Blowing experiments have been completed on 21 kinds of reversed tandem cascades with different geometrical parameters. The cascades were designed by the aid of a computer program with reference to the configurations of the tandem cascades of Turmo-IIIc

J69 and J85 compressor stators. The main flow performances were obtained in the form of a group of curves. Three conclusions are drawn as follows. l.The turning angle of the reversed tandem cascade is larger than that of a single blade cascade

while the pressure loss coefficient is smaller. 2.The reversed cascades still possess a better performance even if the incident angle is about -13°. Therefore

they can be suitable for application under conditions of minus incident angles. 3. The relative displacement and the relative axial distance of reversed tandem cascades should be matched well.