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为了研究横流喷嘴的雾化效果以及对发动机推力的影响,采用互击式直流喷嘴、逆向式直流喷嘴和水平式直流喷嘴进行了冷流试验.研究了不同试验工况下喷管出口喷雾场雾滴的索太尔平均直径与发动机的推力特性.研究结果表明:随着压比的增加,雾滴直径减小;相同的压比下,雾滴直径最小的喷射方案为喉扩喷射,雾化质量最好的喷嘴为互击式直流喷嘴;同时在喉扩喷射方案下,3种喷嘴的扼喉能力与推力比随着流量比的增加而提高.
In order to study the atomization effect of the cross-flow nozzle and the influence on the thrust of the engine, a cold flow test was carried out by using the reciprocating direct current nozzle, the reverse direct current nozzle and the horizontal direct current nozzle. Drop of the Stencil average diameter and the thrust characteristics of the engine.The results show that: with the pressure ratio increases, the droplet diameter decreases; the same pressure ratio, the droplet diameter of the smallest jet injection laryngeal jets, atomization The best quality nozzle is the intercalating direct current nozzle. Meanwhile, under the laryngeal expansion jetting scheme, the throat capacity and thrust ratio of the three kinds of nozzles increase with the increase of the flow rate.