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1984•International Congress on Marine Technology, 3rd, May-June 1984Requires access

ON THE INCREASE OF PROPELLER OPERATIONAL RANGE AND TOTAL EFFICIENCY

K Holden, K Thorgaard, R Frostad

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Abstract

The advantages of a skew propeller related to an increase of the operational range without modifications of the optimum design are discussed. Special attention is paid to variations of blade area and radial loading distributions and the influence on pressure fluctuations on the hull, pressure side cavitation at zero thrust/full RPM and blade strength problems. Further, the effect of propeller position on total efficiency is discussed with respect to application and limitations of model testing procedures.

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What this paper is about

The advantages of a skew propeller related to an increase of the operational range without modifications of the optimum design are discussed. Special attention is paid to variations of blade area and radial loading distributions and the influence on pressure fluctuations on the hull, pressure side cavitation at zero thrust/full RPM and blade strength problems. Further, the effect of propeller position on total efficiency is discussed with respect to application and limitations of model testing procedures.

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Available abstract

The advantages of a skew propeller related to an increase of the operational range without modifications of the optimum design are discussed. Special attention is paid to variations of blade area and radial loading distributions and the influence on pressure fluctuations on the hull, pressure side cavitation at zero thrust/full RPM and blade strength problems. Further, the effect of propeller position on total efficiency is discussed with respect to application and limitations of model testing procedures.

Key concepts: Propeller, Skew, Hull, Thrust, Range (aeronautics), Propulsive efficiency, Blade pitch, Marine engineering

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