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AE 60022AE 40030ADVANCED GAS TURBINE THEORYDr. Chetan S. Mistry
Lecture-1ADVANCED GAS TURBINE THEORY
AE 60022 / AE 40030 ADVANCED GAS TURBINE THEORY1.2.3.4.5.6.7.General propulsion systems,Theory of intakes and exhaust systems,thrust reversers,Jet engine noise and methods of noisereduction,Cycle analysis of one and two spoolengines,Equilibrium running of gas turbine engines,Design and off-design performance,Component matching, Transient behaviour,Design consideration of axial flowmultistage machines, stream line curvaturemethod, radial equilibrium equation1.2.3.4.5.6.7.8.Introduction to Jet Propulsion systemsTypes of aircraft enginesJet engine Thermal Cycle analysisTwo spool and Three spool configurationsEngine Installation & Theory of IntakesExhaust nozzlesAfter burners and Thrust reverserDesign considerations for axial flowturbomachines9. Design and off-design performance10.Component matchingDr. Chetan S. Mistry
Course Pre-requisitesIntroduction to Aerospace Propulsion,orA course in Engineering ThermodynamicsAdditionally :A course in Fluid Mechanics and Gas dynamicswould be helpfulDr. Chetan S. Mistry
Work Ethics DO participate and ask questions. For order in class, raise your hand whenasking a question. BRING all specified ENGINEERING equipment like Notebook, Calculator,Gas table. HAND IN all Assignments ON TIME! Failure to do so may result inconsequences YOU KNOW. SHOW CARE and concern for each other. Help one another in homework.BUT NO COPYING OF ENTIRE ASSIGNMENTS! Design projects--- Group work IF you are LATE in class Do not take permission . Take your seat withoutdisturbing whole class. Attendance---- Be Physically and Mentally present.Dr. Chetan S. Mistry
Dr. Chetan S. Mistry
Course EvaluationExamination eCodeAE60022Course NameADVANCED GASAE 40030 TURBINE THEORYHours /WeekLTP3‐0CSEE MS ESAtt.330.20 0.30 0.50Dr. Chetan S. Mistry
Weekly -3 Lectures1.2.3.4.5.6.7.8.Introduction to Propulsion systemsTypes of aircraft enginesJet engine Thermal Cycle analysisTwo spool and Three spool configurationsEngine Installation &Theory of IntakesExhaust nozzlesAfter burners and Thrust reverserDesign considerations for axial flowturbomachines9. Design and off-design performance10.Component matching4 Lectures7 Lectures8 Lectures8 Lectures6 Lectures7 LecturesDr. Chetan S. Mistry
Text/References0.1.2.3.4.5.6.7.8.9.Class notes / Lecture notesSaravanamuttoo, H.I.H., Rogers G.F.C., Cohen H.; Gas Turbine Theory, 2001, PearsonEl-Sayed Ahmed, Aircraft Propulsion and gas Turbine Engines , 2008, T&F,CRC press.Saeed Farokhi, Aircraft Propulsion, 2009, John Wiley & Sons, Inc.Kaluse Hunecke , Jet Engines-Fundamentals of theory, design and Operation, Motor booksInternationalHill Philip, Peterson Carl, Mechanics and Thermodynamics of Propulsion, 1992, AddisonWeslyMattingly J D , Elements of Propulsion – Gas Turbines and Rockets, 2006, AIAA Educationseries.Mattingly J D , Aircraft engine design, 2006, AIAA Education series.Gordon C. Oates, Aircraft Propulsion Systems Technology and Design, 1989, AIAAEducation series.Roy Bhaskar, Aircraft Propulsion, 2008, Elsevier (India)Dr. Chetan S. Mistry
Aerospace EnginesNon-Air breathingEnginesAir Jet propulsionenginesPulsejetGas turbineorJet engineTurbo ramjetTurbo rocketDr. Chetan S. Mistry
Jet EnginesTurbojetNon A/BTurbopropWith A/BTurboshaftPropeller/ RotorOn opfanSinglepropeller fanDucted fanEngineCounter rotatingpropeller fanPropeller/ RotorDriven by freeTurbineNextSlideDr. Chetan S. Mistry
Turbofan EnginesAft fanForward fanMixed flowNon A/BUnmixed flowHigh BypassratioLow BypassratioNon afterburningWith A/BAdvancedducted fanAfterburningSingle spoolGeared fanTwo spoolThree spoolUngeared fanDr. Chetan S. Mistry
Evolution of aero engines.Dr. Chetan S. Mistry
Lecture-2ADVANCED GAS TURBINE THEORY
Turbojet EngineAfter burnerWith AfterburnerWithout AfterburnerAxial flowcompressorNumber of spoolsSingle spoolCentrifugalcompressorTwo spoolAxial-CentrifugalcompressorDr. Chetan S. Mistry
CCTurbineCompressorDiffuserSingle spool Turbojet EngineJ85‐GE‐17A turbojet engine from General Electric (1970)NozzleDr. Chetan S. Mistry
Dr. Chetan S. Mistry
Single spool Turbojet EngineWestinghouse J34Dr. Chetan S. Mistry
Single spool Turbojet EngineDouble spool Turbojet EngineMIG23 afterburnerDr. Chetan S. Mistry
Why afterburner ? After burning (reheat) method which augmenting the basic thrust of engine. Increasing thrust without adding extra weight or complexityAltitude Improve aircraft takeoff, climb and combat performance for supersonic . Chetan S. Mistry
Turbojet Engine Use of high exhaust gas velocity increases the Thrust developed by the engine. Simplicity of design, Efficient at supersonic speed. Improvement in efficiency.SFCPower at supersonic flight.Noise?Dr. Chetan S. Mistry
Lecture-3ADVANCED GAS TURBINE THEORY
Turbofan EnginesAft fanForward fanMixed flowNon A/BUnmixed flowHigh BypassratioLow BypassratioNon afterburningWith A/BAfterburningSingle spoolGeared fanTwo spoolThree spoolUngeared fanDr. Chetan S. Mistry
Single-spool Turbofan xhaustInletBypass airflowPrimary airflow m Cold HotmBypass ratio fanm corem At nozzle exit, fluid flow at primary and secondary nozzle are mixed.Optional: Afterburner, Convergent or Con/Di NozzleDr. Chetan S. Mistry
Two spool turbofan - Low bypass ratioDivergentNozzleAir IntakeLPCompressorsLP TurbinesBurnerHPCompressorsHP TurbineDr. Chetan S. Mistry
Maximum Thrust:takeoff thrust: 2,050 lbf (9.1 kN)OPR: 24BR: 2.9SFC: 0.7 lb/lbf/h (20 g/kN/s)T‐to‐W: 5GE Honda HF120 Aero EngineDr. Chetan S. Mistry
ADVANCED GAS TURBINE THEORY Dr. Chetan S. Mistry. Lecture-1 ADVANCED GAS TURBINE THEORY. Dr. Chetan S. Mistry 1. General propulsion systems, 2. Theory of intakes and exhaust systems, thrust reversers, 3. Jet engine noise and methods of noise reduction, 4. Cycle analysis of one and two spool
