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| 含硼燃料在细管内点火燃烧特性的实验研究 |
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李和平1,王纵涛2,汪 洋3, 杨卫娟1, 敖 文1, 席剑飞1, 刘建忠1, 周俊虎1
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(1.浙江大学 能源清洁利用国家重点实验室, 浙江 杭州 310027;2.中国航天科技集团公司第四研究院第四十一所,陕西 西安 710000;3.浙江大学 先进技术研究院, 浙江 杭州 310027)
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| 摘要: |
| 为了获得适用于微推进器的含硼燃料的改进配方,利用热重分析实验台、激光点火实验台和电感耦合等离子体发射光谱仪,进行了氧/燃比和草酸对含硼燃料在微小圆管中火焰形貌、点火延迟时间、燃烧时间、燃烧剧烈程度、燃速和燃烧效率等点火燃烧性能的影响研究。实验结果显示:无草酸的样品,氧/燃比越大,硼的点火延迟时间越小,燃尽率越高；但燃速和燃烧剧烈程度越小。添加草酸后,硼的点火性能和燃尽率明显提高,比添加草酸前的点火延迟时间减小了545~595ms,燃尽率增大了31.41%~32.67%。 |
| 关键词: 微推进器 含硼燃料 草酸 点火燃烧性能 燃尽率 |
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| 基金项目:国家自然科学基金资助(51106135)；中国博士后科学基金(20110491769)；浙江省自然科学基金资助(LY12E06006)；中央高校基本科研业务费专项资金资助(2012FZA4014)。 |
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| Experimental Research on Ignition and Combustion Properties of Boron-containing Fuels in Mini-tubes |
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LI He-ping1, WANG Zong-tao2 ,WANG Yang3, YANG Wei-juan1,AO Wen1,XI Jian-fei1,LIU Jian-zhong1,ZHOU Jun-hu1
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(1.State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China;2.The 41st Institute of the Fourth Academy of CASC,Xi′an 710000,China;3.Insititutes of Advanced Technology, Zhejiang University, Hangzhou 310027, China)
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| Abstract: |
| In order to obtain improved formulations of boron-containing fuels suitable for micro-thrusters, the effects of oxygen-fuel ratio and oxalic acid on ignition and combustion characteristics were studied using the thermogravimetry, the laser ignition test-bed and the iCAP-6300emission spectrometer. The properties include flame appearance, ignition delay time, combustion time, combustion intensity, burning-rate and combustion efficiency etc. The results show that ignition delay time for samples without oxalic acid is shortened and burn-out rate increases with the increase of oxygen-fuel ratio. Meanwhile, burning-rate and combustion intensity are weakened. Nevertheless, after adding oxalic acid, ignition performance and burning efficiency improve significantly. To be specific, the descending value of ignition delay time range is from 545ms to 595ms, and the increasing value range of burn-out rate is from 31.41% to 32.67%,comparing to that of fules without oxalic acid. |
| Key words: Micro-thruster Boron-containing fuel Oxalic acid Ignition and combustion characteristics Burn-out rate |
