用Ma =5 3的风洞实验和数值模拟研究了高超三维侧压式进气道后的隔离段流动特性。隔离段的长高比为 8。实验结果表明 ,位于进气道喉道的隔离段入口气流参数沿高度有极大变化 ,造成隔离段内上下的流态显著不同。研究发现 ,隔离段进出口最大允许压比与正激波压比基本相同。用Waltrup的经验公式作等直隔离段初步设计是合适的 The wind tunnel experiment with Ma = 53 and the numerical simulation were performed to study the flow behavior of the isolated section after the super three-dimensional side-pressure inlet. The length of the isolation section is 8. The experimental results show that the airflow parameters at the entrance of the inlet section of the throat of the inlet pipe vary greatly along the height, resulting in significant differences in the flow regimes between the top and bottom of the isolation section. The study found that the maximum allowable pressure ratio of inlet and outlet isolation section is almost the same as the normalized pressure wave ratio. It is appropriate to use Waltrup’s empirical formula for the initial design of straight isolating sections