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在Ma=3.85的风洞中,对一个设计Ma=6起动Ma=2.5的侧压式进气道完成了攻角从0°→8°→0°的连续吹风实验.实验结果表明:0°攻角时进气道顺利起动,当攻角增大到5.7°时,进气道出现不起动;之后在8°到0°的变化过程中,在5.4°时又恢复了起动.另外,随着攻角的增加,流量系数在起动状态下缓慢减小,在不起动状态下急剧减小.实验中还进行了攻角0°→4°→0°的动态连续吹风实验,进气道全程都处于起动状态.
In the wind tunnel with Ma = 3.85, a side-blow inlet with Ma = 6 starting Ma = 2.5 was designed to complete the continuous blowing experiment with angle of attack from 0 ° → 8 ° → 0 °. The experimental results show that 0 ° When the angle of attack is smooth, the air intake starts smoothly. When the angle of attack increases to 5.7 °, the air intake does not start, and then restarts at 5.4 ° during the change from 8 ° to 0 °. In addition, With the increase of the angle of attack, the flow coefficient decreases slowly in the starting state and decreases sharply in the non-starting state.The dynamic continuous blowing experiment with angle of attack 0 ° → 4 ° → 0 ° is also carried out in the experiment, Are in the starting state.