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Control of Propeller Noise In Turboprop Installations
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English
Abstract
ORIGINS of propeller noise and possible means for its reduction both within and external to turboprop aircraft are discussed here.
Decreasing the tip speed and increasing the number of blades of turboprop propellers result in quieter performance within the aircraft but with a heavy weight penalty. Changes in certain aircraft design parameters, such as increasing clearance between fuselage wall and propeller tips, can also reduce internal noise and vibration.
Improvements in external turboprop noise can be achieved by use of quiet-type propellers, increased rate and angle of climb, preferential runways, adequate airport zoning, and sound-dissipating foliage and ground covers.
Authors
Citation
Schmey, J. and Guerke, R., "Control of Propeller Noise In Turboprop Installations," SAE Technical Paper 550254, 1955, https://doi.org/10.4271/550254.Also In
References
- “Handbook of Noise Measurement,” Peterson A. P. G. and Beranek L. L. General Radio Co. Cambridge, Mass. 1953
- NACA TN 2968 June 1953 “Propeller-Noise Charts for Transport Airplanes,” Hubbard H. H.
- WADC TN 52-341 1952 “Aerodynamic Noise and the Estimation of Noise in Aircraft,” Rogers O. R. and Cook R. F.
- “Acoustic Measurements,” Beranek L. L. Wiley New York 1949