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1 lightweight concept
принцип, применяемый при создании лёгких самолётовEnglsh-Russian aviation and space dictionary > lightweight concept
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2 concept
концепция; понятие; идея; принципarea air defense concept — принцип районной [территориальной] организации ПВО
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3 Fuller, Richard Buckminster
SUBJECT AREA: Architecture and building[br]b. 12 July 1895 Milton, Massachusetts, USAd. 1 July 1983 Los Angeles, California, USA[br]American engineer, designer and inventor noted particularly for his creation of the geodesic dome.[br]After naval service during the First World War, Fuller worked for some time in the building industry with his father, who was an architect. In 1927 he became interested in trying to solve social problems by providing good, low-cost housing for an expanding population. Utilizing modern techniques applicable in other industries, such as the design of aircraft and ships, he produced his "Dymaxion House", which was transportable and cheap. This was followed in 1946 by his aluminium, stressed-skin, prefabricated house. The geodesic dome is the structural concept for which Fuller is particularly known. It was patented in 1954 and 300,000 were built over a thirty-year period. He had envisaged the dome being utilized on smaller or larger, simple or complex patterns for a wide variety of needs such as enclosing a covered area for a house, a botanical garden, an exhibition pavilion, a factory, a weather station or, indeed, an entire city. A famous example that he designed was that for the US pavilion at Expo '67 in Montreal. A geodesic dome is generally spherical in form, the chief structural elements of which are interconnected in a geodesic pattern, i.e. one in which the lines connecting two points are the shortest possible. The structure is composed of slender, lightweight struts (usually of aluminium) arranged in geometrical patterns, with the metal skeleton covered by a light, plastic material. Inside the dome, all the space is usable and the climate is controllable. Fuller wrote and lectured widely on his patented invention, explaining the importance of structural research particularly in relation to world needs.[br]Bibliography1975, Synergetics: Exploration on the Geometry of Thinking, Macmillan.1973, with R.W.Marks, The Dymaxion World of Buckminster Fuller, New York: Reprint Anchor.Further ReadingM.Pawley, 1990, Buckminster Fuller, Trefoil Books.DYBiographical history of technology > Fuller, Richard Buckminster
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4 Maxim, Sir Hiram Stevens
[br]b. 5 February 1840 Brockway's Mills, Maine, USAd. 24 November 1916 Streatham, London, England[br]American (naturalized British) inventor; designer of the first fully automatic machine gun and of an experimental steam-powered aircraft.[br]Maxim was born the son of a pioneer farmer who later became a wood turner. Young Maxim was first apprenticed to a carriage maker and then embarked on a succession of jobs before joining his uncle in his engineering firm in Massachusetts in 1864. As a young man he gained a reputation as a boxer, but it was his uncle who first identified and encouraged Hiram's latent talent for invention.It was not, however, until 1878, when Maxim joined the first electric-light company to be established in the USA, as its Chief Engineer, that he began to make a name for himself. He developed an improved light filament and his electric pressure regulator not only won a prize at the first International Electrical Exhibition, held in Paris in 1881, but also resulted in his being made a Chevalier de la Légion d'honneur. While in Europe he was advised that weapons development was a more lucrative field than electricity; consequently, he moved to England and established a small laboratory at Hatton Garden, London. He began by investigating improvements to the Gatling gun in order to produce a weapon with a faster rate of fire and which was more accurate. In 1883, by adapting a Winchester carbine, he successfully produced a semi-automatic weapon, which used the recoil to cock the gun automatically after firing. The following year he took this concept a stage further and produced a fully automatic belt-fed weapon. The recoil drove barrel and breechblock to the vent. The barrel then halted, while the breechblock, now unlocked from the former, continued rearwards, extracting the spent case and recocking the firing mechanism. The return spring, which it had been compressing, then drove the breechblock forward again, chambering the next round, which had been fed from the belt, as it did so. Keeping the trigger pressed enabled the gun to continue firing until the belt was expended. The Maxim gun, as it became known, was adopted by almost every army within the decade, and was to remain in service for nearly fifty years. Maxim himself joined forces with the large British armaments firm of Vickers, and the Vickers machine gun, which served the British Army during two world wars, was merely a refined version of the Maxim gun.Maxim's interests continued to occupy several fields of technology, including flight. In 1891 he took out a patent for a steam-powered aeroplane fitted with a pendulous gyroscopic stabilizer which would maintain the pitch of the aeroplane at any desired inclination (basically, a simple autopilot). Maxim decided to test the relationship between power, thrust and lift before moving on to stability and control. He designed a lightweight steam-engine which developed 180 hp (135 kW) and drove a propeller measuring 17 ft 10 in. (5.44 m) in diameter. He fitted two of these engines into his huge flying machine testrig, which needed a wing span of 104 ft (31.7 m) to generate enough lift to overcome a total weight of 4 tons. The machine was not designed for free flight, but ran on one set of rails with a second set to prevent it rising more than about 2 ft (61 cm). At Baldwyn's Park in Kent on 31 July 1894 the huge machine, carrying Maxim and his crew, reached a speed of 42 mph (67.6 km/h) and lifted off its rails. Unfortunately, one of the restraining axles broke and the machine was extensively damaged. Although it was subsequently repaired and further trials carried out, these experiments were very expensive. Maxim eventually abandoned the flying machine and did not develop his idea for a stabilizer, turning instead to other projects. At the age of almost 70 he returned to the problems of flight and designed a biplane with a petrol engine: it was built in 1910 but never left the ground.In all, Maxim registered 122 US and 149 British patents on objects ranging from mousetraps to automatic spindles. Included among them was a 1901 patent for a foot-operated suction cleaner. In 1900 he became a British subject and he was knighted the following year. He remained a larger-than-life figure, both physically and in character, until the end of his life.[br]Principal Honours and DistinctionsChevalier de la Légion d'Honneur 1881. Knighted 1901.Bibliography1908, Natural and Artificial Flight, London. 1915, My Life, London: Methuen (autobiography).Further ReadingObituary, 1916, Engineer (1 December).Obituary, 1916, Engineering (1 December).P.F.Mottelay, 1920, The Life and Work of Sir Hiram Maxim, London and New York: John Lane.Dictionary of National Biography, 1912–1921, 1927, Oxford: Oxford University Press.See also: Pilcher, Percy SinclairCM / JDSBiographical history of technology > Maxim, Sir Hiram Stevens
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