In the propulsion system with gear train, effect of backlash of the gear train is likely to appear in such a transient condition as in the astern operation, even outside the resonant region of torsional vibration. Accordingly, it is desirable to study the torsional vibration phenomena from the standpoint of non-linear vibration theory taking account of gear backlash in a transient condition. This paper reports the results of the authors' study on torsional vibration phenomena of turbine propulsion system of ULCC (Ultra Large Crude Oil Carrier) in the crash astern operation. The study consists of actual measurement of quill shaft torque fluctuation in the crash astern during the sea trial of the vessel, simulation of the phenomena by digital computer taking account of backlash and of consideration on peculiar phenomena of non-linear vibration system. On the basis of this study, the authors have investigated the process of teeth separation and gear hammering caused by various kinds of propeller excitations. (Wassmann)


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    Title :

    Behavior of propulsion system of turbine ship at crash astern operation


    Additional title:

    Das Antriebssystemverhalten von Turbinenschiffen bei Seenot-Rueckwaertsbetrieb


    Contributors:
    Otsuki, A. (author) / Matsuda, M. (author)

    Published in:

    Publication date :

    1980


    Size :

    9 Seiten, 24 Bilder, 2 Tabellen


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    Japanese




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