Based upon the study on LOX/LCH4 rocket engine of foreign countries and the technology of China's first LOX/LH2 expander cycle engine, the demonstration test of LOX/LCH4 engine is conducted. With the test result and relevant knowledge of cryogenic engine technology, the system scheme and key technology of LOX/LCH4 expander cycle engine whose thrust is 8t is proposed.%通过研究国外液氧/甲烷发动机技术的发展和现状,在中国首台氢氧膨胀循环发动机技术基础上,进行换甲烷推进剂的演示试验,结合试验结果及低温发动机研制基础,提出8吨级甲烷膨胀循环发动机的系统方案及关键技术.
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