CFM56-3 Systems Training Manuals.1.CFM56-3 SYSTEMSTraining ManualRevisedApril 1990Prepared By CFM INTERNATIONALCUSTOMER TRAINING CENTEREvendale Technical Training SchoolGE Aircraft EnginesCincinnati, Ohio 45215.This publication is for TRAINING PURPOSES ONLY. The information is accurate atthe time of compilation; however, no update service will be furnished to maintainaccuracy. For authorized maintenance practices and specifications, consult thepertinent Maintenance Publications.The information (including technical data) contained in this document is theproperty of CFM International (General Electric Co. It is disclosed inconfidence and the technical data therein is exported under a U.S. Therefore, none of the information may be disclosed to other than therecipient.In addition, the technical data therein, and the direct product of the data, may not bediverted, transferred, re-exported or disclosed in any manner not provided for by thelicense without the prior written approval of both the U.S.
Engine Description General. The CFM56-3 is a high bypass, dual rotor, axial flow turbofan engine.Basic engine specification are provided in Fig 1 and 2. The integrated fan and booster (low pressure turbine-LPC) is driven by a4 stage low pressure turbine (LPT).
A single stage high pressure turbine (HPT)drives the 9 stage high pressure compressor (HPC). The two rotors are mechanically independent of each other. Air enteringthe engine are divided into a primary (inner) airstream and a secondary(outer) airstream (Fig3). After the primary airstream has been compressed bythe LPC and HPC, combustion of the fuel in the annular combustion chamberincreases the HPC discharge air velocity to drive the high and low pressureturbines. An accessory drive system off the N2 rotor drives engine andairplane accessory components.Engine Characteristics1. Trust Class for the CFM56-3B engine. Type of engine.Axial Flow, GasTurbine Turbofan3.
Cfm international CFM56-3 TRAINING MANUAL EFFECTIVITY CFMI PROPRIETARY INFORMATION Page 2 ALL 71-00-00 Oct 95 GROUND SAFETY PRECAUTIONS Overview (1.A.a) The operation of jet power plants is dangerous. While the engine operates, these dangerous conditions can occur: - There is a very strong suction at the front of the engine that can pull. Aug 20, 2016 CFM56-3 Systems Training Manuals 1. CFM56-3 SYSTEMS Training Manual Revised April 1990 Prepared By CFM INTERNATIONAL CUSTOMER TRAINING CENTER Evendale Technical Training School GE Aircraft Engines Cincinnati, Ohio 45215 2. This publication is for TRAINING PURPOSES ONLY.
Number and Type of Combustion Chamber.One / Annular4. Type of Compressor.Two spool,13 stagecompressor consisting of a 4 stage low pressure compressor (includes 1 stagefan) and a 9 stage high press compressor.5.
Direction of Rotation (Both Rotors).Clockwise (as viewedfrom the rear looking fwd)6. Type of Turbine.5 stage, split,consisting of a 1 stage high pressure turbine and a 4 stage low press.
Engine Weight (Bare weight).4290 pounds dry(approximate)(Eng. With QEC).5390 pounds (approximate)8.
Engine length (with flame arrestor)114.5 inches (approximate)Installed Engine Length (with inlet cowl). 192.6 inches (approximate)9. Engine diameterLargest diameter (without inlet cowl 87.6 inches (approximate) Incl.Accessory gearbox)Largest diameter (with inlet cowl) 88.4 inches (approximate)10. Ignition systemIgnition exciter and plug Two per engine.11.
Lubrication system.Oil type (Class B type 2 )Min.Eng.Oil Stating Temp -40C12. Fuel system (fuel specification).D1655- JET-A, -A1,-B, MIL-T-5624G JP-1,JP-4,JP-5, MIL-T-83133 JP-8Operating Requirements Engine deterioration is directly related to engine hot sectiontime/temperature (EGT) exposure. Rapid temperature transients are alsodetrimental to hot sections part life. Therefore, to obtain maximum engineservice life, time at takeoff / high thrust should be held to the practicalminimum, and rapid throttle movements avoided during normal flight operations. Ratings, Restrictions and Power ManagementTakeoff Rating-The Takeoff Rating is the certified rating or ratings definedin the regulatory agency Approved Airplane Flight Manual and is limited to 5minutes. The 5 minute limit applies to all operation above maximum continuousthrust.NOTE: The normal 5 minute takeoff time limit may be extended to 10 minutesfor engine-out contingency if authorized by the regulatory agency ApprovedAirplane Flight Manual in the country of registration of the specific airplane(airplane registration) involved.