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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A device, often a small vane attached to a surface, to produce one or more discrete vortices which trail downstream adjacent to the surface, promote mixing in the boundary layer and delay boundary-layer separation.  2, record 1, English, - vortex%20generator

Record number: 1, Textual support number: 1 OBS

vortex generator: designation and definition standardized by the British Standards Institution (BSI).  3, record 1, English, - vortex%20generator

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

The layer immediately next to a fixed boundary in which laminar flow prevails.  4, record 2, English, - laminar%20boundary%20layer

Record number: 2, Textual support number: 1 CONT

Aircraft... in general,... are not certified to fly with any contamination [(e. g. possible contaminants : frost, squashed bugs, anti-icing fluids, etc.) ] on the lift and control surfaces. However,... small amounts of surface contamination usually result in roughness. This causes local changes in the pressure gradient in the boundary layer and can cause turbulence in a laminar flow boundary layer or complete flow separation from the surface.  3, record 2, English, - laminar%20boundary%20layer

Record number: 2, Textual support number: 2 CONT

Above a surface, a laminar layer will develop and fluid velocity will increase with distance from the surface, but not indefinitely. At some point, flow will become turbulent, with the laminar sublayer separating the turbulent layer from the surface. In the real world, most laminar boundary layers are extremely thin (order of 1 mm), but can be of biological importance, for example, next to plant leaves or as invertebrate refuges in streams.  5, record 2, English, - laminar%20boundary%20layer

Record number: 2, Textual support number: 1 OBS

... flow is smooth and nonturbulent.  5, record 2, English, - laminar%20boundary%20layer

Record number: 2, Textual support number: 2 OBS

The equations of motion of the fluid in the laminar boundary layer are the Navier-Stokes equations containing only the inertia and molecular viscosity terms.  6, record 2, English, - laminar%20boundary%20layer

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Couche voisine d'une surface limite donnée dans laquelle les forces de viscosité moléculaire sont grandes parce que le gradient de vitesse normal à la surface limite est élevé.  2, record 2, French, - couche%20limite%20laminaire

Record number: 2, Textual support number: 1 CONT

La présence d'une couche limite laminaire à la surface de notre peau limite notamment nos échanges de chaleur avec l'air extérieur et permet de maintenir la température de surface de nos mains ou de notre figure à une valeur voisine de 30 °C même si l'air extérieur est froid.  3, record 2, French, - couche%20limite%20laminaire

Record number: 2, Textual support number: 1 OBS

Les équations du mouvement du fluide dans la couche limite laminaire sont les équations de Navier-Stokes ne contenant que les termes d'inertie et de viscosité moléculaire.  2, record 2, French, - couche%20limite%20laminaire

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Capa inmediata a una superficie límite dada en la cual son elevadas las fuerzas de viscosidad molecular porque es alto el gradiente de velocidad normal a la superficie límite.  1, record 2, Spanish, - capa%20l%C3%ADmite%20laminar

Record number: 2, Textual support number: 1 OBS

Las ecuaciones de movimiento del fluido en la capa límite laminar son las de Navier-Stokes, que contienen sólo los términos de inercia y de viscosidad molecular.  1, record 2, Spanish, - capa%20l%C3%ADmite%20laminar

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

Control by artificial means of the development of the boundary layer with the object of affecting its transition or separation.  2, record 3, English, - boundary%20layer%20control

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Le contrôle de la couche limite permet un meilleur écoulement de flux en réduisant ou en éliminant les effets aérodynamiques indésirables.  2, record 3, French, - contr%C3%B4le%20de%20la%20couche%20limite

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

The wing profile and configuration are specifically tailored to delay boundary layer airflow separation to a higher Mach number(0. 78), and the drag rise due to Mach-induced separation is minimized.  1, record 4, English, - boundary%20layer%20airflow%20separation

Record number: 4, Textual support number: 1 OBS

Separation. An airflow is said to become separated from the object around which it is moving when the flow ceases to follow the contours of the body but instead features turbulent mixing and flow reversal close to the surface.  6, record 4, English, - boundary%20layer%20airflow%20separation

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Le profil et la configuration ont en effet été conçus pour retarder au maximum le décollement des filets d'air jusqu'à un nombre de Mach élevé (0.78), ce qui a pour effet de diminuer la traînée dans de fortes proportions, et de permettre d'accroître la vitesse de vol ou la charge utile, ou encore d'abaisser la consommation de carburant.  2, record 4, French, - d%C3%A9collement%20des%20filets%20d%27air

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

A flap over the upper surface of which air or other gas is ejected with sufficient momentum to increase its effectiveness, and prevent boundary layer separation.  2, record 5, English, - blown%20flap

Record number: 5, Textual support number: 1 OBS

blown flap: term standardized by ISO.  3, record 5, English, - blown%20flap

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Ce nouvel appareil [...] serait propulsé par des Rolls-Royce Spey et doté de volets soufflés ainsi que de dispositifs d'orientation de la poussée.  3, record 5, French, - volet%20souffl%C3%A9

Record number: 5, Textual support number: 1 OBS

Depuis l'avènement des moteurs à réaction, pour souffler sur les volets encore plus énergiquement que par l'effet naturel des fentes, on dispose d'air comprimé prélevé sur le compresseur du moteur; une autre solution consiste à souffler directement sur les volets le flux d'air issu des réacteurs.  4, record 5, French, - volet%20souffl%C3%A9

Record number: 5, Textual support number: 2 OBS

volet à soufflage : terme normalisé par l'ISO.  5, record 5, French, - volet%20souffl%C3%A9

Record 5,  Textual support,  Spanish