Changes of sidewall sweep Angle and cowl position can influence inlet performance such as mass capture, total pressure recovery coefficient and uniformity of isolator exit flow field.

And three-dimensional sidewall compression inlet with 25 percent cowl position has high mass capture and total pressure recovery coefficient and isolator exit flow flied is homogeneous.

The numerical results show that with the adaptive passive control, the separation bubble length was reduced to 45% of its original length, and the low total pressure recovery coefficient was improved.