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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Hydrodynamic noise results from a combination of propeller cavitation and flow noises.  2, record 1, English, - hydrodynamic%20noise

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Le bruit hydrodynamique résulte de la combinaison des bruits de cavitation de l'hélice et du bruit d'écoulement.  1, record 1, French, - bruit%20hydrodynamique

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Low-frequency ship noise sources include propeller noise(cavitation, cavitation modulation at blade passage frequency and harmonics, unsteady propeller blade passage forces), propulsion machinery such as diesel engines, gears, and major auxiliaries such as diesel generators(Ross, 1976).  2, record 2, English, - propeller%20noise

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Bruit de fréquence musicale pure, entre 200 et 300 hertz, d'intensité très élevée, produit à partir d'une vitesse d'une dizaine de nœuds, par les vibrations mécaniques des pales d'hélice d'un navire sous l'action des tourbillons.  1, record 2, French, - chant%20d%27h%C3%A9lice

Record number: 2, Textual support number: 1 OBS

Le chant d'hélice peut être éliminé par chanfreinage des pales de l'hélice.  1, record 2, French, - chant%20d%27h%C3%A9lice

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Cavitation is the production and collapse of partial vacuum cavities in the water. It reduces the effectiveness of propellers, and also generates tremendous amounts of noise.  1, record 3, English, - partial%20vacuum%20cavity

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Au bout d’un moment, la vitesse de vaporisation atteint un seuil au-delà duquel ça ne peut plus augmenter. Il se produit alors un phénomène très connu qui tend à maintenir la valeur de la pression à la valeur de la pression tensorielle du fluide. Des cavités de vide partiel ou total se créent. C’est la cavitation.  1, record 3, French, - cavit%C3%A9%20de%20vide%20partiel

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

Noise from cavitating hydrofoils as influenced by boundary-layer development. [Paper by] William K. Blake and F. Ellsworth Geib, Jr.(...). This paper describes measurements of noise from cavitating flow over a hydrofoil.(Cavitation was generated on a hydrofoil in the presence of a separated laminar boundary layer on the one hand and of a fully turbulent attached boundary layer on the other).  2, record 4, English, - cavitating

Record number: 4, Textual support number: 1 OBS

cavitation: Disturbance around revolving propeller blades struts, etc., caused by collapse of transient pressure disturbances resulting from flow of water over their surfaces.  3, record 4, English, - cavitating

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Produisant un mouvement de cavitation.  2, record 4, French, - cavitant

Record number: 4, Textual support number: 1 CONT

[L'hydroptère] se justifie à chaque fois qu'il est souhaitable de disposer d'une plate-forme très stable: ce peut être le cas des utilisateurs militaires, lorsque l'hydroptère est utilisé comme plate-forme de tir. D'où l'intérêt manifesté par l'U.S. Navy et l'OTAN: côté vitesse, des progrès peuvent être attendus de l'utilisation sur les ailettes de profils cavitants et super-cavitants (profils à "base ventilée", etc.).  3, record 4, French, - cavitant

Record number: 4, Textual support number: 1 OBS

cavitation: Phénomène qui se produit lorsqu'une hélice tourne trop vite: l'air contenu dans l'eau forme une cavité gazeuse autour des pales de l'hélice qui tourne alors dans le vide.  4, record 4, French, - cavitant

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

intensity of an acoustic field at which acoustically-induced cavitation just begins to occur. Indications of this are : increased acoustic losses, increased non-linear distortion and the appearance of cavitation noise.  1, record 5, English, - cavitation%20threshold

Record number: 5, Textual support number: 1 CONT

Above the cavitation threshold the nuclei become unstable and collapse suddenly, radialing shock waves which appear as wide-band noise.  1, record 5, English, - cavitation%20threshold

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

seuil de la cavitation NPSH [net positive suction head]. [...] Dans l'écoulement des liquides, il existe [...] un seuil au-delà duquel la cavitation ne peut se produire et que nous pouvons traduire par la relation [où] la pression minimale en un point particulier de l'écoulement [est supérieure à la pression de vapeur saturante]  1, record 5, French, - seuil%20de%20la%20cavitation

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

noise produced by violent radial motion of cavitation nuclei under the influence of an alternating pressure field. Above the cavitation threshold the nuclei become unstable and collapse suddenly, radialing shock waves which appear as wide-band noise.  2, record 6, English, - cavitation%20noise

Record number: 6, Textual support number: 1 OBS

cavitation threshold: intensity of an acoustic field at which acoustically-induced cavitation just begins to occur.  2, record 6, English, - cavitation%20noise

Record number: 6, Textual support number: 2 OBS

cavitation nuclei: microscopic cavities which normally exist in any sample of water; often associated with suspended solid particles although they may exist alone.  2, record 6, English, - cavitation%20noise

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 OBS

cavitation: Formation de cavités, remplies de vapeur ou de gaz, au sein d'un liquide en mouvement (...)  2, record 6, French, - bruit%20de%20cavitation

Record 6,  Textual support,  Spanish