| 引用本文: | 余勇,丁猛,刘卫东,等.煤油超音速燃烧的试验研究.[J].国防科技大学学报,2004,26(1):1-4.[点击复制] |
| YU Yong,DING Meng,LIU Weidong,et al.Experimental Study of Supersonic Combustion of Kerosene[J].Journal of National University of Defense Technology,2004,26(1):1-4[点击复制] |
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| 煤油超音速燃烧的试验研究 |
| 余勇, 丁猛, 刘卫东, 梁剑寒, 沈赤兵, 周进, 王振国 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 在地面直连式试车台上，研究了煤油碳氢燃料超燃冲压发动机的点火燃烧性能。通过测量模型发动机壁面压力分布，比较了不同工况下的煤油点火燃烧性能。试验结果表明，在当量比为0.27～1.46的大范围内，煤油在超燃冲压模型发动机中能够成功点火，支板和凹腔对煤油在超声速气流中的点火及稳定燃烧有重要作用，少量氢气的喷入对煤油的点火燃烧有良好的促进作用。太厚的支板、过高的当量比、模型发动机第一级燃烧室加入燃料过多会使发动机壅塞，影响隔离段的正常工作，进而影响加热器喷管工作。 |
| 关键词: 超燃冲压模型发动机 碳氢燃料 直连式试验 超音速燃烧 |
| DOI： |
| 投稿日期：2003-08-25 |
| 基金项目:国家863基金资助项目(2002AA723060) |
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| Experimental Study of Supersonic Combustion of Kerosene |
| YU Yong, DING Meng, LIU Weidong, LIANG Jianhan, SHEN Chibing, ZHOU Jin, WANG Zhenguo |
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(College of Aerospace and Materials Engineering，National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Research on the ignition and combustion performance of kerosene in a direct-connected scramjet model was conducted. Successful ignition and sustain combustion were achieved in the supersonic combustor. The distribution of wall pressure was measured to validate the combustion performances under different conditions. The test results indicate that kerosene fuel can be self-ignited when the equivalent fuel-air ratio varies from 0.27 to 1.46. The strut and cavity structure are important for the ignition and stable supersonic combustion of kerosene in the model scramjet. When a little hydrogen was injected with kerosene, the ignition and combustion performance was greatly improved. Too thick strut, too high equivalent fuel/air ratio, too much kerosene injected into the first combustor can make the combustor choke, consequently, affect the work of the isolator and air-heater nozzle. |
| Keywords: scramjet model hydrogen-carbon fuel direct-connect test supersonic combustion |
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