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建立了超声速环型引射器空气引射试验台,对高工况下环型引射器启动特性进行了试验研究。试验结果表明,环型引射器启动压强明显高于运行压强;试验发现,引射马赫数越高,混合室收缩比越大,引射器启动压强越高。
The air ejection test bench of supersonic annular ejector was established, and the start-up characteristics of the annular ejector under high working conditions were studied. The experimental results show that the starting pressure of the ring ejector is obviously higher than the operating pressure. It is found that the higher the ejecting Mach number, the larger the shrinkage ratio of the mixing chamber, the higher the ejector starting pressure.