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The theory of propellers I : determination of the circulation function and the mass coefficient for dual-rotating propellers

Theodore Theodorsen

Abstract

Values of the circulation function have been obtained for dual-rotating propellers. Numerical values are given for four, eight, and twelve-blade dual-rotating propellers and for advance ratios from 2 to about 6. In addition, the circulation function has been determine for single-rotating propellers for the higher values of the advance ratio. The mass coefficient, another quantity of significance in propeller theory, has been introduced.

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Key concepts: Propeller, Circulation (fluid dynamics), Dual (grammatical number), Function (biology), Mechanics, Physics, Engineering, Mathematics