TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

The arbitrary level from which vertical displacement is measured. The datum for height measurement is the terrain directly below the aircraft or some specified datum; for pressure altitude, the level at which the atmospheric pressure is 29. 92 inches of mercury(1013. 2 m. bs) ;and for true altitude, mean sea level.  4, record 1, English, - vertical%20datum

Record number: 1, Textual support number: 1 CONT

A vertical datum is a surface of zero elevation to which heights of various points are referenced. Traditionally, vertical datums have used classical survey methods to measure height differences (i.e. geodetic levelling) to best fit the surface of the earth.  5, record 1, English, - vertical%20datum

Record number: 1, Textual support number: 1 OBS

altitude datum: term and definition standardized by NATO.  6, record 1, English, - vertical%20datum

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Niveau arbitraire à partir duquel les distances verticales sont mesurées. Le plan de référence pour les mesures de hauteur est soit le sol ou la mer immédiatement à la verticale de l'aéronef, soit un plan horizontal quelconque. Pour les altitudes-pressions, c'est le niveau qui correspond à la pression atmosphérique de 1013,2 mb (29,92 pouces de mercure). Pour l'altitude vraie, c'est le niveau moyen des mers.  4, record 1, French, - syst%C3%A8me%20de%20r%C3%A9f%C3%A9rence%20altim%C3%A9trique

Record number: 1, Textual support number: 1 OBS

référence d'altitude : terme et définition normalisés par l'OTAN.  5, record 1, French, - syst%C3%A8me%20de%20r%C3%A9f%C3%A9rence%20altim%C3%A9trique

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Nivel elegido arbitrariamente a partir del cual se miden las distancias verticales. El nivel de referencia para las medidas de altura es el terreno que está en la vertical de la aeronave u otro plano de referencia específico. Para las medidas de altitud, en función de la presión es el nivel para el cual la presión atmosférica es de 29,92 pulgadas de mercurio (76 cm de mercurio ó 1.013,2 mbs) y para la altura el nivel medio del mar.  1, record 1, Spanish, - referencias%20de%20altitud

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

Barometer whose sensitive element is composed of one or a series of aneroid capsules.  4, record 2, English, - aneroid%20barometer

Record number: 2, Textual support number: 1 CONT

Pressure is measured using a barometer. An aneroid barometer has a capsule [usually metallic] which collapses slightly when pressure increases and expands when it decreases. These motions are transferred to a dial and calibrated in either millimetres of mercury or millibars or inches.  5, record 2, English, - aneroid%20barometer

Record number: 2, Textual support number: 2 CONT

The aneroid barometer was invented by a Frenchman, Lucien Vidie, in 1843. He produced a metallic barometer which he called an aneroid, from the Greek, meaning "without liquid." The principle of the aneroid barometer is the change in height of a sealed metallic chamber which has flexible upper and lower surfaces. As the pressure changes, so the height of the chamber varies which, in turn, moves an index pointer.  6, record 2, English, - aneroid%20barometer

Record number: 2, Textual support number: 3 CONT

Aneroid barometer is temperature compensated at a given pressure level by adjustment of the residual gas in the aneroid or by a bimetallic link arrangement. The instrument is subject to uncertainties due to variations in the elastic properties of the spring and capsules, and due to wear in the mechanical linkages.  7, record 2, English, - aneroid%20barometer

Record number: 2, Textual support number: 1 OBS

aneroid barometer: term officially approved by the International Civil Aviation Organization (ICAO).  8, record 2, English, - aneroid%20barometer

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

[...] baromètre [dont] l'organe sensible [est] constitué par une ou plusieurs capsules anéroïdes dont la déformation élastique est fonction de la pression atmosphérique.  5, record 2, French, - barom%C3%A8tre%20an%C3%A9ro%C3%AFde

Record number: 2, Textual support number: 1 CONT

Le baromètre anéroïde est formé d'une capsule déformable vide d'air qui s'aplatit plus ou moins sous l'action de la pression atmosphérique. La déformation de la capsule est amplifiée par un système de leviers et transmise soit à une aiguille indicatrice, soit à un stylet enregistreur.  6, record 2, French, - barom%C3%A8tre%20an%C3%A9ro%C3%AFde

