Holographic Flow Visualisation of Turbofan By-Pass and Core Nozzle Streams PUBLIC ACCESS

[+] Author Affiliations
P. J. Bryanston-Cross

Warwick University, Coventry, UK

A. E. Harris, S. Bakshi

Aircraft Research Association Ltd., Bedford, UK

Paper No. 89-GT-260, pp. V002T02A006; 8 pages
  • ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery
  • Toronto, Ontario, Canada, June 4–8, 1989
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7914-6
  • Copyright © 1989 by ASME


This investigation has been made to show the suitability of holography as an optical flow diagnostic for turbofan nozzle flow structures. In this case a static 1/25th scale model of a powered turbofan nacelle has been used for nacelle/wing integration studies and evaluated using a holographic technique.

The holograms made show the core jet and the by-pass flow as it emerges from the nacelle nozzle system. They also show evidence of structural vibration at the by-pass nozzle wall.

A comparison has also been made with alternative non-invasive diagnostic techniques.

Copyright © 1989 by ASME
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