Chapter 7. Off Design Performance

  1. Philip P. Walsh BSc, FRAeS, CEng1 and
  2. Paul Fletcher MA (Oxon), MRAeS, CEng2

Published Online: 11 FEB 2008

DOI: 10.1002/9780470774533.ch7

Gas Turbine Performance, Second Edition

Gas Turbine Performance, Second Edition

How to Cite

Walsh, P. P. and Fletcher, P. (2004) Off Design Performance, in Gas Turbine Performance, Second Edition, Blackwell Science Ltd, Oxford, UK. doi: 10.1002/9780470774533.ch7

Author Information

  1. 1

    Head of Performance and Engine Systems, Rolls-Royce plc

  2. 2

    Manager, Prelim Design, Energy Business, Rolls-Royce plc

Publication History

  1. Published Online: 11 FEB 2008
  2. Published Print: 15 MAR 2004

ISBN Information

Print ISBN: 9780632064342

Online ISBN: 9780470774533



  • engine components;
  • turboshaft;
  • gas generator;
  • engine compressor;
  • turbofan


This chapter contains section titled:

  • Introduction

  • Generic of design characteristics

  • Off design performance modelling—methodology

  • Off design performance modelling—flow diagrams and sample calculations

  • Geometric variation: modelling and effects

  • Off design matching: physical mechanisms

  • Ratings and control