Propulsion system for a ship

The invention comprises a propulsion system for ships comprising an impeller (13, 14), a stator shell (1), and an impeller housing (3) for achieving a water jet, a shaft (11, 12) for the propulsion of the impeller (13), and a bearing arrangement for the shaft (11, 12) in the stator shell (1), and pr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KARLSSON, SVEN-GUNNAR, HAGER, CHRISTER, TORNBLAD, JENS, TYRUD, GUNNAR
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention comprises a propulsion system for ships comprising an impeller (13, 14), a stator shell (1), and an impeller housing (3) for achieving a water jet, a shaft (11, 12) for the propulsion of the impeller (13), and a bearing arrangement for the shaft (11, 12) in the stator shell (1), and preferably a sealing (15) of the shaft (11, 12) in the impeller housing (3), wherein the shaft (11, 12) consists of a light weight shaft, which has considerably lower bending rigidity than a homogenous, conventional steel shaft, and the driving force is transmitted via at least one non-flexible coupling (11B, 12A) and via said bearing arrangement which is rigid as to bending and handles the axial load, to the stator shell (1), such that a high power density is achieved.