NASA Technical Reports Server (NTRS) 19930091455: Analysis of W. F. Durand's and E. P. Lesley's propeller tests
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This edition is associated with NASA Technical Reports Server (NTRS) and a publication year of 1924.
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NASA Technical Reports Server (NTRS) 19930091455: Analysis of W. F. Durand's and E. P. Lesley's propeller tests
Author: NASA Technical Reports Server (NTRS)
Year: 1924
This report is a critical study of the results of propeller model tests with the view of obtaining a clear insight into the mechanism of the propeller action and of examining the soundness of the physical explanation generally given. The nominal slip-stream velocity is plotted against the propeller tip velocity, both measured by the velocity of flight as a unit. Within the range corresponding to conditions of flight, the curve thus obtained is a straight line. Its inclination depends chiefly on the effective blade width, its position on the effective pitch. These two quantities can therefore be determined from the result of each propeller test. Both can easily be estimated therefrom for new propellers of similar type. Thus, a simple method for the computation of propellers suggests itself.
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