Record number: 2, Textual support number: 1 OBS

capsule anéroïde : Capsule métallique à parois minces, où l'on fait un vide partiel déterminé, munie d'un dispositif évitant l'écrasement par la pression atmosphérique et qui se déforme sous l'action de cette pression. (La mesure de cette déformation, par différentes techniques, permet d'obtenir la valeur de la pression.)  7, record 2, French, - barom%C3%A8tre%20an%C3%A9ro%C3%AFde

Record number: 2, Textual support number: 2 OBS

Le plus souvent, le baromètre anéroïde est à capsule métallique mais il peut également être à tube.  8, record 2, French, - barom%C3%A8tre%20an%C3%A9ro%C3%AFde

Record number: 2, Textual support number: 3 OBS

[Le baromètre à capsule] est le plus utilisé car le plus robuste. Il peut être enregistreur : barographe.  4, record 2, French, - barom%C3%A8tre%20an%C3%A9ro%C3%AFde

Record number: 2, Textual support number: 4 OBS

baromètre anéroïde : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).  9, record 2, French, - barom%C3%A8tre%20an%C3%A9ro%C3%AFde

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Barómetro cuyo elemento sensible es una o varias cápsulas aneroides.  3, record 2, Spanish, - bar%C3%B3metro%20aneroide

Record number: 2, Textual support number: 1 OBS

barómetro aneroide: término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).  4, record 2, Spanish, - bar%C3%B3metro%20aneroide

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

Absolute pressure in the intake manifold of an aircraft engine, expressed in inches of mercury that forces the mixture of fuel-air into the cylinder.  2, record 3, English, - manifold%20pressure

Record number: 3, Textual support number: 1 OBS

manifold: An engine chamber with several outlets through which fuel-air is distributed.  2, record 3, English, - manifold%20pressure

Record number: 3, Textual support number: 2 OBS

manifold pressure: term officially approved by the International Civil Aviation Organization (ICAO).  2, record 3, English, - manifold%20pressure

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Pression absolue dans le circuit d'admission, prise en un point de référence pour chaque type de moteur.  2, record 3, French, - pression%20d%27admission

Record number: 3, Textual support number: 1 OBS

pression d'admission : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).  3, record 3, French, - pression%20d%27admission

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 DEF

Presión absoluta [...] medida en el punto apropiado en el sistema de admisión y normalmente expresada en pulgadas de mercurio o milímetros de mercurio.  2, record 3, Spanish, - presi%C3%B3n%20de%20admisi%C3%B3n

Record number: 3, Textual support number: 1 OBS

presión de admisión: término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).  3, record 3, Spanish, - presi%C3%B3n%20de%20admisi%C3%B3n

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A unit of pressure equal to the pressure exerted by a column of mercury 1 inch high at sea level and at a temperature of 0 °C (32 °F).  4, record 4, English, - inch%20of%20mercury

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Unité de pression égale à 3,386 kPa [kilopascals].  4, record 4, French, - pouce%20de%20mercure

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

The cold soak filtration test determines if biodiesel shows precipitate formation upon cooling to temperatures above the cloud point.  3, record 5, English, - cold%20soak%20filtration%20test

Record number: 5, Textual support number: 1 OBS

The test is performed by placing 300 mL of biodiesel in a 500-mL glass bottle. The sample is then set in a liquid or air bath or chamber at 40 °F for 16 hours. The sample is then allowed to come to room temperature(around 70 °F) and filtered through a 47-mm diameter and 0. 7-μm nominal pore-sized glass fiber filter under vacuum of 25 inches of mercury under atmospheric pressure. The time required to filter 300 ml of biodiesel is reported.  3, record 5, English, - cold%20soak%20filtration%20test

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Essai de filtration par trempage à froid (EFTF) – Exigence la plus présente dans l’ASTM [American Society for Testing and Materials] D6751. Elle a été ajoutée en 2008 à la suite de l’obtention de données indiquant que certains mélanges de type B100 pouvaient former des précipités au-dessus du point de trouble. Dans des mélanges de pétrodiesel allant jusqu’à une teneur de 20 %, un mélange de type B100 satisfaisant aux exigences de la filtrabilité par trempage à froid ne forme aucun précipité.  2, record 5, French, - essai%20de%20filtration%20par%20trempage%20%C3%A0%20froid

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

An instrument that indicates in inches of mercury the pressure of the fuel/air mixture in the engine intake manifold.  2, record 6, English, - manifold%20pressure%20gauge

