Procedures for making screw performance estimates, propulsion estimates and screw design calculations for screws of different diameters operating at varying rates of rotation in propelling hulls of varying aperture size, and application of results to propulsion estimates and design calculations for large tanker screw; significant improvements can be achieved by adoption of large diameter screws of up to 30 ft in diam running at low speeds (75 rpm) and driven via geared turbines in lieu of screws of about 24 ft diam running at moderate speeds (110 rpm) and directly driven by diesel engines; former gave increase in trial speed of 3%, in screw efficiency of 18% and in propulsive efficiency of 10%.


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    Titel :

    Optimum performance screws for large tankers


    Weitere Titelangaben:

    Shipbldg Shipg Rec


    Beteiligte:
    O'Brien, T.P. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1966


    Format / Umfang :

    5 pages


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Optimum Structural Design Of Double Hull Tankers

    Jang, C. D. / Na, S. S. / Institute of Marine Engineers (Sydney Branch) | British Library Conference Proceedings | 1993



    Large Canadian tankers

    Engineering Index Backfile | 1955


    Large European tankers

    Engineering Index Backfile | 1950


    Optimum Structural Design of Double Hull Oil Tankers

    Jang, C. D. / Na, S. S. / Wessex Institute of Technology et al. | British Library Conference Proceedings | 1992