instrument landing system

instrument landing system

      electronic guidance system designed to help airline pilots align their planes with the centre of a landing strip during final approach under conditions of poor visibility. The ground equipment of the ILS consists of two directional transmitters that send out radio beams, sometimes of microwave frequencies (i.e., frequencies of more than 1,000 MHz), from either side of the runway's centreline. The radio pulses are picked up by instruments on the plane and then processed and converted into precise directional and altitude information. These data are shown on an instrument display in the form of horizontal and vertical lines, which enable the pilot to determine his exact position in relation to the runway and maneuver his craft into proper alignment with it. The ILS can be tied into a plane's automatic pilot, whereby ground-based instruments guide the plane into position while those on the aircraft control airspeed by means of an automatic throttle. The instrument landing system was introduced in 1929 and was approved and adopted by the International Civil Aviation Organization (q.v.) in 1949.

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Universalium. 2010.

Look at other dictionaries:

  • Instrument landing system — Pour les articles homonymes, voir ILS. L Instrument Landing System (ILS) ou Système d atterrissage aux instruments est le moyen de radio navigation le plus précis utilisé pour l atterrissage IFR. Sommaire 1 Généralités …   Wikipédia en Français

  • Instrument landing system — The Instrument Landing System (ILS) is a ground based instrument approach system that provides precision guidance to an aircraft approaching a runway, using a combination of radio signals and, in many cases, high intensity lighting arrays to… …   Wikipedia

  • Instrument Landing System — Abbildung der Sendekeulen von Localizer und Glideslopes Das Instrumentenlandesystem (engl. instrument landing system, ILS) ist ein bodenbasiertes System, das den Piloten eines Flugzeuges bei Anflug und Landung mittels zweier Leitstrahlen,… …   Deutsch Wikipedia

  • Instrument Landing System — Pour les articles homonymes, voir ILS. Principe du Microwave Landing System, évolution de l ILS L Instrument Landing System (ILS) ou Système d atterrissage aux instruments est le moyen de radio navigation le plus …   Wikipédia en Français

  • instrument landing system — A radio aid to navigation intended to facilitate aircraft in landing. It provides lateral and vertical guidance to the optimum point of landing. The various components of an instrument landing system are the localizer, which guides the aircraft… …   Aviation dictionary

  • instrument landing system — prietaisinė tūpimo sistema statusas T sritis radioelektronika atitikmenys: angl. instrument landing system vok. Instrumentenlandesystem, n rus. система посадки по приборам, f pranc. système d atterrissage par instruments, m …   Radioelektronikos terminų žodynas

  • instrument landing system — tūpimo pagal prietaisus sistema statusas T sritis Gynyba apibrėžtis Radionavigacinė tūpimo sistema, padedanti valdyti orlaivį vertikalioje ir horizontalioje plokštumose. Kartais rodo atstumą iki tūpimo taško. atitikmenys: angl. instrument landing …   NATO terminų aiškinamasis žodynas

  • instrument landing system — A system of radio navigation intended to assist aircraft in landing which provides lateral and vertical guidance, which may include indications of distance from the optimum point of landing. Also called ILS …   Military dictionary

  • Instrument Landing System — ILS, radio system in an airport that directs a pilot in landing an aircraft in conditions of limited visibility …   English contemporary dictionary

  • instrument landing system — noun a radio navigation landing aid which provides an approaching aircraft with lateral and vertical guidance and with marker beacon indications at specified points …   Australian-English dictionary

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