Design Method of the Axial-Flow Blade Row on Modified Isolated Aerofoil Theory with Interference Coefficient : Part 1, New Carpet Diagram and Its Application to the Machine

Abstract

Recently the blade row of axial flow machinery is designed using the two-dimensional cascade data, which depend on many experimental results. However, for the purpose to design a low pressure fan without the cascade data, the method using a modified isolated aerofoil theory with the interference coefficient method may be effective. But the reliable information about this analysis has been seldom published. The purposes of this paper are to provide the reliable information about the design method using the interference coefficient. New carpet diagrams for designing the axial blade are presented and they are compared with the experimental cascade data.