Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-28T10:02:42.557Z Has data issue: false hasContentIssue false
  • English
  • Français

Noise Measurements on Cold Jets using Convergent-Divergent Nozzles

Published online by Cambridge University Press:  07 June 2016

R. E. Franklin
R. E. Franklin*
Affiliation:
Department of Aeronautical Engineering, University of Southampton
Get access

Summary:

Tests have been carried out on a series of convergent-divergent nozzles and the results compared with those from a test on a convergent nozzle. At the design pressure ratio, reductions in the noise were found, particularly at 90° to the jet direction. For lower forward pressures the noise is also less, but above the design pressure the noise rises rapidly to the same level as that with a convergent nozzle. In the experiments cold jets were used, but the results are probably applicable in certain respects to hot jets.

Type
Research Article
Information
Aeronautical Quarterly , Volume 8 , Issue 4 , November 1957 , pp. 346 - 359
Copyright
Copyright © Royal Aeronautical Society. 1957

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Hollingsworth, M. A. and Richards, E. J. A Schlieren Study of the Interaction between a Vortex and a Shockwave in a Shock Tube. A.R.C. 17,985, 1955.Google Scholar
2. Powell, A. Mechanism of Choked Jet Noise. Proceedings of the Physical Society, B, Vol. 66, p. 1039, 1953.CrossRefGoogle Scholar
3. Rainbird, W. J. and Norrie, D. H. Design Tables for Five Axisymmetric Supersonic Nozzles, Mach Numbers 14, 16, 18, 20, 2.2. National School of Engineering, Canter bury University College, Christchurch, New Zealand, October 1953.Google Scholar
4. Powell, A. A Note on the Sound from Weak Disturbances of a Normal Shock Wave. A.R.C. Current Papers 194, April 1954.Google Scholar
5. Greatrex, F. B. Jet Noise. A.R.C. 17,493, March 1955.Google Scholar