programs or the devices they build, that is, about whether or not computers perform tasks as humans do.
       Research here is guided by the view that the computer is a useful tool in the study of mind. In particular, we can write computer programs or build devices that simulate alleged psychological processes in humans and then test our predictions about how the alleged processes work. We can weave these programs and devices together with other programs and devices that simulate different alleged mental processes and thereby test the degree to which the AI system as a whole simulates human mentality. According to weak psychological AI, working with computer models is a way of refining and testing hypotheses about processes that are allegedly realized in human minds.
    ... According to this view, our minds are computers and therefore can be duplicated by other computers. Sherry Turkle writes that the "real ambition is of mythic proportions, making a general purpose intelligence, a mind." (Turkle, 1984, p. 240) The authors of a major text announce that "the ultimate goal of AI research is to build a person or, more humbly, an animal." (Charniak & McDermott, 1985, p. 7)
       Research in this field, like strong psychological AI, takes seriously the functionalist view that mentality can be realized in many different types of physical devices. Suprapsychological AI, however, accuses strong psychological AI of being chauvinisticof being only interested in human intelligence! Suprapsychological AI claims to be interested in all the conceivable ways intelligence can be realized. (Flanagan, 1991, pp. 241-242)
        16) Determination of Relevance of Rules in Particular Contexts
       Even if the [rules] were stored in a context-free form the computer still couldn't use them. To do that the computer requires rules enabling it to draw on just those [ rules] which are relevant in each particular context. Determination of relevance will have to be based on further facts and rules, but the question will again arise as to which facts and rules are relevant for making each particular determination. One could always invoke further facts and rules to answer this question, but of course these must be only the relevant ones. And so it goes. It seems that AI workers will never be able to get started here unless they can settle the problem of relevance beforehand by cataloguing types of context and listing just those facts which are relevant in each. (Dreyfus & Dreyfus, 1986, p. 80)
       Perhaps the single most important idea to artificial intelligence is that there is no fundamental difference between form and content, that meaning can be captured in a set of symbols such as a semantic net. (G. Johnson, 1986, p. 250)
        18) The Assumption That the Mind Is a Formal System
       Artificial intelligence is based on the assumption that the mind can be described as some kind of formal system manipulating symbols that stand for things in the world. Thus it doesn't matter what the brain is made of, or what it uses for tokens in the great game of thinking. Using an equivalent set of tokens and rules, we can do thinking with a digital computer, just as we can play chess using cups, salt and pepper shakers, knives, forks, and spoons. Using the right software, one system (the mind) can be mapped into the other (the computer). (G. Johnson, 1986, p. 250)
        19) A Statement of the Primary and Secondary Purposes of Artificial Intelligence
       The primary goal of Artificial Intelligence is to make machines smarter.
       The secondary goals of Artificial Intelligence are to understand what intelligence is (the Nobel laureate purpose) and to make machines more useful (the entrepreneurial purpose). (Winston, 1987, p. 1)
       The theoretical ideas of older branches of engineering are captured in the language of mathematics. We contend that mathematical logic provides the basis for theory in AI. Although many computer scientists already count logic as fundamental to computer science in general, we put forward an even stronger form of the logic-is-important argument....
       AI deals mainly with the problem of representing and using declarative (as opposed to procedural) knowledge. Declarative knowledge is the kind that is expressed as sentences, and AI needs a language in which to state these sentences. Because the languages in which this knowledge usually is originally captured (natural languages such as English) are not suitable for computer representations, some other language with the appropriate properties must be used. It turns out, we think, that the appropriate properties include at least those that have been uppermost in the minds of logicians in their development of logical languages such as the predicate calculus. Thus, we think that any language for expressing knowledge in AI systems must be at least as expressive as the first-order predicate calculus. (Genesereth & Nilsson, 1987, p. viii)
        21) Perceptual Structures Can Be Represented as Lists of Elementary Propositions
       In artificial intelligence studies, perceptual structures are represented as assemblages of description lists, the elementary components of which are propositions asserting that certain relations hold among elements. (Chase & Simon, 1988, p. 490)
       Artificial intelligence (AI) is sometimes defined as the study of how to build and/or program computers to enable them to do the sorts of things that minds can do. Some of these things are commonly regarded as requiring intelligence: offering a medical diagnosis and/or prescription, giving legal or scientific advice, proving theorems in logic or mathematics. Others are not, because they can be done by all normal adults irrespective of educational background (and sometimes by non-human animals too), and typically involve no conscious control: seeing things in sunlight and shadows, finding a path through cluttered terrain, fitting pegs into holes, speaking one's own native tongue, and using one's common sense. Because it covers AI research dealing with both these classes of mental capacity, this definition is preferable to one describing AI as making computers do "things that would require intelligence if done by people." However, it presupposes that computers could do what minds can do, that they might really diagnose, advise, infer, and understand. One could avoid this problematic assumption (and also side-step questions about whether computers do things in the same way as we do) by defining AI instead as "the development of computers whose observable performance has features which in humans we would attribute to mental processes." This bland characterization would be acceptable to some AI workers, especially amongst those focusing on the production of technological tools for commercial purposes. But many others would favour a more controversial definition, seeing AI as the science of intelligence in general-or, more accurately, as the intellectual core of cognitive science. As such, its goal is to provide a systematic theory that can explain (and perhaps enable us to replicate) both the general categories of intentionality and the diverse psychological capacities grounded in them. (Boden, 1990b, pp. 1-2)
       Because the ability to store data somewhat corresponds to what we call memory in human beings, and because the ability to follow logical procedures somewhat corresponds to what we call reasoning in human beings, many members of the cult have concluded that what computers do somewhat corresponds to what we call thinking. It is no great difficulty to persuade the general public of that conclusion since computers process data very fast in small spaces well below the level of visibility; they do not look like other machines when they are at work. They seem to be running along as smoothly and silently as the brain does when it remembers and reasons and thinks. On the other hand, those who design and build computers know exactly how the machines are working down in the hidden depths of their semiconductors. Computers can be taken apart, scrutinized, and put back together. Their activities can be tracked, analyzed, measured, and thus clearly understood-which is far from possible with the brain. This gives rise to the tempting assumption on the part of the builders and designers that computers can tell us something about brains, indeed, that the computer can serve as a model of the mind, which then comes to be seen as some manner of information processing machine, and possibly not as good at the job as the machine. (Roszak, 1994, pp. xiv-xv)
       The inner workings of the human mind are far more intricate than the most complicated systems of modern technology. Researchers in the field of artificial intelligence have been attempting to develop programs that will enable computers to display intelligent behavior. Although this field has been an active one for more than thirty-five years and has had many notable successes, AI researchers still do not know how to create a program that matches human intelligence. No existing program can recall facts, solve problems, reason, learn, and process language with human facility. This lack of success has occurred not because computers are inferior to human brains but rather because we do not yet know in sufficient detail how intelligence is organized in the brain. (Anderson, 1995, p. 2)