Record number: 6, Textual support number: 1 CONT

On an airplane fitted with a controllable pitch or a constant speed propeller, there are two instruments which indicate information about engine power output, the tachometer and the manifold pressure gauge. Settings on the manifold pressure gauge are controlled by the throttle. Colour range markings, similar to those on the tachometer, are incorporated on the dial of the manifold pressure gauge to indicate the normal operating range and operation limits.  2, record 6, English, - manifold%20pressure%20gauge

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

[Instrument qui] indique, en pouces de mercure, la pression du mélange air-carburant présent dans le collecteur d'admission.  1, record 6, French, - manom%C3%A8tre%20d%27admission

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

hectopascal: Unit of pressure in the SI system, equal to 10² Pa.  6, record 7, English, - hectopascal

Record number: 7, Textual support number: 1 CONT

Atmospheric pressure is measured in two units, hectopascals(hPa) and inches of mercury(Hg). The hectopascal is the international unit of measure for atmospheric pressure and inches of mercury are used in the U. S. for aviation purposes.  7, record 7, English, - hectopascal

Record number: 7, Textual support number: 2 CONT

In the U. S., air pressure at the surface is reported in inches of mercury while air pressure aloft is reported in millibars, also known as hectopascals(hPa). Scientists, however, generally use pressures in hectopascals. In the rest of the world, measurements are usually given in hectopascals although you will sometimes see them in centimeters of mercury, especially on older barometers. The term "hectopascals" is replacing the term "millibars. "  8, record 7, English, - hectopascal

Record number: 7, Textual support number: 1 OBS

A millibar is 1000 dynes per square centimeter, or 100 pascal (Pa). Surface pressure averages around 1013 millibars.  9, record 7, English, - hectopascal

Record number: 7, Textual support number: 2 OBS

[The] hectopascal ... is equivalent to one millibar in the CGS system.  6, record 7, English, - hectopascal

Record number: 7, Textual support number: 3 OBS

hectopascal; hPa: term and abbreviation officially approved by the International Civil Aviation Organization (ICAO).  10, record 7, English, - hectopascal

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Unité de mesure de la pression atmosphérique (symb. : hPa), valant cent pascals (et équivalant au millibar).  6, record 7, French, - hectopascal

Record number: 7, Textual support number: 1 CONT

L'unité légale de mesure de la pression, dans le système international, est le PASCAL (N/m²) ainsi que ses multiples et sous-multiples. [...] Une unité souvent employée est le millibar, sous-multiple du bar (système MTS), ainsi que le torr ou millimètre de mercure, unité ancienne rencontrée. Les météorologistes sont passés du millibar à l'hectopascal. 1 torr (mm Hg) = 133 Pa; 1 mbar = 100 Pa = 1 hPa.  7, record 7, French, - hectopascal

Record number: 7, Textual support number: 1 OBS

millibar : Ancienne unité de pression [atmosphérique] valant un millième de bar, remplacée [officiellement depuis 1986] par l'hectopascal.  8, record 7, French, - hectopascal

Record number: 7, Textual support number: 2 OBS

Un millibar (mbar) vaut 10^-3 bar, soit 10³, soit 0,750062 mm de mercure normal.  9, record 7, French, - hectopascal

Record number: 7, Textual support number: 3 OBS

L'hectopascal [...] est l'équivalent d'un millibar dans le système CGS.  10, record 7, French, - hectopascal

Record number: 7, Textual support number: 4 OBS

millibar, mb : terme et abréviation uniformisés par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes.  11, record 7, French, - hectopascal

Record number: 7, Textual support number: 5 OBS

hectopascal; hPa : terme et abréviation uniformisés par l'Organisation de l'aviation civile internationale (OACI).  12, record 7, French, - hectopascal

Record 7,  Textual support,  Spanish

Record number: 7, Textual support number: 1 DEF

Unidad de presión del sistema SI, igual a 10² Pa.  3, record 7, Spanish, - hectopascal

Record number: 7, Textual support number: 1 OBS

hectopascal: Equivale a un milibar en el sistema CGS.  3, record 7, Spanish, - hectopascal

Record number: 7, Textual support number: 2 OBS

hectopascal; hPa: término y abreviatura aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI).  4, record 7, Spanish, - hectopascal

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

The temperature at which the vapour pressure is equal to the standard sea-level atmospheric pressure(760 millimetres(29. 92 inches) of mercury). At sea level, water boils at 100°C(212°F). At higher altitudes the temperature of the boiling point is lower.  2, record 8, English, - normal%20boiling%20point

