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Qu'est-ce (qui) est propulsor - définition

MECHANICAL DEVICE THAT GIVES PROPULSION. THE WORD IS COMMONLY USED IN THE MARINE VERNACULAR, AND IMPLIES A MECHANICAL ASSEMBLY THAT IS MORE COMPLICATED THAN A PROPELLER

propulsor

¦ noun a ducted propeller swivelled to give forward, upward, or downward flight to an airship.

Propulsor

A propulsor is a mechanical device that gives propulsion. The word is commonly used in the marine vernacular, and implies a mechanical assembly that is more complicated than a propeller.

https://en.wikipedia.org/wiki/Propulsor

Spear-thrower

TOOL TO GIVE MORE LEVERAGE WHEN THROWING A SPEAR-LIKE PROJECTILE

Spear thrower; Spear-Thrower; Atladl; Atalatl; Atl-atl; At'latl; Atlatl; Adle-adle; Rigid spear thrower; Throwing board; Propulsaeur; Javelin propulsor; Atl atl; Nuqaq; Spearthrowers; Spear throwers; At-latl

A spear-thrower, spear-throwing lever or atlatl (pronounced or ; Nahuatl ahtlatl ) is a tool that uses leverage to achieve greater velocity in dart or javelin-throwing, and includes a bearing surface which allows the user to store energy during the throw.

https://en.wikipedia.org/wiki/Spear-thrower

Wikipédia

Propulsor

A propulsor is a mechanical device that gives propulsion. The word is commonly used in the marine vernacular, and implies a mechanical assembly that is more complicated than a propeller. The Kort nozzle, pump-jet and rim-driven thruster are examples.

An example propulsor is shown in the accompanying picture. It has a shroud which cuts down on blade-tip cavitation and radiated noise. It also has a rotor element and a stator. The stator concentrates the thrust in axial direction and reduces energy wasted in the tangential flow (therefore eliminating torque on the hull). The number of blades in the rotor and stator will typically be two different prime numbers to avoid standing waves. The blades in the rotor or the stator may be angled to further reduce noise. The physical design and layout is very much similar to a single stage axial-flow compressor.

https://en.wikipedia.org/wiki/Propulsor

Exemples du corpus de texte pour propulsor

1. Mediante el reciente lanzamiento del citado satelite ese pais isleno no disimula que "se ha establecido casi la tecnica del cohete propulsor por el combustible solido" que juega un importante rol en el desarrollo de misiles.

2. Como lo dijo el Presidente dominicano Leonel Fern?ndez durante la apertura la semana pasada de una cumbre anti–drogas del Caribe, las drogas est?n infiltrando "nuestras sociedades y siendo el propulsor del incremento de la criminalidad, la violencia y la inestabilidad". Su preocupaci?n es correspondida por otros l?deres caribe?os que la semana pasada firmaron la "Declaraci?n de Santo Domingo" comprometi?ndose a una mayor cooperaci?n en la vigilancia mar?tima y a?rea como tambi?n a incrementar los fondos para la prevenci?n y la educaci?n.