Annoyance Caused by Advanced Turboprop Aircraft Flyover Noise: Comparison of Different Propeller Configurations PDF Download
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Author: National Aeronautics and Space Adm Nasa Publisher: Independently Published ISBN: 9781730782893 Category : Science Languages : en Pages : 78
Book Description
A laboratory experiment was conducted to compare the annoyance of flyover noise from advanced turboprop aircraft having different propeller configurations with the annoyance of conventional turboprop and turbofan aircraft flyover noise. A computer synthesis system was used to generate 40 realistic, time varying simulations of advanced turboprop takeoff noise. Of the 40 noises, single-rotating propeller configurations (8) and counter-rotating propeller configurations with an equal (12) and unequal (20) number of blades on each rotor were represented. Analyses found that advanced turboprops with single-rotating propellers were, on average, slightly less annoying than the other aircraft. Fundamental frequency and tone-to-broadband noise ratio affected annoyance response to advanced turboprops, but the effects varied with propeller configuration and noise metric. The addition of duration corrections and corrections for tones above 500 Hz to the noise measurement procedures improved annoyance prediction ability. Mccurdy, David A. Langley Research Center...
Author: National Aeronautics and Space Adm Nasa Publisher: Independently Published ISBN: 9781730782893 Category : Science Languages : en Pages : 78
Book Description
A laboratory experiment was conducted to compare the annoyance of flyover noise from advanced turboprop aircraft having different propeller configurations with the annoyance of conventional turboprop and turbofan aircraft flyover noise. A computer synthesis system was used to generate 40 realistic, time varying simulations of advanced turboprop takeoff noise. Of the 40 noises, single-rotating propeller configurations (8) and counter-rotating propeller configurations with an equal (12) and unequal (20) number of blades on each rotor were represented. Analyses found that advanced turboprops with single-rotating propellers were, on average, slightly less annoying than the other aircraft. Fundamental frequency and tone-to-broadband noise ratio affected annoyance response to advanced turboprops, but the effects varied with propeller configuration and noise metric. The addition of duration corrections and corrections for tones above 500 Hz to the noise measurement procedures improved annoyance prediction ability. Mccurdy, David A. Langley Research Center...
Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781722239176 Category : Languages : en Pages : 76
Book Description
A laboratory experiment was conducted to compare the annoyance of flyover noise from advanced turboprop aircraft having different propeller configurations with the annoyance of conventional turboprop and turbofan aircraft flyover noise. A computer synthesis system was used to generate 40 realistic, time varying simulations of advanced turboprop takeoff noise. Of the 40 noises, single-rotating propeller configurations (8) and counter-rotating propeller configurations with an equal (12) and unequal (20) number of blades on each rotor were represented. Analyses found that advanced turboprops with single-rotating propellers were, on average, slightly less annoying than the other aircraft. Fundamental frequency and tone-to-broadband noise ratio affected annoyance response to advanced turboprops, but the effects varied with propeller configuration and noise metric. The addition of duration corrections and corrections for tones above 500 Hz to the noise measurement procedures improved annoyance prediction ability. Mccurdy, David A. Langley Research Center...
Author: Kryter Publisher: BRILL ISBN: 9004653449 Category : Language Arts & Disciplines Languages : en Pages : 687
Book Description
Contains information on the fundamentals of hearing and sound physics. This book offers a review of research findings and concepts on the effects of noise on people. It focuses on the psychological and physiological affects of noise on hearing and performance. It explains the interrelations of various factors involved in making noise a problem.
Author: National Aeronautics and Space Adm Nasa
Author: National Aeronautics and Space Adm Nasa
Author: National Aeronautics and Space Administration (NASA)
Author: David A. McCurdy
Author: David A. McCurdy
Author: David A. MacCurdy
Author: 
Author: 
Author: United States. National Aeronautics and Space Administration
Author: Kryter
Author: