Rolls-royce Aktiebolag

Christer H&auml;ger

Sven-Gunnar Karlsson

Gunnar Styrud

Jens Tornblad

The invention comprises a propulsion system for ships comprising an impeller ( ), a stator shell ( ), and a impeller housing ( ) for achieving a waterjet, a shaft ( ) for the propulsion of the impeller ( ), and a bearing arrangement for the shaft ( ) in the stator shell ( ), and preferably a sealing ( ) of the shaft ( ) in the impeller housing ( ), wherein said bearing arrangement comprises at least one sliding bearing unit ( ) intended to carry axial load, and which sliding bearing preferably is water lubricated.

Propulsion system for a ship

A propulsion system for ships having an impeller ( ), a stator shell ( ), and an impeller housing ( ) for achieving a water jet, a shaft ( ) for the propulsion of the impeller ( ), and a bearing arrangement for the shaft ( ) in the stator shell ( ), and preferably a sealing ( ) of the shaft ( ) in the impeller housing ( ), wherein the shaft ( ) 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 ( B, A) and via the bearing arrangement which is rigid as to bending and handles the axial load, to the stator shell ( ), such that a high power density is achieved.

Growing community of inventors

Kristinehamn, Sweden

Christer Häger

Growing community of inventors

Kristinehamn, Sweden

Christer H&auml;ger

Christer Häger