Researches on the Two-Dimensional Retarded Cascade : Part 4,Determination of Blade Elements at Retarded Blade Row

概要

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It is well known that the experimental, two-dimensional cascade date are far more available than the theoretical calculations to work out a reliable design of blade rows of the axial flow compressor. In this paper, three kinds of design diagrams for the NACA 65 series compressor blade section have been presented, based on the available exprerimental cascade data. First, the improved carpet plotting diagrams have been prepared corresponding to the optimum design angle of attack which is obtained semi-theoretically. Next, introducing the "angle-of-attack selecting factor", another type of design diagrams has been prepared, by which one may select the suitable angle of attack in the effective operating range. The effects of the factor on the fan characteristics have been investigated experimentally. Lastly, defining the "inlet angle selecting factor", the other convenient diagrams have been composed, with which it is possible to estimate a performance of the cascade as well as to select the blade row elements.
一般社団法人日本機械学会の論文