| Citation: | TANG Xiao, FAN Xiaoqiang, XIONG Bing, et al. Experimental research on establishment of dual-separation unstart structure in hypersonic inlet[J]. Journal of Aerospace Power, 2025, 40（10）：20240029 doi: 10.13224/j.cnki.jasp.20240029
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In order to clarify the establishment process of the internal separations for the unstart mode of dual-separation on both body and lip (DSBL), and reveal the prerequisite conditions for forming this unstart mode, two transient processes (increasing the angle of attack and blocking and then releasing downstream channel) for inducing DSBL were studied experimentally. The results were as follows: 1) for the two processes, the first induced separations were all located on the body side, and then large-scale separated flow appeared on the lip side; 2) the ability to maintain the start state of the inlet was not related to DSBL flow mode, but rather depended on choking of the throat; 3) DSBL was induced only when there were separations on the body-side, and the generated separation shock impacted to a specific range of the compression surface of the lip.
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