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Measurement of Jet Noise Suppression Using a Small Turbojet Engine
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English
Abstract
The effectiveness of extended plug nozzles in reducing jet engine exhaust noise was investigated on small scale laboratory nozzles at ITT Research Institute and on a small turbojet engine at Williams Research Corp.
The geometry of the nozzle was optimized on the basis of noise reduction versus thrust loss. The extended plug reduced noise on both laboratory nozzles and the turbojet engine for pressure ratios above critical.
The use of a small turbojet engine for evaluating noise suppression devices is described.
Citation
Moore, H. and Clinch, J., "Measurement of Jet Noise Suppression Using a Small Turbojet Engine," SAE Technical Paper 670157, 1967, https://doi.org/10.4271/670157.Also In
References
- Sperry Kamo Peter “Experimental and Theoretical Studies of Jet Noise Phenomena,” Technical Documentary Report ASD-TDR-62-303, Aeronautical Systems Div. Wright-Patterson Air Force Base Ohio February 1962
- Peter Kamo Sperry “Fundamental Study of Jet Noise Generation and Suppression,” Technical Documentary Report ASD-TRD-63-326, Aeronautical Systems Div. Wright-Patterson Air Force Base Ohio March 1963
- Moore H. B. Clinch J. M. “Application of Extended Plug Nozzle Noise Suppression Theory to a Small Turbojet Engine.” Final Report to Federal Aviation Agency under Contract No. FA 64WA-5062 Aug. 7 1965
- Lighthill M. J. “On Sound Generated Aerodynamic-ally II.” Proc. Roy. Soc. London 1954 1 32