Wärtsilä NDSFinland, has completed shipboard trials with a 5175 tdw paper carrier of 101.9 m length equipped with a Propac propulsion package comprising a 6300 kW medium speed diesel engine, 4.5 m diameter propeller, gearbox and PropacRudder. The PropacRudder features a streamlined torpedo-shaped bulb on the rudder horn immediately abaft and coaxial with the propeller hub. Tests at design draft indicated a 10 % reduction in power consumption for the same speed compared to conventional flap rudder. Pressure impulses against the hull were reduced by 40 %. The propeller-induced noise level is very low across the range of pitch settings with constant propeller revolutions. Noisy face cavitation or hull vibration problems at higher frequencies do not exist. The vessel has proven its good maneuvrability during low-speed operation even in high wind and with a fast current. Other installations will follow.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    PropacRudder benefits confirmed in service


    Additional title:

    Vorteile des PropacRuders im Betrieb nachgewiesen


    Published in:

    Publication date :

    2000


    Size :

    2 Seiten, 4 Bilder



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English