航空学报2025，Vol.46Issue(18)：50-63,14.DOI:10.7527/S1000-6893.2025.31788
双燃烧室冲压发动机对硼基推进剂的促燃效果
Combustion enhancement effect of dual combustor ramjet engines on boron-based propellants
摘要
Abstract
To investigate the combustion enhancement effect of the Dual Combustor Ramjet engine(DCR)configura-tion on boron-based propellants and its contribution to engine performance,the scramjet engine(SCR)was selected for comparison.The results indicate that,compared to SCR,the DCR effectively promotes the combustion of boron-based propellants under the conditions of Ma=5 at 28 km height(Case 1)and Ma=6 at 30 km height(Case 2),ben-efiting from the high-temperature and high-pressure environment of the subsonic combustor,while maintaining rela-tively low total pressure loss and better engine performance.In Case 1,the combustion efficiency of DCR is higher than that of SCR by 26.6%,27.2%,and 23.8%for engine lengths of 1.5 m,2 m,and 2.5 m,respectively,with specific impulses of 1 964 m/s,1 970 m/s,and 1 406 m/s.In Case 2,DCR shows combustion efficiencies higher than SCR by 27.9%,22.3%,and 22.9%,with specific impulses of 1 615 m/s,1 393 m/s,and 960 m/s,respec-tively.The shorter the engine length,the more pronounced the performance advantage of DCR over SCR,indicating that DCR is preferable in space-constrained application scenarios.关键词
双燃烧室冲压发动机/超燃冲压发动机/硼基推进剂/燃烧效率/比冲Key words
dual combustor ramjet/scramjet/boron-based propellant/combustion efficiency/specific impulse分类
航空航天引用本文复制引用
吴宪举,魏志军,王云辉,周凌,冯滢..双燃烧室冲压发动机对硼基推进剂的促燃效果[J].航空学报,2025,46(18):50-63,14.基金项目
国家自然科学基金(U21B2086) National Natural Science Foundation of China(U21B2086) （U21B2086）
