Topic
Aircraft noise
About: Aircraft noise is a research topic. Over the lifetime, 3051 publications have been published within this topic receiving 32039 citations.
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TL;DR: In this article, the results from a social survey of reaction to aircraft noise are used to investigate the effectiveness of various measures of noise exposure, including the equal energy index, models involving a logarithmic trade-off of noise level and number of events, peak-level models and other non-standard noise descriptors.
8 citations
01 Dec 1977
8 citations
TL;DR: In this article, the authors investigated both acoustical and non-acoustical factors affecting indoor annoyance due to residential road traffic and aircraft noise, focusing on three factors: (1) the role of windows as a feature of the building where people live; (2) the individual environmental concern as a general attitude; and (3) household income as an indicator of socioeconomic resources.
8 citations
01 May 1992
TL;DR: In this paper, an examination was made of several published jet noise studies for the purpose of evaluating scale effects important to the simulation of jet aeroacoustics, and several studies confirmed that small conical jets, one as small as 59 mm diameter, could be used to correctly simulate the overall or perceived noise level (PNL) noise of large jets dominated by mixing noise.
Abstract: An examination was made of several published jet noise studies for the purpose of evaluating scale effects important to the simulation of jet aeroacoustics Several studies confirmed that small conical jets, one as small as 59 mm diameter, could be used to correctly simulate the overall or perceived noise level (PNL) noise of large jets dominated by mixing noise However, the detailed acoustic spectra of large jets are more difficult to simulate because of the lack of broad-band turbulence spectra in small jets One study indicated that a jet Reynolds number of 5 x 10(exp 6) based on exhaust diameter enabled the generation of broad-band noise representative of large jet mixing noise Jet suppressor aeroacoustics is even more difficult to simulate at small scale because of the small mixer nozzles with flows sensitive to Reynolds number Likewise, one study showed incorrect ejector mixing and entrainment using a small-scale, short ejector that led to poor acoustic scaling Conversely, fairly good results were found with a longer ejector and, in a different study, with a 32-chute suppressor nozzle Finally, it was found that small-scale aeroacoustic resonance produced by jets impacting ground boards does not reproduce at large scale
8 citations
TL;DR: In this article, the authors examine issues related to noise monitoring in the vicinity of moderate-sized airports, monitoring was performed for 5 months at three sites in the near vicinity of the Decatur, Illinois Municipal Airport.
Abstract: In order to examine issues related to noise monitoring in the vicinity of moderate‐sized airports, monitoring was performed for 5 months at three sites in the vicinity of the Decatur, Illinois Municipal Airport. The study issues included (1) comparison of predicted and measured day/night average sound levels (DNL), (2) comparison of individual aircraft levels with prediction, (3) temporal sampling requirements for monitoring, and (4) validation that the measured noise is aircraft noise and not other community noise. The measured DNL and the computer predictions compare quite favorably, and most individual aircraft levels compare favorably with data in the FAA computer models. In terms of temporal sampling requirements, it appears that one can use a strategy of choosing four random weeks throughout the year (one from each quarter) to achieve a +2 to −3‐dB tolerance. It was not possible to differentiate ‘‘airport’’ noise from other ‘‘community’’ noise. The results show that it may be better (and far less co...
8 citations