Investigations made at the NACA Lewis Flight Propulsion Laboratory (now the NASA Lewis Research Center) on secondary-flow phenomena in stator and rotor-blade rows are interpreted, with the aid of low-speed flow visualization experiments, in order to establish sources and patterns of secondary flows there. Two stator configurations were designed to modify the stator-exit loss patterns and were investigated in conjunction with a transonic rotor to determine the effect on overall turbine performance of either reducing or eliminating stator-blade wakes and secondary-flow loss accumulations.

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