推進器翼の強度に就て

概要

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The strength of propeller-blade has already been discussed in detail by Taylor in his "Speed and Power of Ships." But his treatment is based on the assumption of a straight-line law of thrust distribution along the radius. Schoenherr has shown later how to apply the aerodynamical theory to the calculation of propeller-blade strength, which is more rational than Taylor's, but it requires some tedious calculations. The Authors have constructed an approximate formulae based on the aerodynamic theory for estimating the strength of propeller-blade, substituting the thrust-distribution curve by a suitably chosen algebraic curve. The maximum-thickness distribution which is required in order to make the stress uniform along the radius has also been estimated, and it is found that for this purpose the thickness-curve must be nearly straight but with slight concavity, for propellers of usual proportion.
社団法人日本船舶海洋工学会の論文
1941-02-25