Most small naval craft use commercially available propellers on inclined shafts as thrusters. Information about the forces generated by inclined-shaft propellers is scarce. To help the designer of small craft, an experimental program was undertaken to evaluate commercially available propeller performance when inclined to the oncoming flow. A series of four commercial propellers with pitch ratios of 0.8, 1.0, 1.2, and 1.4 were characterized over a range of shaft angles, cavitation numbers and advanced coefficients. Besides the usual shaftline thrust and torque, horizontal and vertical side forces were also measured. The results of these experiments support the previous assumption that a propeller on an inclined shaft may produce more forward thrust than the same propeller on a horizontal shaft. The paper contains propeller characteristic curves and lift- and side-force data that are directly applicable in the design of high-performance small craft. (Author)


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    Title :

    Inclined-Shaft Propeller Performance Characteristics


    Contributors:
    J. G. Peck (author) / D. H. Moore (author)

    Publication date :

    1974


    Size :

    53 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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