AO4101 Aerospace Propulsion Syllabus:
AO4101 Aerospace Propulsion Syllabus – Anna University PG Syllabus Regulation 2021
COURSE OBJECTIVES:
This course will enable the students
1. To gain knowledge on fundamental principles of aircraft and rocket propulsion.
2. To describe various types of propulsion system with their merits and challenges.
3. To gain adequate knowledge on propellers and its characteristics.
4. To be familiar with the working concept of inlets, nozzles and combustion chamber with their applications in a propulsion system.
5. To gain sufficient information about compressors and turbines. Students also will get an exposure on electric propulsion methods
UNIT I ELEMENTS OF AIRCRAFT PROPULSION
Classification of power plants – Methods of aircraft propulsion – Propulsive efficiency – Specific fuel consumption – Thrust and power- Factors affecting thrust and power- Illustration of working of piston engines and Gas turbine engines – Characteristics of piston engine, turboprop, turbofan and turbojet engines, Ram jet, Scram jet – Methods of Thrust augmentation.
UNIT II PROPELLER THEORY
Momentum theory, Blade element theory, combined blade element and momentum theory, propeller power losses, propeller performance parameters, prediction of static thrust- and in flight, negative thrust, prop fans, ducted propellers, propeller noise, propeller selection, propeller charts.
UNIT III INLETS, NOZZLES AND COMBUSTION CHAMBERS
Subsonic and supersonic inlets – Relation between minimum area ratio and external deceleration ratio – Starting problem in supersonic inlets –Modes of inlet operation, jet nozzle – Efficiencies – Over expanded, under and optimum expansion in nozzles – Thrust reversal. Classification of Combustion chambers – Combustion chamber performance – Flame tube cooling – Flame stabilization.
UNIT IV AXIAL FLOW COMPRESSORS, FANS AND TURBINES
Introduction to centrifugal compressors- Axial flow compressor- geometry- twin spools- three spools- stage analysis- velocity polygons- degree of reaction – radial equilibrium theory performance maps- axial flow turbines- geometry- velocity polygons- stage analysis- performance maps- thermal limit of blades and vanes.
UNIT V ROCKET AND ELECTRIC PROPULSION
Introduction to rocket propulsion – Reaction principle – Thrust equation – Classification of rockets based on propellants used – solid, liquid and hybrid – Comparison of these engines with special reference to rocket performance – electric propulsion – classification- electro thermal – electro static – electromagnetic thrusters- geometries of Ion thrusters- beam/plume characteristics – hall thrusters.
TOTAL: 45 PERIODS
COURSE OUTCOMES:
Upon completion of this course, students will
CO1: Get exposure with the different types of propulsive devices used for jet and rocket propulsion.
CO2: Have knowledge on propeller theory and its performance parameters.
CO3: Be able to distinguish different types of inlets and their performance trends in subsonic and supersonic flows.
CO4: Be able to describe the process of combustion and the parameters that affect combustion in jet engines.
CO5: Be able to acquire knowledge on the basic concepts of various types of electric propulsion systems.
REFERENCES:
1. Cohen, H, Saravanamuttoo, HIH., Rogers, GFC, Paul Straznicky and Andrew Nix , “GasTurbine Theory”, Pearson Education Canada; 7th edition, 2017.
2. Gill,WP, Smith,HJ & Ziurys,JE, “Fundamentals of Internal Combustion Engines as applied to Reciprocating, Gas turbine & Jet Propulsion Power Plants”, Oxford & IBH Publishing Co.,1980.
3. Hill, PG. & Peterson, CR. “Mechanics & Thermodynamics of Propulsion” Pearson education,2nd edition, 2014.
4. Oates, GC,“Aerothermodynamics of Aircraft Engine Components”, AIAA Education Series, 2007.
5. Sutton,GP, “Rocket Propulsion Elements”, John Wiley & Sons Inc., New York, 9th Edition, 2017.
6. J Seddon & E L Goldsmith. “ Intake Aerodynamics”, AIAA education series. 1999.