    Historical dictionary of quotations in cognitive science > Artificial Intelligence

  • 73 занимать важное место в

    •

    Today, farm animals fill (or occupy) a highly important place in the life of man.

    •

    It seems clear that this engine will loom large in the future of the engine industry.

    •

    Stackers have a significant place in the development of this equipment.

    Русско-английский научно-технический словарь переводчика > занимать важное место в

  • 74 ricerca

    f (pl -che) research
    di persona scomparsa, informazione et cetera search (di for)
    education project
    alla ricerca di in search of
    * * *
    ricerca s.f.
    1 search; quest: la ricerca della merce rubata fu inutile, the search for the stolen goods was fruitless // alla ricerca di, in search of: corsi alla ricerca di un dottore, I ran to find a doctor; è sempre alla ricerca dell'interesse personale, he always has an eye to his own interest; siamo alla ricerca di qlco., we are in search of sthg. (o fam. we are on the lookout for sthg.); sono alla ricerca di un libro che gli possa interessare, I'm on the lookout for a book that might interest him; partire alla ricerca di un tesoro, to set off in quest (o in search) of treasure; andare alla ricerca di un impiego, to seek employment
    2 ( il perseguire) pursuit: la ricerca della felicità, the pursuit of happiness; la ricerca del sapere, the pursuit of knowledge; la ricerca della verità, the search after truth // alla ricerca di, in pursuit of: è venuto in Italia alla ricerca delle sue origini, he came to Italy in pursuit of his origins
    3 ( a carattere scientifico) research: ricerche nucleari, nuclear research (es); ricerche scientifiche, storiche, scientific, historical research (es); laboratorio di ricerche, research laboratory; lavoro di ricerca, research work; dedicò tutta la sua vita alla ricerca scientifica, he devoted all his life to scientific research; fece lunghe ricerche sulle cause di questo male, he carried out lengthy research into the causes of this disease; le sue ricerche non sono state fruttuose, his researches have not been successful; proseguire le ricerche sul cancro, to continue research on cancer; ( a scuola) la classe sta facendo una ricerca sul razzismo, the class are doing a project on racism // (econ.): ricerca e sviluppo, research and development; ricerca di mercato, market research; ricerca di base, basic research; ricerca pubblicitaria, promozionale, advertising, promotional research; ricerca a tavolino, desk research; ricerca di marketing, marketing research; ricerca motivazionale, motivational research
    4 ( indagine) investigation, inquiry: con ulteriori ricerche scoprì che..., on further investigation he discovered that...; fare delle ricerche su qlco., to make inquiries about sthg.; interrompere le ricerche sul caso di omicidio, to interrupt the investigations into the murder case
    5 ( richiesta) demand: c'è molta ricerca di questo articolo, there is great demand for this article
    6 (inform.) research; retrieval: ricerca operativa, operating logic; ricerca di guasto, trouble hunting; ricerca e correzione del guasto, trouble shooting; ricerca e correzione degli errori, (IBM) debugging; ricerca di informazioni, computer-assisted retrieval (abbr. CAR).
    * * *
    pl. - che [ri'tʃerka, ke] sostantivo femminile
    1) (studio) research (su into, on); (risultato dello studio) study, survey, piece of research

