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一、导言未来航天运输系统(地球低轨道)的分系统必须是可多次使用的,应尽量避免事故维修和例行检验,力图减少组件更换,增如发动机服役寿命。因此,美国为了探讨减少火箭发动机维修而开展了一系列发动机工况监控技术方面的研究工作。其中洛克达因公司的工作尤为突出。该公司将三十年来七种泵压式液体火箭发动机研制过程中的故障情况进行了统计。他们从交付的2500台进行过1000次飞行的发动机中统计出85000次故障,对这些故障记录进行评定、筛选、归类,将其缩减到1771次故障,并将其归结为十六种故障模式,并附以故障传播图表示。这十六种故障模式及故障传播图对所有泵压式发动机的故障分析及预测都是有用的。
I. INTRODUCTION In the future, the subsystem of the space transportation system (the Earth’s low orbit) must be reusable. The accident maintenance and routine inspection should be avoided in an attempt to reduce component replacement and increase the service life of the engine. Therefore, the United States carried out a series of research work on engine condition monitoring technology in order to explore ways to reduce rocket engine maintenance. Which Locke because of the company’s work is particularly prominent. The company made statistics on the fault conditions in the development of seven pump-type liquid propellant rocket engines in thirty years. They counted 85,000 failures from 2,500 engines delivered over 2,500 flights, rated them, screened them, classified them, reduced them to 1,771 faults and reduced them to sixteen failure modes , Accompanied by fault propagation diagram. The sixteen failure modes and failure propagation diagrams are useful for all pump failure analysis and prediction.