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1、航空工程学院航空发动机综合课程设计题 目 Core Vibration Higher Than 7.3 Units核心机振动值高于7.3个单位作者姓名 赵冬福 专业名称 热能与动力工程 指导教师 尚永锋 提交日期 2011年 月 日答辩日期 2011年 月 日ABBREVIATIONSAPMARINC Processing ModuleANIAnalog InputBITEBuild In Test CMCCentralized Maintenance ComputerCFMICFM InternationalDMCDisplay management ComputerDIMDiscrete
2、Input Module ECUElectronic Control UnitEMIElectromagnetic InterferenceFMECA Failure Mode Effects and Criticality AnalysisFFCCVForward Flange Compressor Casing vibrationFADECFull Authority Digital Engine ControlGPMGeneral Processing ModuleLRULine Replaceable Unit MCDUMultifunction Control Display Uni
3、tPSMPower Supply Module RFIRadio Frequency InterferenceRCCRemote Charge ConverterSFCSpecific Fuel ConsumptionSPMSignal Processing Module中国民航飞行学院航空工程学院课程设计Table of contentsChapter 1 Overview of CFM56-5C11.1 General11.1.1 The CFM56-5C series11.1.2 The advantages of CFM56-5C21.2 The main modules of the
4、 engine21.2.1 Fan/Booster rotor21.2.2 Fan/Booster stator21.2.3 Fan frame31.2.4 Compressor rotor31.2.5 Compressor stator31.2.6 Combustor31.2.7 High pressure turbine41.2.8 Low pressure turbine4Chapter 2 Engine Interface and Vibration Monitoring System (EIVMS)42.1 General52.1.1 Description52.1.2 Operat
5、ion72.2 Component Location72.3 System Description82.3.1 engine vibration system82.3.2 Power Supply92.3.3 Interface92.4 Operation/Control and Indicating102.4.1 Engine Vibration Monitoring102.4.2 Engine Vibration Maintenance12Chapter 3 VIBRATION SENSORS133.1 General153.1.1 Component Location153.1.2 Sy
6、stem Description153.2 Component Description173.2.1 No.1 Bearing Vibration Sensor173.2.2 FFCC Vibration Sensor183.2.3 Remote Charge Converter (RCC)18Chapter 4 failure analyzing214.1 The related functional block diagram214.2 Analyzing the probable causes resulting224.3 Carrying out FMECA on the basis
7、of the causes224.4 Drawing the failure tree of the fault244.6 Troubleshooting flow chart244.7 Vibration monitoring and fault diagnosis method26Reference27III中国民航飞行学院航空工程学院课程设计Chapter 1 Overview of CFM56-5C1.1 GeneralThe CFM56-5C series engine is an axial flow, dual spool, high bypass ratio, turbo-fa
8、n engine with fan and multistage compression systems driven by reaction turbines. The engine is designed for use with a long duct, forced mixed flow exhaust system. The single stage fan and 4 stage booster is driven by a 5 stage low pressure turbine. A 9 stage, variable geometry, high pressure compr
9、essor is driven by an air cooled single stage turbine. A full annular combustor with 20 duplex fuel nozzles distributes the fuel to provide the heat energy to drive the turbines with residual energy providing thrust.The accessory drive system extracts energy from the high pressure rotor to drive the
10、 engine and engine-mounted aircraft accessories. Reverse thrust for braking the aircraft after landing is supplied by an integrated system which acts on the fan discharge airflow.1.1.1 The CFM56-5C series The principal operational differences between the CFM56-5C series engine models are summarized
11、below:Table 1-1 CFM56-5C seriesCFM56-5C231,200 lbs (13,878 daN)950CFM56-5C2/F31,200 lbs (13,878 daN)965CFM56-5C2/G31,200 lbs (13,878 daN)975CFM56-5C3/F32,500 lbs (14,456 daN)965CFM56-5C3/G32,500 lbs (14,456 daN)975CFM56-5C434,000 lbs (15,123 daN)9751.1.2 The advantages of CFM56-5CCharacteristics:1.
12、Lowest SFC of the CFM56 family.2. Quietest engine in its thrust class.3. High thrust-to-weight ratio to provide excellent takeoff performance for high-altitude and hot airfields.4.36,000 pounds of thrust demonstrated during ground testing.5. Second-generation FADEC.6. Long-duct, mixed-flow nacelle d
13、eveloped by CFM to provide significant noise attenuation, reduced fuel burn, and increased climb thrust.1.2 The main modules of the engineThe main modules of the engine are:-The fan-The fan and booster-The high pressure compressor-The combustor chamber-The low pressure turbine-The high pressure turb
14、ine-The accessory drive gearbox.1.2.1 Fan/Booster rotorThe fan rotor consists of one full diameter single stage fan and a smaller 4 stage booster for the core engine flow.The fan and the booster are mounted on a common internal concentric shaft driven by the 5 stage fan turbine. Two bearings support the fan assembly in the fan frame.1.2.2 Fan/Booster statorFixed stator vanes are provided for both the fan and the rotors. The fan casing, in which the fan stator is mounted, has provisions for blade containment f
