Zhang Jinsheng , Yuan Huacheng ,Wang Yunfei , Huang Guoping
DOI Number XXX-YYY-ZZZ
Conference Number HiSST 2018_700868
Design of a two-dimension variable inlet operating from Mach 0 to 4 was developed in this paper to meet the specific request. Numerical simulation was carried out to investigate the aerodynamic performance and variable geometric rules of the inlet. In addition, passive control methods were used to improve the performance. The result indicated that the initial inlet basically met the design request over a wide speed range expect Ma3 and Ma3.5.Using geometric modification and suction case could improve inlet performance. In this article, the total pressure recovery σe at Ma3 increased about 9% and distortion Δσ0 decreased 80% at Ma3.5.The thicker boundary layer on the sidewall layer is the reason for the low performance of the original configuration.