Title:
船舶用のウォータージェット推進システムの方法およびシステム
Document Type and Number:
Japanese Patent JP5669719
Kind Code:
B2
Abstract:
A system and method of starting a water jet propulsion system for a ship in which the propulsion system includes a stator shell adapted to be mounted to the hull and having a nozzle ending in an outlet with a cross-sectional outlet area, an impeller housing attached to the stator shell and having an upstream inlet, and an impeller rotatably mounted in the impeller housing for receiving water from the inlet and discharging it through the nozzle of the stator shell so as to create a water jet upon rotation of the impeller. The method includes reducing the outlet area by partly closing the nozzle during a start up phase of the water jet propulsion system, wherein there is provided a back flow hindering arrangement arranged to hinder air to enter into the impeller housing via the nozzle.
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Inventors:
カールソン、 スヴェン−グンナー
アールトヤルヴィ、 レイマ
アンデション、 ラーシュ
アールトヤルヴィ、 レイマ
アンデション、 ラーシュ
Application Number:
JP2011501749A
Publication Date:
February 12, 2015
Filing Date:
March 26, 2009
Export Citation:
Assignee:
ロールス−ロイス アクチボラグＲＯＬＬＳ−ＲＯＹＣＥ ＡＫＴＩＥＢＯＬＡＧ
International Classes:
B63H11/10; B63H11/08
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata