JNTUH B.Tech 3rd year (3-1) Aerospace Propulsion – I gives you detail information of Aerospace Propulsion – I R13 syllabus It will be help full to understand you complete curriculum of the year.
Objective
- To acquaint the student with the operating principles,construction,thermodynamic modeling and analysis of aircraft gas turbine engines and the principles components.
UNIT-I
Flight Propulsion-Aircraft Gas Turbine Engines-Generation of Trust Engine performance Parameters History of flight propulsion, Role of reciprocating engines, operating envelope of flight vechicles.Engine operational limits.Air breathing emgines-types. Aircraft gas turbine engines-types, operating principles, distinguishing features-sehamatic diagrams, relative merits, applications. Engine components-funtion, sehamatic diagram, layout, engine station numbering. Trust generation-momentum equations. Gross, net, uninstalled, installedtrust, propulsive efficiency. Engine performance parameters-specific thrust, specific fuel consumption, total efficiency- performance trends. Effect of flight conditions, ject exit speed, exit pressure. Role of propulsion in aircraft performance. Criteria for engine selection, airframe-engine matching.
UNIT-II
Aerothermodynamic Modeling of Engine and Components- Parametric Cycle Analysis of Engines Engine components- performance requirements, thermodynamic processes- pressure ratios, temperature ratios. Energy transfer, losses. Performance- polytropic, stage and component effciencies, burning efficiency, under and over expansion- figures of merit- significance- ideal component characteristics.
Aircraft gas turbine engines- cycle representation- turbojet, turbojet with reheat, turbofan. Computation of neft work, thermal efficiency- appication to thrust equation. Parametric cycle analysis- definition, purpose- determination of engine design performance parameters- effect of component performance, engine design choices, design constraints, flight conditions, operating parameters- determintaion of engine design point, design point performance- computation for ideal turbojet, turbofan engines.
UNIT-III
Aircraft Engine componets- Non-Rotating- Inlets and Exhaust Nozzles, Combustion Systems- Combustors, Afterburners, Ducts and Mixers Subsonic inlets- function, performance requirements, geometry, operating conditions, flow field, cature area, sizing. Flow distortion, diffuser losses- methods for mitigation. Performance characteristics. Supersoinic inlets- compression process, types, construction, losses, perforamnce characteristics.
Exhaust nozzles-pirmary nozzle-governing equations of flow-choking, engine back pressure control, nozzle-area ratio, thrust reversing, vectroing-mechanisms. Performance-performance maps.
Combustion process-characteristics-effects of fuel-air mixture ratio, mass flow rate, combustor. 1-D modeling of flow. Burners-types, components-funtion, schematic diagram, airflow distribution, cooling-types, cooling effectivness. Combuster porformance parameters-effect of combuster design. Fuel injection, atomisation, vaproisation, recirculation-flame stailisation, flame holders. Afterburners, funtion, components, desgin requirements, desgin parameters. The bypass duct-total pressure losses. Mixing process-pressure losses. Aircraft gas turbine engine fuels-composition, specifications of commonly used fuels.
TEXT BOOKS
- Mattingly, J.D., Elements of gas Turbine Propulsion, MC Graw-Hill,1996, ISBN0-07-912196-9.
- Flack, R.D., Fundamentals of jet Propulsion with Applications, cambridge University press,2005,ISBN o-521-81983-0.
- The Jet Engine, Rolls Royce pIc, 1986, ISBN 0-902121-2-5.
REFERENCES
- Cumpsty, N., Jet Proplusion, 2nd edn., cambridge University press,2005, ISBN 0-521-54144-1.
- Kerrebrock,J.L., Aircraft Engines and Gas Turbines, 2nd edn.,MIT press, 1992, ISBN 0-262-11162-4.
- Hill, P.G. and Peterson, C.R., Mechanics and Thermodynamics of Proplusion, 2nd edn., Addison Wesley, 1992.
- Saravanamutto, H.I.H., Rogers, G.F.C. and Cohen, H., Gas Turbine Theory, 5th edn., Prentice Hall, 2001.
- EI-Sayed, A.F., Aircraft Propulsion and Gas Turbine Engines, CRC Press, 2008, ISBN 978-0-8493-9196-5.
- Boyce, M.P., Gas Turbine Enginerring Handbook, 2nd edn., Gulf professional Publishing, 2002, ISBN 0-88415-732-6.
- The Aircraft Gas Turbine Engine and operation, Pratt and Whitney, 1988.
- Oates, G.C., ed., Aerothermodynamics of Aircraft Engine components, AIAA, 1985, ISBN 0-915928-97-3.
Outcome
- The student should able to estimate the performance of the engine,and its components,in terms of the desgin choice parameters and constraints,flight conditions and engine operating conditions.
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