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Température d'ébullition d'un corps pur sous une pression constante égale à la pression atmosphérique normale. Exemple : la température d'ébullition normale de l'eau vaut 100 °C.  2, record 8, French, - temp%C3%A9rature%20d%27%C3%A9bullition%20normale

Record 8,  Textual support,  Spanish

Record number: 8, Textual support number: 1 DEF

Temperatura de ebullición correspondiente a una presión exterior de 1 atm.  1, record 8, Spanish, - temperatura%20de%20ebullici%C3%B3n%20normal

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

Rapid vertical oscillations of the column of a mercury barometer.  3, record 9, English, - pumping

Record number: 9, Textual support number: 1 CONT

The mercurial barometer... in its simplest form... consists of a glass tube a little more than 30 inches in length and of uniform internal diameter. With one end closed, the tube is filled with mercury, and inverted into a cup of mercury. The mercury in the tube falls until the column is just supported by the pressure of the atmosphere on the open cup, leaving a vacuum at the upper end of the tube. The height of the column indicates atmospheric pressure, greater pressures supporting higher columns of mercury. The mercurial barometer is subject to rapid variations in height, called pumping, due to pitch and roll of the vessel and temporary changes in atmospheric pressure in the vicinity of the barometer. Because of this... the mercurial barometer has been replaced at sea by the aneroid barometer.  4, record 9, English, - pumping

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

Rapides oscillations verticales de la colonne d'un baromètre à mercure.  1, record 9, French, - pompage

Record 9,  Textual support,  Spanish

Record number: 9, Textual support number: 1 DEF

Desplazamientos verticales rápidos que experimenta la columna de un barómetro de mercurio.  1, record 9, Spanish, - bombeo%20del%20mercurio

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

The gyro, of an attitude indicator that is driven by a vacuum system, requires 4 or more inches of mercury vacuum to operate and 5 minutes to get up to operational speed. An attitude indicator that is electrically driven is operational almost immediately.  1, record 10, English, - driven%20by%20a%20vacuum%20system

Record number: 10, Textual support number: 2 CONT

Air pressure differential is the principle on which the vacuum driven gyro instruments operate. A vacuum pump run by the airplane engine creates a partial vacuum in the system. A filtered air inlet upstream of the gyros allows air to rush into the system causing the gyro wheels to spin.  1, record 10, English, - driven%20by%20a%20vacuum%20system

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 CONT

Le gyroscope d'un horizon artificiel fonctionnant à dépression requiert une succion de 4 pouces de mercure ou plus, et un délai de 5 minutes pour atteindre sa vitesse de fonctionnement. L'horizon artificiel électrique est opérationnel presqu'instantanément.  1, record 10, French, - fonctionnant%20%C3%A0%20d%C3%A9pression

Record number: 10, Textual support number: 2 CONT

[...] «Contrôleur de vol Badin». Cet appareil combine : un anémomètre, une bille, un indicateur de virage gyroscopique à dépression et un niveau mesurant l'assiette longitudinale. C'est le premier équipement qui permette de faire du PSV (Pilotage Sans Visibilité) de façon contrôlée.  3, record 10, French, - fonctionnant%20%C3%A0%20d%C3%A9pression

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

Bootstrapping is sometimes confused with the condition known as overboost, but bootstrapping is not a condition which is detrimental to engine life. An overboost condition is one in which manifold pressure exceeds the limits prescribed for a particular engine and can cause serious damage. There are some systems that incorporate a pressure relief valve to prevent a serious overboost condition. The pressure relief valve is generally set to open at 1. 5 inches of mercury above the maximum allowable engine manifold pressure.  2, record 11, English, - overboost

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 CONT

Si l'objet essentiel des systèmes de gestion de vol est évidemment de réduire la consommation de carburant et d'accroître le rendement, ils ont aussi pour effet secondaire fort appréciable de prolonger la durée de vie des moteurs. Un contrôle strict des rapports de pression, pour les maintenir dans les limites fixées, réduit sensiblement les risques de surrégime; lorsque le calculateur de gestion est couplé aux commandes automatiques de gaz, ces risques se trouvent pratiquement éliminés.  1, record 11, French, - surr%C3%A9gime

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 OBS

the barometric range is from 28. 00 to 31. 00 inches of mercury(...)  1, record 12, English, - barometric%20range

Record 12,  Textual support,  French

Record 12,  Textual support,  Spanish