N_2O_4真空排放试验研究  

Sluicing procedure investigation of N_2O_4 in vacuum

作　　者：刘昌波[1] 张涛[1] 李福云[1] 

机构地区：[1]西安航天动力研究所,陕西西安710100

出　　处：《火箭推进》2006年第6期1-5,共5页Journal of Rocket Propulsion

摘　　要：真空状态对高空液体火箭发动机的工作过程具有重要影响,研究液体火箭发动机高空点火、真空排放等过程时,必须对所采用的推进剂在真空状态与地面状态下的差别进行仔细研究。本文以某型高空发动机的真空排放过程为研究对象,根据排放管路中流速相等和流动时间相等的原则,设计了缩尺试验件,对N_2O_4真空排放过程进行了试验研究。结果表明,N_2O_4真空排放流量的轻微减少对发动机实际排放效果影响很小。Vacuum inviroument has great effect on operation procecedure of a liquid rocket engine. So when investigate the ignition in high altitude, much more attention should be paid on sluicing procedure in vacuum, differences of propellant properties at sea level or in high altitude. According to the sluicing procedure of a certain high altitude engine, based on the nile of the equivalence of flow velocity and flow time, a subscale system is designed to investigate the sluicing procedure of N2O4. The results show that a little decrease of N2O4 slucing flux in vaccum has slight effect on slucing procedure.

关 键 词：液体火箭发动机 N2O4 真空排放 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]