关键词: 液体推进剂火箭发动机;发动机故障;故障检测;故障分析

Abstract: Some failure modes that frequently happen to the engine are presented based on thedevelopment history of four turbopumpfed rocket engines, and not only failure happening andspreading are described, but also causes and consequences of failure are preliminarily analyzed. Failuremodes of turbopump and pipeline are primarily discussed, some typical examples that pipeline damagesoccurred in engine hot-firing tests are given as well, and failure modes of valve and chamber and cableand fiexible hose assembly are intreduced. deme suggestions are put forward for new engine designingand failure detecting’ Finally, it is pointed out that fault detection system’f0r manned flights isnecessary’

Key words: Liquid propellant rocket engine;Engine failure;Fault detecti0n;Failure analysis