1970-02-01

Marine Propeller Selection 700094

In spite of the apparent simplicity of marine propellers, their selection for small craft is complicated because of the possible interactions of numerous pertinent variables. It is not the intent of this paper to discuss propeller design, but rather to present procedures for selecting the most efficient propeller commercially available. A secondary objective is to point out the importance of gear reduction and its effect on propeller efficiency. To achieve these objectives, this paper will discuss those variables which must be considered in determining propeller dimensions and the modifications of these dimensions necessary for satisfactory performance under cavitating conditions.

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