| CFM56—7B型发动机衰退模型建立与研究 |
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| 引用本文： | 曹惠玲,林达锦,曾学锋.CFM56—7B型发动机衰退模型建立与研究[J].中国民航学院学报,2010,28(4):9-12. |
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| 作者姓名： | 曹惠玲 林达锦 曾学锋 |
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| 作者单位： | [1]中国民航大学航空工程学院,天津300300 [2]交通部东海第一救助飞行队,上海200137 [3]北京飞机维修工程有限公司,北京100600 |
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| 基金项目： | 中国民航大学科研基金项目 |
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| 摘 要： | 发动机从投入使用到返厂大修整体性能衰退是一个连续性过程．研究目的在于建立能精确反映该过程的模型。收集大量CFM56—7B型发动机数据，通过解码、修正、换算得到大量的发动机排气温度裕度数据点．分段拟合并比较得到最优的该型发动机衰退数学模型，并运用另一机队数据验证模型。验证表明模型能较好地反映该型发动机衰退规律，给系统工程师分析该型发动机提供了指导依据，对研究该型发动机的性能衰退过程具有实用和理论指导意义。
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| 关 键 词： | CFM56-7B型发动机 性能分析 非线性回归 QAR数据 发动机排气温度裕度 |
Declining Formula Establish and Analysis of CFM56-7B Aero-Engine |
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| CAO Hui-ling,LIN Da-jin,ZENG Xue-feng.Declining Formula Establish and Analysis of CFM56-7B Aero-Engine[J].Journal of Civil Aviation University of China,2010,28(4):9-12. |
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| Authors: | CAO Hui-ling LIN Da-jin ZENG Xue-feng |
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| Institution: | 基金项目：中国民航大学科研基金项目(08CAUC-E01) |
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| Abstract: | The engine performance decline process can be regard as a continuous course between installation and removal. This dissertation calculated the converted EGTM data of CFM56-TB from 36 engines fleet. Collecting and decoding enough QAR data of CFM56-7B, modifying the take-off exhaust gas temperatnre（EGT） to sea level, and then taking the general standards of engine performance analysis into consideration, which are using exhaust gas temperature margin（EGTM）as .the indication of an on wing engine declining situation. In order to get declining formula of this fleet, the method of non-line regression is used to disposal EGTM data. According to the validation, declining formula can reflect the performance declining principle of CFM56-7B engine quite well. |
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| Keywords: | CFM56-7B model engine performance analysis non-line regression QAR data EGTM |
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