Water jet propulsion system for watercraft

Details Water jet propulsion system for watercraft Water jet propulsion system for watercraft

B - Operations, Transporting

63

H

B63H 11/10 (2006.01) B63H 11/08 (2006.01)

Patent

CA 2263684

Water jet ejection nozzles (2, 3, 4) different in ejection bore diameter or controllable of ejection bore diameter are arranged in a vertically spacing manner and fluid paths connected to the ejection nozzles are provided with open-close valves (6, 7, 8) to be individually controlled, or a water jet ejection nozzle (50; 60) having a controllable ejection bore diameter is vertically driven, for water jet propulsion to be in accordance with a varied draft position of a vessel.

L'invention concerne un système d'hydropropulsion, dans lequel la position verticale du jet d'eau varie en fonction du tirant d'eau de l'embarcation. Une pluralité de buses de propulsion à jet d'eau (2, 3, 4), différentes les unes des autres ou à diamètre de jet réglable, sont espacées dans le sens vertical. Dans un tel système, soit les vannes (6, 7, 8) disposées dans les passages d'eau conduisant aux buses à jet sont commandées de façon indépendante, soit les buses (50, 60) à jet d'eau à diamètre de jet réglable sont entraînées verticalement.

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