TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 OBS

aerofoil blade section : term standardized by ISO in the 3715 standard published in 1978, but not included in the 2002 version.  2, record 1, English, - aerofoil%20blade%20section

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

profil d'aile portante; section biconvexe : termes normalisés par l'ISO dans la norme 3715 de 1978, mais non repris dans l'édition de 2002.  2, record 1, French, - profil%20d%27aile%20portante

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Airfoil blade fans ... are the most efficient of all centrifugal fans. These fans are most applicable to large systems where the energy saving owing to their high efficiency offsets their relatively high cost. The blades, which usually number ten to sixteen on the impeller, are contoured to react like an airplane wing. Airfoil fans produce extremely smooth flows and, for a given use, are the highest speed centrifugal fans. These fans have stable operation and low noise level over their full range. Airfoil blades are expensive to produce and repair, limiting their use to clean, nonabrasive gases. The construction of the scroll, the close internal clearances, and the precise alignment of the impeller and inlet bell are features which aid in attaining the high efficiencies of these fans.  3, record 2, English, - airfoil%20fan

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Les ventilateurs à pales à profil aérodynamique (...) sont les ventilateurs centrifuges les plus efficaces. Il se prêtent surtout aux gros systèmes où les économies d'énergie entraînées par leur haute efficacité compensent leur coût relativement élevé. Les dix à seize pales montées sur la roue sont profilées de façon à agir comme une aile d'avion. Les débits s'écoulant de ces ventilateurs sont très uniformes et, pour une application donnée, les ventilateurs centrifuges opèrent à haute vitesse. Leur fonctionnement est stable et le niveau de bruit est très faible sur toute l'échelle des valeurs. Comme ces pales coûtent cher à fabriquer et à réparer, on limite leur utilisation aux gaz propres non abrasifs.  1, record 2, French, - ventilateur%20%C3%A0%20pales%20%C3%A0%20profil%20a%C3%A9rodynamique

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Airfoil blade fans ... are the most efficient of all centrifugal fans ... The blades which usually number ten to sixteen on the impeller, are contoured to react like an airplane wing ... Airfoil blades are expensive to produce and repair, limiting their use to clean, nonabrasive gases.  5, record 3, English, - airfoil%20blade

Record number: 3, Textual support number: 2 CONT

Centrifugal fans are enclosed in a scroll-shaped housing ... Impeller blades may be radial, forward-curved, backward-inclined, or airfoil. When large volumes of air are moved, airfoil or backward-inclined blades are preferable because of higher efficiencies.  3, record 3, English, - airfoil%20blade

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 OBS

Les ventilateurs à pales à profil aérodynamique [...] sont les ventilateurs centrifuges les plus efficaces. [...] Les dix à seize pales montées sur la roue sont profilées de façon à agir comme une aile d'avion. [...] Comme ces pales coûtent cher à fabriquer et à réparer, on limite leur utilisation aux gaz propres non abrasifs.  1, record 3, French, - pale%20%C3%A0%20profil%20a%C3%A9rodynamique

Record number: 3, Textual support number: 2 OBS

Il existe de nombreuses variantes de [ventilateurs axiaux], du ventilateur le plus simple à hélice équipé de pales en acier embouti fixées à un moyeu, aux ventilateurs équipés de pales en aluminium coulé à pas variable ayant un profil aérodynamique de haute précision tournant à l'intérieur d'un carter tubulaire.  4, record 3, French, - pale%20%C3%A0%20profil%20a%C3%A9rodynamique

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

BERP blades. [a]... new design composite rotor blades, developed by Westland Helicopters Ltd in the UK... produce 30 per cent more lift and could give 45 km more forward speed than conventional blades of the same size. This design, with its characteristic "paddle" tip... features an all-composite blade using various cambered aerofoil sections along its length, culminating in thin, high-speed sections in the swept, extended-chord tip.  2, record 4, English, - BERP%20blade

Record number: 4, Textual support number: 1 OBS

British Experimental Rotor Program.  3, record 4, English, - BERP%20blade

Record number: 4, Textual support number: 2 OBS

BERP blade: term officialized by the ATSC - Helicopters.  3, record 4, English, - BERP%20blade

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 OBS

pale BERP : terme uniformisé par le CUTA - Hélicoptères.  2, record 4, French, - pale%20BERP

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

The X-wing has emerged from the circulation controlled rotor(CCR) in which a hollow blade of roughly oval aerofoil section, that is, without a real lifting profile at all, can be made to lift effectively by blowing a layer of air through a slot and across the curved Coanda surface which forms the trailing-edge. While this in itself produces lift, the air jet can be so modulated as the rotor turns that it has the same effect as the cyclic pitch changing of the normal rotor. Finally, a further jet can be blown through a second slot near the leading-edge of the blade so that it restores the lost lift of the retreating blade. This fore-and-aft blowing is the key to the stopped-rotor X-wing.  1, record 5, English, - circulation%20controlled%20rotor

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

The face of a propeller blade formed by the lower boundaries of the blade elements considered as aerofoil section.  1, record 6, English, - pressure%20face

Record 6,  Textual support,  French

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

BERP blades. [a]... new design composite rotor blades, developed by Westland Helicopters Ltd in the UK... produce 30 per cent more lift and could give 45 km more forward speed than conventional blades of the same size. This design, with its characteristic "paddle" tip... features an all-composite blade using various cambered aerofoil sections along its length, culminating in thin, high-speed sections in the swept, extended-chord tip.  1, record 7, English, - BERP%20blade

Record 7,  Textual support,  French

Record 7,  Textual support,  Spanish