摘要
为研究多子级并联的液体运载火箭推进剂交叉输送系统在发动机故障工况下的工作特性,验证交叉输送技术解决故障子级的推进剂剩余问题的效果,采用仿真分析与试验验证结合的方法,研究了2种典型的发动机故障工况。结果表明:建立的交叉输送系统仿真模型能够较好地模拟系统的真实状态,拓展了交叉输送技术研究途径;采用交叉增压方案的交叉输送系统能够较好地应对典型发动机故障工况,通过将故障助推器的剩余推进剂输送给其他子级的发动机使用,保持了不同助推器总消耗量基本一致,解决了发动机异常关机导致的推进剂剩余问题。
Propellant cross-feed technology is an important solution to the propellant surplus caused by abnormal engine shut down,which contributes to the engine-out capability of a launch vehicle.To understand the operation characteristics of the propellant cross-feed system with abnormal engine shutdown and to verify the performance of the propellant cross-feed technology,two typical engine failure conditions were studied through simulation analysis and experimental verification.The results showed that the established simulation model was credible which expanded the research approaches for cross-feed technology.In fact,propellant cross-feed system with cross-pressurization could eliminate the propellant surplus caused by abnormal engine shutdown in multiple engine failure conditions,because the propellant in blooey booster could be transported to the core stage to insure the same consumption of propellant in both boosters.
作者
熊天赐
容易
黄辉
陈士强
XIONG Tianci;RONG Yi;HUANG Hui;CHEN Shiqiang(Beijing Institute of Astronautical System Engineering,Beijing 100076,China)
出处
《载人航天》
CSCD
北大核心
2020年第1期100-106,共7页
Manned Spaceflight
