Results are presented for a four-bladed .60 expanded-area ratio merchant-ship propeller series tested in the cavitation tunnel in the Department of Naval Architecture and Shipbuilding, King’s College, Newcastle upon Tyne, over a wide range of advance coefficient and at cavitation numbers from the low values corresponding to twin-screw passenger-liner propellers up to the higher values for a large single-screw cargo ship. The variations studied are pitch-ratio, distribution of area and distribution of pitch, and, to some extent, changes in blade-section shape, and the paper includes design charts in the usual B p δ form, together with simple cavitation diagrams derived from the test results.

    Most of the work has been carried out in a uniform stream, but the final section relates to tests made in a radially variable stream velocity.

    The paper also considers specific designs at each end of the merchant-ship range; four- and five-bladed propellers for a passenger liner; five- and six-bladed propellers for a large tanker. Som observations of variable-wake tests are given.


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    Title :

    Propeller cavitation: Further tests on 16in. propeller models in the King’s College cavitation tunnel1


    Subtitle :

    Merchant ship propellers with four, five and six blades


    Contributors:
    Burrill, L.C. (author) / Emerson, A. (author)

    Published in:

    Publication date :

    1963-04-01


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






    Propeller cavitation

    Eggert, E.F. | Engineering Index Backfile | 1932


    Propeller cavitation

    Eggert, E.F. | Engineering Index Backfile | 1932