Undergraduate Teaching 2022-23

Engineering Tripos Part IIB, 4A3: Turbomachinery, 2022-23

Engineering Tripos Part IIB, 4A3: Turbomachinery, 2022-23

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Module Leader

Prof R.J. Miller


Prof R.J. Miller and Dr J. Taylor

Lab Leader

Dr J. Taylor

Timing and Structure

Michaelmas term. 75% exam / 25% coursework. 12 lectures (including examples classes) + coursework


3A1 and 3A3 assumed


The aims of the course are to:

  • provide a general understanding of the principles that govern the design of axial flow and radial flow turbomachines.


As specific objectives, by the end of the course students should be able to:

  • understand the principles underpinning the study of turbomachine aerodynamics.
  • know the requirements for different type of turbomachines.
  • know the factors which influence the overall design of turbomachine stages and which influence the matching of components.
  • know the factors which influence overall design of turbomachines for propulsion and stationary power-plant applications.
  • evaluate the performance of turbine and compressor bladerows and stages using mean-line analyses.
  • select a design for a given duty.
  • present and understand information on stage and machine design.
  • describe and understand compressor off-design performance.
  • analyse the performance of propulsion systems and stationary power plant.


Applications and Characteristics of Turbomachines (12L, Prof. RJ Miller and Dr J. Taylor)

  • Stage design and choice of design parameters.
  • Specific speed, dynamic scaling and measures of efficiency.
  • Analysis of the mean-line flow in compressors and turbines.
  • Radial flow turbomachines.
  • Characteristics of compressors, pumps and turbines.
  • Matching of components: compressors and turbines; nozzles, throttles and diffusers. Compressor off-design problems; stall and its consequences.
  • Application of turbomachines: power plant and aircraft propulsion systems.



Coursework Format

Due date

& marks

Cascade Experiment

Testing of a turbine cascade in a small wind tunnel to measure the blade surface pressure distribution, loss coefficient and flow exit angle.

Time required: About 3 hours in the lab plus 4 hours write up.

Learning objectives:

  • Understand the measurement of profile loss in a turbine cascade.
  • Check the operation of experimental equipment.
  • Understand the assumptions and the likely uncertainties in a set of aerodynamic measurements.

Experimental work done in pairs.

Individual report.

Anonymously marked.


Reports are due 2 weeks after the date of the experiment.




Please refer to the Booklist for Part IIB Courses for references to this module, this can be found on the associated Moodle course.

Examination Guidelines

Please refer to Form & conduct of the examinations.


The UK Standard for Professional Engineering Competence (UK-SPEC) describes the requirements that have to be met in order to become a Chartered Engineer, and gives examples of ways of doing this.

UK-SPEC is published by the Engineering Council on behalf of the UK engineering profession. The standard has been developed, and is regularly updated, by panels representing professional engineering institutions, employers and engineering educators. Of particular relevance here is the 'Accreditation of Higher Education Programmes' (AHEP) document which sets out the standard for degree accreditation.

The Output Standards Matrices indicate where each of the Output Criteria as specified in the AHEP 3rd edition document is addressed within the Engineering and Manufacturing Engineering Triposes.

Last modified: 28/09/2022 14:08