TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
DOWN DRAFT [2 records]
Record 1 - internal organization data 2004-10-21
Record 1, English
Record 1, Subject field(s)
- Atmospheric Physics
- Aerodynamics and Theory of Gases
- Aircraft Piloting and Navigation
Record 1, Main entry term, English
- downdraught
1, record 1, English, downdraught
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- downdraft 2, record 1, English, downdraft
correct
- down draft 3, record 1, English, down%20draft
correct
- air pocket 4, record 1, English, air%20pocket
correct, see observation, obsolete
- air bump 5, record 1, English, air%20bump
avoid, see observation
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A relative small scale downward current of air; often observed on the lee side of large objects restricting the smooth flow of air, or in precipitation areas in or near cumuliform clouds. 2, record 1, English, - downdraught
Record number: 1, Textual support number: 1 OBS
air pocket: an expression used in the early days of aviation for a downdraft. Pioneer pilots at first imagined these downdrafts to be "pockets" in which there was insufficient air to support the plane. 6, record 1, English, - downdraught
Record number: 1, Textual support number: 2 OBS
air pocket: colloquial. 7, record 1, English, - downdraught
Record number: 1, Textual support number: 3 OBS
The terms "hole in the air" and "hole" are slang. 8, record 1, English, - downdraught
Record number: 1, Textual support number: 4 OBS
The terms "air bump" and "bump" are erroneously used to mean air pocket. 8, record 1, English, - downdraught
Record 1, Key term(s)
- down draught
- hole in the air
- hole
- bump
Record 1, French
Record 1, Domaine(s)
- Physique de l'atmosphère
- Théorie des gaz et aérodynamique
- Pilotage et navigation aérienne
Record 1, Main entry term, French
- courant descendant
1, record 1, French, courant%20descendant
correct, masculine noun, officially approved
Record 1, Abbreviations, French
Record 1, Synonyms, French
- rabattant 2, record 1, French, rabattant
correct, see observation, masculine noun, officially approved
- trou d'air 3, record 1, French, trou%20d%27air
correct, see observation, masculine noun, officially approved
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Mouvement vers le bas d'une colonne d'air, habituellement associé à un nuage convectif. Le courant est à l'échelle du nuage. 4, record 1, French, - courant%20descendant
Record number: 1, Textual support number: 1 CONT
Le mouvement de l'air turbulent se manifeste sous forme de poussées momentanées et rapides qui peuvent présenter une orientation absolument quelconque. Parmi celles-ci, on peut distinguer : les rafales qui ne concernent que les variations de la vitesse horizontale du vent, sans modification de direction; les mouvements verticaux qui englobent tous les courants aériens ascendants ou descendants. 5, record 1, French, - courant%20descendant
Record number: 1, Textual support number: 1 OBS
Le terme «rabattant» semble employé par les pilotes pour décrire le phénomène de courant descendant lors du survol des régions montagneuses. Cependant, cette particularité n'est consignée dans aucune source. De plus, le terme «rabattant» est un terme de jargon. 6, record 1, French, - courant%20descendant
Record number: 1, Textual support number: 2 CONT
On a attribué longtemps la turbulence à la présence de «trous d'air», en fait il n'y a pas de «trous» dans l'air, la turbulence est généralement due à des déflections vers le haut ou vers le bas du vent horizontal. 7, record 1, French, - courant%20descendant
Record number: 1, Textual support number: 2 OBS
Le terme «trou d'air» n'est pas qualifié de terme vieilli dans les dictionnaires contrairement à son équivalent anglais «air pocket». 6, record 1, French, - courant%20descendant
Record number: 1, Textual support number: 3 OBS
Les termes «courant descendant», «rabattant» et «trou d'air» ont été uniformisés par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes. 6, record 1, French, - courant%20descendant
Record 1, Key term(s)
- descendance
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Física de la atmósfera
- Aerodinámica y teoría de los gases
- Pilotaje y navegación aérea
Record 1, Main entry term, Spanish
- corriente descendente
1, record 1, Spanish, corriente%20descendente
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- corriente de aire descendente 2, record 1, Spanish, corriente%20de%20aire%20descendente
correct, feminine noun
- bolsa de aire 3, record 1, Spanish, bolsa%20de%20aire
correct, feminine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Movimiento hacia abajo de una columna de aire, asociada habitualmente a una nube convectiva. La corriente es de la escala de una nube. 4, record 1, Spanish, - corriente%20descendente
Record 2 - internal organization data 1975-03-11
Record 2, English
Record 2, Subject field(s)
- Burners and Steamfitting
Record 2, Main entry term, English
- down draught 1, record 2, English, down%20draught
Record 2, Abbreviations, English
Record 2, Synonyms, English
- down draft 1, record 2, English, down%20draft
Record 2, Textual support, English
Record number: 2, Textual support number: 1 OBS
--a draught is initiated at the open air end in the direction of the base of the chimney; sometimes due to the fact that the chimney is not high enough above the roof ridge. 1, record 2, English, - down%20draught
Record 2, French
Record 2, Domaine(s)
- Fumisterie et brûleurs
Record 2, Main entry term, French
- rupture de tirage 1, record 2, French, rupture%20de%20tirage
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
le phénomène de -- se produit quand l'air froid extérieur entre par la souche (ou par un autre orifice) et descend dans le conduit, s'opposant au mouvement ascensionnel des fumées 1, record 2, French, - rupture%20de%20tirage
Record 2, Spanish
Record 2, Textual support, Spanish
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