一、CFM56发动机的结构特点天津航修厂从1991年开始维修B737—300型飞机。这是从“定时维修模式”到“以可靠性为中心维修模式”的转折点。B737—300型飞机的动力装置为CFM56—3发动机,该发动机是性能良好、低公害、便于维护、高函道比的涡轮风扇发动机,其耗油率低、运转费用低。CFM56在制造中采用了多种新技术、新材料,如采用抗裂纹的 First, the structural characteristics of the CFM56 engine Tianjin Hang Seng plant from 1991 to repair B737-300 aircraft. This is a turning point from the “regular maintenance mode” to “reliability-centered maintenance mode.” The power unit of the B737-300 aircraft is the CFM56-3 engine, which is a turbofan engine with good performance, low pollution, easy maintenance and high bypass ratio with low fuel consumption and low running costs. CFM56 in the manufacture of a variety of new technologies, new materials, such as the use of anti-crack