RECTIFYNG DEVICE IN SHIP

PURPOSE:To enhance the propelling efficiency of a ship, by fitting a ring-like structure in a hull in such a way that a space (d) is defined between the rear end edge of the ring-like structure and a propeller, and as well by providing a plurality of water jet ports in the stern bilge section of the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YAGI HIKARI, NOJIRI TAKEO, SOEJIMA SHIYUNJI, IRIE YASUO, YOSHIDA KAZUO
Format:	Patent
Sprache:	eng
Schlagworte:	CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MARINE PROPULSION OR STEERING PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To enhance the propelling efficiency of a ship, by fitting a ring-like structure in a hull in such a way that a space (d) is defined between the rear end edge of the ring-like structure and a propeller, and as well by providing a plurality of water jet ports in the stern bilge section of the hull, front of the ring- like structure. CONSTITUTION:A ring-like structure 1 is attached to a hull 5 in such a way that a space (d) is defined between the rear end edge of the ring-like structure and a propeller 4, and the ring-like structure 1 is fitted in the hull 5, more than 20% of the length L of the upper section of the ring-like structure 1. Further, a plurality of water jet ports 8 are provided in both sides of the stern bilge section 5' of the hull 5, front of the ring-like structure 1. By water streams jetted from these water jet ports 8 to three-dimentional separation vortices, the generation of three-dimentional vortices may be prevented.