A double circular arc (DCA) cascade with 73° camber has been tested

and accordingto the test results its critical Mach number

optimum incidence

deviation angle

pressure distributions on airfoil surfaces

pressure losses and incidence angle range are analysed. This cascade is also compared with a supercritical airfoil cascade.The results indicate that the DCA cascades with such large camber still can achieve good aerodynamic performances(large turning

high velocity

low loss and wide incidence angle range)and coincide well with the general princples of DCA cascades provided that the cascade parameters are chosen correctly and distribution of passage area is reasonable.