Abstract: The aerodynamic ramp was used to enhance mixing in supersonic combustion by forming two stream eddies.And the aerodynamic ramp was designed with injectors array.The schlieren and oil flow experiment of aerodynamic ramp were conducted on the straight united supersonic experimental equipment.The supersonic flow and combustion were simulated by the method of large eddy simulation(LES).The results show that the designed injectors array has the ability to accelerate the roll up course of streamwise vortices after the injection,which is beneficial for the mixing.And the combustion course enables the rise of the injection shear layer.Due to the smaller angle of injection,the ratio of total pressure loss of aerodynamic ramp is less than the physical ramp and transverse injection stream.