Aerodynamic Loss Characteristics of LP Turbine Cascades for Aero-Engines with High Bypass Ratio

This study deals with detailed experimental and numerical investigations on aerodynamic loss of linear cascades composed of several types of low-pressure turbine airfoils developed by use of different design concepts. Important aerodynamic indices of the cascade are Zweifel factor, flow deceleration rate over the suction surface and velocity ratio. A wind-tunnel equipped with wake-generator is used to measure the cascade loss under the influence of incoming wakes.