水反应金属燃料发动机比冲性能与燃烧室长度设计理论研究  

Theoretical research on specific impulse performance and chamber length of hydroreactive metal fuel motor

作　　者：胡凡[1] 张为华 夏智勋[1] 缪万波[1] 李芳[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《固体火箭技术》2007年第1期12-16,共5页Journal of Solid Rocket Technology

基　　金：自然科学基金(50376071)

摘　　要：运用热力计算原理,计算并分析了两相流影响条件下水反应金属燃料发动机的比冲性能。采用经验公式,对发动机中金属颗粒燃烧时间进行了计算分析,估算了金属颗粒燃烧长度,为燃烧室长度设计提供了依据。结果表明,存在最佳水燃比,使发动机达到最优比冲性能;两相流影响下比冲损失较大,金属颗粒燃烧时间随水燃比、雷诺数增加而显著减少;通过对颗粒燃烧时间的计算,可初步设计燃烧室长度。The specific impulse of hydroreactive metal fuel motor influenced by two-phase flow was calculated and analyzed by using the principle of thermodynamic calculation. Burning time of metal particles in motor was calculated and analyzed by using empirical equation ,and burning length of metal particles was estimated,which can provide reference for the design of chamber length. The results show that hydroreactive metal fuel motors with the optimum water/fuel ratio possess the best specific impulse performmace, and the specific impulse loses much under the influence of two-phase flow. Also burning time of metal particles decreases dramatically with the increase of water/fuel ratio and Re, and the chamber length can be primarily designed by calculating burning time of metal particles.

关 键 词：水反应金属燃料发动机 比冲性能 金属颗粒燃烧时间 燃烧室长度 

分 类 号：V430[航空宇航科学与技术—航空宇航推进理论与工程]