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一、引言空间技术的开发使人类的经济文化生活发生了深刻变化,而航天飞机的问世又大大推动了空间技术的高速发展。航天飞机上共有三台主发动机(SSME),它们是以液氢、液氧为燃料的高性能火箭发动机,是航天飞机的动力系统。SSME 采用了先进的分级燃烧、高压补燃技术,先将总推进剂流量的20%在预燃室在高压、低温下进行不完全燃烧,产生的燃气驱动涡轮后再进入主燃烧室,在高温、高压下进
I. INTRODUCTION The development of space technology has brought profound changes to the economic and cultural life of mankind. The advent of space shuttle has greatly promoted the rapid development of space technology. Space Shuttle has a total of three main engines (SSME), which is liquid hydrogen, liquid oxygen-powered high-performance rocket engine is the space shuttle’s power system. SSME uses advanced staged combustion and high-pressure make-up combustion technology. Firstly, 20% of the total propellant flow is incompletely burned in the pre-combustion chamber at high pressure and low temperature. The produced gas drives the turbine and then enters the main combustion chamber. At high temperature , High pressure forward