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21 burning
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22 time
время; период; продолжительность; pl. отсчёты времени; рассчитывать или замерять по времени; измерять времяfixed throttle point burn time — ркт. время работы двигателя с постоянной тягой
hover propellant burning time — время работы двигателей, обеспечивающих зависание (ЛА)
landing gear retraction time — время [продолжительность] уборки шасси
minimum annual flying time — установленный минимальный годовой налёт лётчика [члена экипажа]
running time between inspections — дв. наработка между осмотрами
time of thrust application — время действия тяги, время работы ракетного двигателя
time of velocity correction — время корректирования [регулирования] скорости
time to Mach 2 — время разгона до числа М=2
time to the ground — время до столкновения с землёй [до падения на землю]
total fleet engine time — общая [суммарная] наработка двигателей всего самолётного парка
— arm time— jet time— run time— T time— up time— web time— X time -
23 Nyquist, Harry
[br]b. 7 February 1889 Nilsby, Swedend. 4 April 1976 Texas, USA[br]Swedish-American engineer who established the formula for thermal noise in electrical circuits and the stability criterion for feedback amplifiers.[br]Nyquist (original family name Nykvist) emigrated from Sweden to the USA when he was 18 years old and settled in Minnesota. After teaching for a time, he studied electrical engineering at the University of North Dakota, gaining his first and Master's degrees in 1915 and 1916, and his PhD from Yale in 1917. He then joined the American Telegraph \& Telephone Company, moving to its Bell Laboratories in 1934 and remaining there until his retirement in 1954. A prolific inventor, he made many contributions to communication engineering, including the invention of vestigial-side band transmission. In the late 1920s he analysed the behaviour of analogue and digital signals in communication circuits, and in 1928 he showed that the thermal noise per unit bandwidth is given by 4 kT, where k is Boltzmann's constant and T the absolute temperature. However, he is best known for the Nyquist Criterion, which defines the conditions necessary for the stable, oscillation-free operation of amplifiers with a closed feedback loop. The problem of how to realize these conditions was investigated by his colleague Hendrik Bode.[br]Principal Honours and DistinctionsFranklin Institute Medal 1960. Institute of Electrical and Electronics Engineers Medal of Honour 1960; Mervin J.Kelly Award 1961.Bibliography1924, "Certain factors affecting telegraph speed", Bell System Technical Journal 3:324. 1928, "Certain topics in telegraph transmission theory", Transactions of the AmericanInstitute of Electrical Engineers 47:617.1928, "Thermal agitation of electric charge in conductors", Physical Review 32:110. 1932, "Regeneration theory", Bell System Technical Journal 11:126.1940, with K.Pfleger, "Effect of the quadrature component in single-sideband transmission", Bell System Technical Journal 19:63.Further ReadingBell Telephone Laboratories, 1975, Mission Communications.See also: Shannon, Claude ElwoodKF -
24 Wilkes, Maurice Vincent
SUBJECT AREA: Electronics and information technology[br]b. 26 June 1913 Stourbridge, Worcestershire, England[br]English physicist who was jointly responsible for the construction of the EDS AC computer.[br]Educated at King Edward VI Grammar School, Stourbridge, where he began to make radio sets and read Wireless World, Wilkes went to St John's College, Cambridge, in 1931, graduating as a Wrangler in the Mathematical Tripos in 1934. He then carried out research at the Cavendish Laboratory, becoming a demonstrator in 1937. During the Second World War he worked on radar, differential analysers and operational research at the Bawdsey Research Station and other air-defence establishments. In 1945 he returned to Cambridge as a lecturer and as Acting Director of the Mathematical (later Computer) Laboratory, serving as Director from 1946 to 1970.During the late 1940s, following visits to the USA for computer courses and to see the ENIAC computer, with the collaboration of colleagues he constructed the Cambridge University digital computer EDSAC (for Electronic Delay Storage Automatic Computer), using ultrasonic delay lines for data storage. In the mid-1950s a second machine, EDSAC2, was constructed using a magnetic-core memory. In 1965 he became Professor of Computer Technology. After retirement he worked for the Digital Electronic Corporation (DEC) from 1981 to 1986, serving also as Adjunct Professor of Computer Science and Electrical Engineering at the Massachusetts Institute of Technology from 1981 to 1985. In 1990 he became a research strategy consultant to the Olivetti Research Directorate.[br]Principal Honours and DistinctionsFRS 1956. First President, British Computer Society 1957–60. Honorary DSc Munich 1978, Bath 1987. Honorary DTech Linkoping 1975. FEng 1976. Institution of Electrical Engineers Faraday Medal 1981.Bibliography1948, "The design of a practical high-speed computing machine", Proceedings of the Royal Society A195:274 (describes EDSAC).1949, Oscillation of the Earth's Atmosphere.1951, Preparation of Programs for an Electronic Digital Computer, New York: Addison-Wesley.1956, Automatic Digital Computers, London: Methuen. 1966, A Short Introduction to Numerical Analysis.1968, Time-Sharing Computer Systems: McDonald \& Jane's.1979, The Cambridge CAP Computer and its Operating System: H.Holland.1985, Memoirs of a Computer Pioneer, Cambridge, Mass.: MIT Press (autobiography).Further ReadingB.Randell (ed.), 1973, The Origins of Digital Computers, Berlin: Springer-Verlag.KFBiographical history of technology > Wilkes, Maurice Vincent
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25 ballistic galvanometer
баллистический гальванометр
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[IEV number 313-01-31]EN
ballistic galvanometer
galvanometer intended to measure the value of an electric charge by reading the amplitude of the first swing of its moving element
[IEV number 313-01-31]FR
galvanomètre balistique
galvanomètre destiné à mesurer la valeur d'une charge électrique par l'observation de l’amplitude de la première oscillation de son équipage mobile
[IEV number 313-01-31]Тематики
- измерение электр. величин в целом
EN
DE
FR
Англо-русский словарь нормативно-технической терминологии > ballistic galvanometer
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См. также в других словарях:
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