AS3403 Aerospace Propulsion – I Syllabus:
AS3403 Aerospace Propulsion – I Syllabus – Anna University Regulation 2021
OBJECTIVES:
• To understand the principles of operation of aircraft propulsion systems.
• To extend the performances of aircraft propulsion systems.
• To introduce the working of different types of compressors and solve complex problems
• To introduce the working of different types of turbines and solve complex problems
• To understand the combustion process in Jet Engines
• To understand the basics of integral ram-rocket and its performance.
UNIT I SUBSONIC AND SUPERSONIC INTAKES
Performance of subsonic and supersonic intakes – Performance parameters – Sources of losses – Starting problem in supersonic intakes – Modes of operation of an external compression intake.
UNIT II CENTRIFUGAL AND AXIAL FLOW COMPRESSORS
Principle of operation – Work done and pressure rise – diffuser – Compressibility effects – nondimensional quantities for plotting compressor characteristics – Centrifugal compressor characteristics.
Basic operation – Elementary theory – Factors affecting stage pressure ratio – Blockage in the compressor annulus – Degree of reaction – Three-dimensional flow – Calculation of stage performance – Compressibility effects – Axial compressor characteristics.
UNIT III AXIAL AND RADIAL FLOW TURBINES
Elementary theory of axial flow turbine – Vortex theory – Choice of blade profile, pitch and chord – Estimation of stage performance – Overall turbine performance – Turbine Blade Cooling– Radial flow turbine – Operating Principle – Velocity Diagram and Applications.
UNIT IV COMBUSTION CHAMBERS AND NOZZLES
Operational requirements – Types of combustion system – Gas Turbine Combustors – Afterburners – Fuel injection in combustion chamber – Important factors affecting combustor design – Combustion chamber performance – Exhaust Nozzles – Fixed and variable geometry nozzles – Functions of nozzles – Thrust vector control – Thrust reversal.
UNIT V RAMJET PROPULSION
Thermodynamic cycle – performance parameters – Performance variation – Components – combustors – Solid and liquid ramjets – Design of a Ramjet – basics of integral ram-rocket and its performance.
TOTAL = 45 PERIODS
OUTCOMES:
On successful completion of this course, the student will be able to
• Calculate the forces produced by aircraft propulsion systems using control volume and momentum equation.
• Solve complex problems in compressors used in aircraft.
• Solve complex problems in turbines used in aircraft
• Determine the phenomena which characterize the fluid dynamic behaviour of air-breathing propulsion systems.
• Determine the approximate use parameters of an existing gas turbine engine.
• Model ramjet operations, features, and problems associated with it.
TEXT BOOKS:
1. Farokhi, S., “Air Craft Propulsion”, Wiley, 2nd Ed., 2014.
2. Hill P. G., and Peterson C. R., “Mechanics and Thermodynamics of Propulsion”, Pearson Education, 2nd Ed., 2009.
REFERENCES:
1. Mathur, M.L. and Sharma, R.P., “Gas Turbine, Jet and Rocket Propulsion”, Standard Publishers & Distributors, Delhi, 2nd Ed., 2014.
2. Oates G. C., “Aerothermodynamics of Aircraft Engine Components”, AIAA Education Series, 1985.
3. Rolls Royce, “The Jet Engine”, Hand Book, Wiley – 5th Ed., 2015.
4. Saravanamuttoo, H.I.H., Rogers, and G.F.C., Cohen, H., “Gas Turbine Theory”, Pearson, 7th Ed., 2017.