National Institute of Technology Rourkela

राष्ट्रीय प्रौद्योगिकी संस्थान राउरकेला

ଜାତୀୟ ପ୍ରଯୁକ୍ତି ପ୍ରତିଷ୍ଠାନ ରାଉରକେଲା

An Institute of National Importance

Syllabus

Course Details

Subject {L-T-P / C} : ME6363 : Gas Turbine and Jet Propulsion { 3-0-0 / 3}

Subject Nature : Theory

Coordinator : S. Murugan

Syllabus

Module 1 :

Unit - I: Gas dynamics [7]
Introduction, application, shaft power gas dynamics – Compressibility effect, steady one dimensional compressible flow of a perfect gas in a duct, isentropic flow in a constant area duct with friction, normal shock waves, oblique shock wave, isentropic two dimensional, supersonic expansion and compression.

Unit - II: Blowers and compressors [8]
Centrifugal fans Blowers and Compressors: Principle of operations, work done and pressure rise, slip factor, diffusers, compressibility effects, non dimensional qualities for plotting compressor characteristics. Bray ton cycle, regeneration and reheating cycle analysis Axial flow fans and compressors: Elementary theory, degree of reaction, three dimensional flow, simple design methods, blade design, calculation of stage performance, overall performance, and compressibility effects. Performance characteristics.

Unit - III: Combustion system [7]
Combustion system: Form of combustion, important factors affecting combustion chamber design, combustion processes, combustion chamber performance, practical problem.

Unit-IV: Turbines [7]
Axial flow turbines: elementary theory, vortex theory, choice of blade profile, pitch and chord estimation of stage performance, he cooled turbine.

Unit-V: Performance of gas turbines and jet engines [7]
Prediction of performance of simple gas turbines: component characteristic, off design shaft gas turbine, equilibrium running gas generators, off design o free turbine and jet engine, methods of displacing the equilibrium, running line, incorporation of variable pressure losses, methods of improving part load performance, matching procedure for twin spool engines, behavior of gas turbine .Gas turbine rotors and stresses.

Course Objective

1 .

To present a detailed understanding of the components of a typical turbojet engine.

2 .

To demonstrate the physical processes involved in the operation of turbojets.

3 .

Understand of thermodynamic cycles of jet engines.

4 .

Analyze jet engines determine propulsion efficiency and design inlets and nozzles.

Course Outcome

1 .

CO1: Understand construction and design features of gas turbines as used for power generation.
CO2: Explore to thermodynamics and fluid mechanics component for enhancing the efficiency and effectively of gas turbines
CO3: Develop skills in problem solving for aircraft propulsion systems, in particular gas turbine engines.
CO4: Analyse the performance enhancement approaches for jet propulsion engines
CO5: Describe the basic concepts of rocket propulsion

Essential Reading

1 .

Cohen & Rogers, Gas Turbines, Pearson , 2021

2 .

S.M.Yahya, .Turbines, Compressors and Fans, .Tata McGraw Hill , 2021

Supplementary Reading

1 .

J.E Lee, Theory and design of stream and gas turbine, McGrawHill Book Company Inc , 2022