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上海交通大学振动冲击噪声研究所傅志方教授、化德纯副教授等同中国民航103厂合作完成的“AN-21发动机振动故障研究”项目获得了国家级科技进步一等奖(1988年度).航空维修是技术密集的科学,对保证飞行完全意义重大,航空产品价格昂贵,维修费用更高。据统计15年内的维修费为购机的9倍以上。而发动是飞机的心脏,飞行事故约有1/3起因于发动机故障,而振动又是飞机发动机第一位故障。振动故障表现形式多种多样,变化无常,影响因素错综复杂,研究难度极高。他们应用数字谱分析、时序建模、摸态分析、
The project of “AN-21 Engine Vibration Failure”, which was jointly accomplished by Prof. Fu Zhifang and Prof. Hua Dechun, was jointly awarded by China Civil Aviation 103 Factory and won the first prize of National Science and Technology Progress (Year 1988) by Aviation Research Institute of Vibration and Impact Noise of Shanghai Jiaotong University. Is a technology-intensive science that is totally relevant to ensuring flight, expensive aviation products and higher maintenance costs. According to statistics, maintenance costs within 15 years for the purchase of more than 9 times. The launch is the heart of the aircraft, about 1/3 of the flight accident due to engine failure, and vibration is the first aircraft engine failure. Vibration failure manifestation of a variety of erratic, variable factors, the study is extremely difficult. They applied digital spectrum analysis, timing modeling, modal analysis,