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Gas Turbine Auxiliary Power Unit Noise and Its Attenuation
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English
Abstract
The advent of the on-board gas turbine auxiliary power unit in commercial aircraft created problems of excessive noise levels affecting both passengers and aircraft personnel. This paper analyzes those problems and outlines the advanced techniques being used to reduce gas turbine noises to an acceptable level. Being directed primarily at the gas turbine engineer, a brief explanation of pertinent acoustical terminology is presented to provide a basis for his understanding. Treatment of the major noise sources of a gas turbine and its installation are discussed and evaluated from the standpoint of maximum noise reduction.
Authors
Citation
Dias, J., "Gas Turbine Auxiliary Power Unit Noise and Its Attenuation," SAE Technical Paper 670155, 1967, https://doi.org/10.4271/670155.Also In
References
- American Industrial Hygiene Association “Industrial Noise Manual.” Second Edition 1966
- Peterson Arnold P. G. Gross, Ervin E. Jr. “Handbook of Noise Measurement.” Fourth Edition West Concord, Mass. General Radio Co. 1960
- Wirt L. S. “Gas Turbine Exhaust Noise and Its Attenuation.” Paper No. 1002B presented at SAE International Automotive Engineering Congress Detroit January 1965