Resonance Testing of the Gnome Combustor Liner

Abstract

This report details the results of a series of experimental tests conducted on a combustor liner of the Rolls-Royce Gnome engine. These tests were undertaken as part of an investigation into the cause of cracking of the combustor liner's splitter vane. A modal analysis of the splitter vane was undertaken and mode shape results are presented over a wide range of natural frequencies. A comparison of strains generated by these modes in the areas of cracking shows that two modes in particular are a possible cause of the cracking. The effects on the splitter vane, of an interference fit between it and the engine rear frame splitter ring, are also quantified both statically and dynamically.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1997
Accession Number
ADA348490

Entities

People

  • James Dunlop

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Australia
  • Combustors
  • Engine Components
  • Engineering
  • Manufacturing
  • Measurement
  • Mechanical Engineering
  • Modal Analysis
  • Propulsion Systems
  • Resonance
  • Resonant Frequency
  • Strain Gages
  • Tensile Strain
  • Universities
  • Vibration

Readers

  • Aerodynamics.
  • Internal Combustion Engine (ICE) Technology.
  • Materials Science (Mechanical Engineering).