Two basic characteristics (pressure fluctuation in inlet and shock system variation at the inlet entry) have been investigated through analysis of the regulating rule of adjustable ramp inlet and with the combination of flight test data and CFD results. Thus the cause of abnormal inlet noise happened during flight is further analyzed. An optimum method for adjusting ramp inlet has been raised. This investigation method has some engineering application value for flight test of the same type of inlets.%通过分析可调斜板式进气道的调节规律,结合飞行试验数据和CFD三维流场仿真,研究了板位突变条件下的两个基本特性——进气道内流压力脉动、进气道入口激波系变化.进而分析了空中飞行时进气道异常响声的原因,提出可调斜板式进气道调节的优化方法,该特性研究方法对同类进气道试飞具有一定的工程应用价值.
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