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MARINE VESSEL PROPULSION SYSTEM WITH A NOZZLE AND A PROPELLER
MARINE VESSEL PROPULSION SYSTEM WITH A NOZZLE AND A PROPELLER
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机译:带有喷嘴和螺旋桨的船舶推进系统
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摘要
The invention relates to a ship propulsion system comprising a nozzle body and a propeller enclosed by said nozzle body; the nozzle body has an inner surface which forms a flow channel, and further an outer surface; a constriction is situated between the inlet plane and the outlet plane of the flow channel; as seen in an axial sectional view, the inner boundary surface of the flow channel has a first contour between the inlet plane and the constriction, and a second contour between the constriction and the outlet plane; the constriction is situated at a distance of 0.25 to 0.55 of the length of the nozzle body as measured from the inlet plane, preferably 0.3 to 0.4.
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