    ricerca sul campo — field study, fieldwork

    fare una ricerca su qcs. — to make a study on sth.

    centro, laboratorio, gruppo di ricerca — research centre, laboratory, unit

    2) (perlustrazione) search, researches pl.
    3) (il cercare) research, quest, pursuit

    la ricerca della felicità, della verità — the pursuit of happiness, the quest for truth

    essere alla ricerca di — to be looking for [casa, lavoro]

    4) (indagine) investigation, inquiry
    5) scol. (research) project, topic
    6) inform. search, look-up
    •
    * * *
    ricerca
    pl. - che /ri't∫erka, ke/
    sostantivo f.
     1 (studio) research (su into, on); (risultato dello studio) study, survey, piece of research; ricerca sul campo field study, fieldwork; fare una ricerca su qcs. to make a study on sth.; sta facendo (delle) -che sul cancro she's doing some research on cancer; centro, laboratorio, gruppo di ricerca research centre, laboratory, unit
     2 (perlustrazione) search, researches pl.; dopo due ore di ricerca after a two-hour search; partecipare alle -che to take part in the search
     3 (il cercare) research, quest, pursuit; la ricerca della felicità, della verità the pursuit of happiness, the quest for truth; essere alla ricerca di to be looking for [casa, lavoro]; alla ricerca di una soluzione in (the) search of a solution
     4 (indagine) investigation, inquiry; faremo -che più approfondite we will inquire further into the matter
     5 scol. (research) project, topic
     6 inform. search, look-up; motore di ricerca search engine
    ricerca di mercato market research; ricerca scientifica scientific research; ricerca spaziale space research.

    Dizionario Italiano-Inglese > ricerca

  • 75 оборот

    ( рубки) rotation period лесн., revolution, recto, ( тары) trip, turn, ( подвижного состава) turnaround, turnover
    * * *
    оборо́т м.
    оборо́тов в мину́ту — revolutions per minute, RPM
    за оди́н оборо́т — per revolution
    соверша́ть столько-то оборо́тов — complete [make] so-many revolutions
    2. ( спутника) orbit
    3. эк. turn-over
    4. (совокупность работ, операций, а также время, необходимое для их выполнения) turn-over
    5. (возврат в процесс, особ. в химическом производстве) recycle
    поступа́ть в оборо́т — be recycled, be returned to the process
    6. мн. ( скорость) speed
    набира́ть оборо́ты жарг. — pick up speed
    сбавля́ть оборо́ты — drop speed, slow down
    сбро́сить оборо́ты — drop speed, slow down
    увели́чивать оборо́ты — accelerate the engine
    уменьша́ть оборо́ты — decelerate the engine
    оборо́т ваго́на — wagon turn-over
    оборо́т ва́рки цел.-бум. — cooking cycle
    оборо́т изло́жниц — mould turn-over
    оборо́т капита́ла — turn-over of capital
    оборо́т котла́ — cooking cycle
    оборо́т локомоти́ва — locomotive turn-over
    оборо́т месторожде́ния — development, preparation
    оборо́т подвижно́го соста́ва — rolling stock turn-over
    оборо́т та́ры — trip of a container

    Русско-английский политехнический словарь > оборот

  • 76 занимать важное место в

    •

    Today, farm animals fill (or occupy) a highly important place in the life of man.

    •

    It seems clear that this engine will loom large in the future of the engine industry.

    •

    Stackers have a significant place in the development of this equipment.

    Русско-английский научно-технический словарь переводчика > занимать важное место в

  • 77 испытывать

    •

    Magnetic fluids exhibit (or undergo) new instabilities...

