1. Measurement of Pressure Distribution on a Full Scale Propeller : Measurement on a Highly Skewed Propeller

概要

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In the previous paper, authors have developed a new technique to measure the pressure distribution around the blades of a full scale prope1ler. The full scale measurements were performed on the conventional propeller of a training ship "Seiun-Maru ". This paper describes the measurement of pressure distribution on a highly skewed propeller of the same ship. The measured pressure distributions were compared with the theoretical ones with using an estimated nominal full scale wake distribution. Excellent agreements with the theory were found at most of the measurement points, especially in the fore part of the blades. The measured pressure at 90 % radial position tended to decrease toward the trailing edge and completely differed from the theory. This suggested us the hydrodynamic load in the vicinity of the trailing edge at 90 % radial position was remarkably heavier than that predicted by the theory. This cyclic load might cause the break-off of the propeller tip due to rapid fatigue crack growth, if a propeller blade is damaged at the trailing edge.
社団法人日本船舶海洋工学会の論文