超临界煤油超声速燃烧特性实验  

Experiments on supersonic combustion of supercritical kerosene

作　　者：范学军[1] 俞刚[1] 

机构地区：[1]中国科学院力学研究所,北京100080

出　　处：《推进技术》2006年第1期79-82,共4页Journal of Propulsion Technology

基　　金：国家自然基金重点基金资助项目(10232060)

摘　　要：针对各种温度、压力下，马赫数2．5流场中超临界煤油的超声速燃烧性能进行了实验研究。研制并测试了一个新型二级煤油加热系统，该系统能够把0．8kg的煤油在5．5MPa压力下加热至至950K而不产生严重的结碳。超声速燃烧试验表明，在相同的来流和燃料当量比条件下，超临界煤油的燃烧效率比室温煤油提高10％～15％，与氢气泡雾化的燃烧效率相当。Characteristics of supersonic combustion by injecting supercritical kerosene fuel into a Mach 2.5 crossflow at various preheat temperatures and pressures were investigated experimentally. A two-stage heating system has been designed and tested, which can prepare heated kerosene of 0.8 kg up to 950 K at pressure of 5.5 MPa with minimum/negligible fuel coking. Supersonic combustion tests under the similar stagnation conditions and kerosene equivalence ratios demonstrated that the combustion efficiency when using supercritical kerosene injection increased approximately 10% -20% over that using liquid kerosene injection, while it was comparable to that using effervescent atomization.

关 键 词：煤油 超音速燃烧 超临界态 二级加热器 

分 类 号：V511.1[航空宇航科学与技术—航空宇航推进理论与工程]