    •

    The Earth must have endured (or experienced) many more collisions than...

    •

    Suppose a hadron is subjected to a gauge transformation.

    II
    •

    To put these theories to a test,...

    * * *
    Испытывать -- to test; to evaluate (на стенде); to run (о машине в целом); to experience, to sustain, to suffer, to be pressured (претерпевать)
     Various components used in the cooling water and engine water wash systems were also evaluated.
     Nonetheless, the system still experienced false alarms and engine shutdowns.
     The process zone of size D is assumed to sustain the same stress sY as the plastic region.
     Gears with backlash can suffer high dynamic tooth loads if they are operated at high speeds with small nominal loads.
    Испытывать в-- In the first instance software can be implemented and run on the development system.

    Русско-английский научно-технический словарь переводчика > испытывать

  • 78 Gang

    1. gang [ʼgaŋ] adj
    \Gang und gäbe sein to be customary, to be the norm
    2. Gang <-[e]s, Gänge> [ʼgaŋ, pl ʼgɛŋə] m
    1) kein pl (\Gangart) walk, gait, way of walking;
    ich erkenne ihn schon am \Gang I recognize him from the way he walks;
    sie beschleunigte ihren \Gang she quickened [or speeded up] her pace;
    er verlangsamte seinen \Gang he slowed down;
    aufrechter \Gang upright carriage;
    einen federnden \Gang haben to have a spring in one's step;
    einen hinkenden \Gang haben to walk with a limp;
    einen schnellen \Gang haben to walk quickly;
    einen unsicheren \Gang haben to be unsteady on one's feet
    2) ( Weg) walk;
    sein erster \Gang war der zum Frühstückstisch the first thing he did was to go to the breakfast table;
    ich traf sie auf dem \Gang zum Arzt I bumped into [or met] her on the way to the doctor's; ( Besorgung) errand;
    einen \Gang machen [o tun] to go on an errand;
    ich muss heute in der Stadt einige Gänge erledigen I must do [or go on] a few errands in town today;
    machst du für mich einen \Gang zur Bank? could you go to the bank for me?;
    einen schweren \Gang tun to do sth difficult
    3) kein pl tech ( Bewegung) action, operation;
    den Motor in \Gang halten to keep the engine running;
    ihre Uhr hat einen gleichmäßigen \Gang her clock operates smoothly;
    etw in \Gang bringen [o setzen] to start [up sep, ] sth to get sth going, to get sth off the ground [or running] (a. fig)
    den Motor wieder in \Gang bringen to get the engine going again;
    in \Gang kommen to get off the ground;
    die Vorbereitungen sind endlich in \Gang gekommen the preparations are finally underway;
    mit diesem Schalter wird die Anlage in \Gang gesetzt this switch starts up the plant
    4) ( Ablauf) course;
    der \Gang der Ereignisse the course of events;
    er verfolgte den \Gang der Geschäfte he followed the company's developments;
    seinen gewohnten [o alten] \Gang gehen to run its usual course;
    alles geht wieder seinen gewohnten \Gang everything is proceeding as normal;
    im \Gang[e] [o in \Gang] sein to be underway; Handlung [einer Erzählung/eines Filmes etc.] development [of a narration's/film's etc. plot]
    5) (\Gang in einer Speisenfolge) course
    6) auto gear; ( Fahrrad) a. speed;
    einen \Gang einlegen to engage a gear;
    vorsichtig den ersten \Gang einlegen! carefully engage first gear!;
    hast du den zweiten \Gang drin? ( fam) are you in second gear?;
    den \Gang herausnehmen to engage neutral, to put the car into neutral;
    in den 2. \Gang schalten to change into 2nd gear;
    einen \Gang zulegen ( fig) to get a move on ( fig)
    7) ( eingefriedeter Weg) passageway;
    rings um das Atrium führte ein überdachter \Gang there was a covered walkway all around the atrium; ( Korridor) corridor;
    bitte warten Sie draußen auf dem \Gang please wait outside in the corridor; Theater, Flugzeug, Kirche, Laden, Stadion aisle; (Säulen\Gang) colonnade, passage; (Bergwerk\Gang) tunnel, gallery
    8) (Erz\Gang) vein
    9) anat duct; (Gehör\Gang) meatus
    WENDUNGEN:
    den \Gang nach Canossa antreten to eat humble pie ( fam)
    in die Gänge kommen ( fam) to get going;
    er braucht 6 Tassen Kaffee, um morgens in die Gänge zu kommen he needs 6 cups of coffee to get going in the morning;
    in [vollem] \Gang sein to be in full swing;
    im \Gang[e] sein gegen jdn to act against sb's interests;
    es ist etwas im \Gange something's up ( fam)
    3. Gang <-, -s> [gɛŋ] f
    gang

