Numerical simulation of S-shaped inlet under the intake total pressure distortion

During the development of stealth fighter, S-shaped inlet enters designer’s vision because it has better than bump and straight inlet. use inlet, due to its structural reasons, secondary flow is likely occur in curved section, which directly causes state be changeable complicated. Therefore, this paper takes as research object analyzes steady field simulation under uniform condition distortion analyze airflow total pressure each section by changing intake conditions with CFX software. The results show that although will intake. However, when work certain flight conditions, level smaller condition, can improve air performance. Finally, inferred port, deterioration may prevented specific conditions.