Coursecode: wb4280
Coursename: Aircraft Gas Turbines

DUT creditpoints: 1
ECTS creditpoints: 2
Subfaculty of Mechanical Engineering and Marine Technology
Lecturer(s): Buijtenen, prof. ir. J.P. van Tel.: 015-2782179
Catalog data:
Propulsion, thrust, Brayton-cycle, gas turbine, turbojet, turboshaft, turbofan, performance calculation, 		Courseyear: 2
Semester: 0/0/2/0
Hours p/w: 2
Other hours: 0
Assessment: Written
Assessm.period(s): 1, 3, 5
(see academic calendar)
Prerequisites: lr18, wb1224
Follow up: wb4409A, wb4409B, wb4409C
Detailed description of topics:
  • Introduction. Historical development. The gas turbine industry.
  • The energy conversion proces in a propulsion system and the classification of aircraft engines based on the steps in the conversion proces.
  • Performance parameters and their definitions.
  • The ideal cycle and the effect of compressor pressure ratio, ram pressure ratio and turbine inlet temperature on performance.
  • The real cycle: gas properties, component losses and their effects on performance.
  • Gasgenerator and turbojet performance, convergent and convergent-divergent nozzles.
  • Turbofan engines with and without mixing, effect of bypass ratio and bypass pressure ratio on performance.
  • Examples of performance calculations.
Course material:
C.J. Houtman, W.P Visser: Gasturbines, 1999 (reader)
References from literature:
Chapters I-IV from Cohen H, Rogers GFC, Saravannamuttoo HIH, Gas Turbine Theory, Longman, London, 1984.ISBN 0-582-30539-X
Remarks (specific information about assesment, entry requirements, etc.):
Goals:
This course is designed to provide the students with a basic knowledge of the energy conversion proces in aircraft gas turbine engines and of the relationship between engine configuration and operational requirements.
Computer use:
Laboratory project(s):
Demonstration of a small two-shaft gas turbine: start-up and running, instrumentation and analysis of measured data. Demonstration of the aerodynamic performance of a small three-stage axial compressor. Duration 3-4 hours. No report required. Code 4280PR.
Design content:
The course has a design aspect in so far as the thermodynamic cycle is considered. Some aerodynamic design aspects are dealt with, the treatment of the mechanical design is descriptive.
Percentage of design: 25%