    Deutsch-Englisch Wörterbuch für Studenten > Gang

  • 79 gang

    1. gang [ʼgaŋ] adj
    \gang und gäbe sein to be customary, to be the norm
    2. Gang <-[e]s, Gänge> [ʼgaŋ, pl ʼgɛŋə] m
    1) kein pl (\gangart) walk, gait, way of walking;
    ich erkenne ihn schon am \gang I recognize him from the way he walks;
    sie beschleunigte ihren \gang she quickened [or speeded up] her pace;
    er verlangsamte seinen \gang he slowed down;
    aufrechter \gang upright carriage;
    einen federnden \gang haben to have a spring in one's step;
    einen hinkenden \gang haben to walk with a limp;
    einen schnellen \gang haben to walk quickly;
    einen unsicheren \gang haben to be unsteady on one's feet
    2) ( Weg) walk;
    sein erster \gang war der zum Frühstückstisch the first thing he did was to go to the breakfast table;
    ich traf sie auf dem \gang zum Arzt I bumped into [or met] her on the way to the doctor's; ( Besorgung) errand;
    einen \gang machen [o tun] to go on an errand;
    ich muss heute in der Stadt einige Gänge erledigen I must do [or go on] a few errands in town today;
    machst du für mich einen \gang zur Bank? could you go to the bank for me?;
    einen schweren \gang tun to do sth difficult
    3) kein pl tech ( Bewegung) action, operation;
    den Motor in \gang halten to keep the engine running;
    ihre Uhr hat einen gleichmäßigen \gang her clock operates smoothly;
    etw in \gang bringen [o setzen] to start [up sep, ] sth to get sth going, to get sth off the ground [or running] (a. fig)
    den Motor wieder in \gang bringen to get the engine going again;
    in \gang kommen to get off the ground;
    die Vorbereitungen sind endlich in \gang gekommen the preparations are finally underway;
    mit diesem Schalter wird die Anlage in \gang gesetzt this switch starts up the plant
    4) ( Ablauf) course;
    der \gang der Ereignisse the course of events;
    er verfolgte den \gang der Geschäfte he followed the company's developments;
    seinen gewohnten [o alten] \gang gehen to run its usual course;
    alles geht wieder seinen gewohnten \gang everything is proceeding as normal;
    im \gang[e] [o in \gang] sein to be underway; Handlung [einer Erzählung/eines Filmes etc.] development [of a narration's/film's etc. plot]
    5) (\gang in einer Speisenfolge) course
    6) auto gear; ( Fahrrad) a. speed;
    einen \gang einlegen to engage a gear;
    vorsichtig den ersten \gang einlegen! carefully engage first gear!;
    hast du den zweiten \gang drin? ( fam) are you in second gear?;
    den \gang herausnehmen to engage neutral, to put the car into neutral;
    in den 2. \gang schalten to change into 2nd gear;
    einen \gang zulegen ( fig) to get a move on ( fig)
    7) ( eingefriedeter Weg) passageway;
    rings um das Atrium führte ein überdachter \gang there was a covered walkway all around the atrium; ( Korridor) corridor;
    bitte warten Sie draußen auf dem \gang please wait outside in the corridor; Theater, Flugzeug, Kirche, Laden, Stadion aisle; (Säulen\gang) colonnade, passage; (Bergwerk\gang) tunnel, gallery
    8) (Erz\gang) vein
    9) anat duct; (Gehör\gang) meatus
    WENDUNGEN:
    den \gang nach Canossa antreten to eat humble pie ( fam)
    in die Gänge kommen ( fam) to get going;
    er braucht 6 Tassen Kaffee, um morgens in die Gänge zu kommen he needs 6 cups of coffee to get going in the morning;
    in [vollem] \gang sein to be in full swing;
    im \gang[e] sein gegen jdn to act against sb's interests;
    es ist etwas im \gange something's up ( fam)
    3. Gang <-, -s> [gɛŋ] f
    gang

    Deutsch-Englisch Wörterbuch für Studenten > gang

  • 80 оборот

    1. м. revolution

    счётчик числа оборотов, тахометр — revolution counter

    2. м. orbit
    3. м. turn-over
    4. м. recycle
    5. м. мн. speed
    Синонимический ряд:
    1. виток (сущ.) виток
    2. выражение (сущ.) выражение; речение

    Русско-английский большой базовый словарь > оборот

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