Application of atmospheric absorption models for aircraft en route noise

Kieran Poulain, Victor Sparrow, Kenneth Brentner, Louis Sutherland

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Propagation of aircraft en route noise for flights above 18,000 feet above ground level (AGL) (5.49 km AGL) is not currently included in the FAA's community noise prediction tools, but nevertheless important for estimating noise impact in U.S. National Parks and other quiet areas. One key to the accurate estimation of noise impact is atmospheric absorption. In the atmosphere, the absorption coefficient is dependent on altitude as well as frequency. The altitude dependent parameters include mean pressure, temperature, and relative humidity as well as the concentration of molecular species. This altitude effect can be important for certain frequency bands, and this point will be emphasized in this paper. In addition, an improved atmospheric absorption model of Sutherland and Bass [J. Acoust. Soc. Am., Vol. 115, No. 3, 1012-1032 (2004)] shows different values of atmospheric absorption in critical frequency bands for aviation noise at altitude compared to values determined using the ANSI Standard S1.26-1995 (R 2009). For certain situations, the updated atmospheric absorption coefficient could produce significantly different en route noise predictions on the ground.

Original languageEnglish (US)
Title of host publication24th National Conference on Noise Control Engineering 2010, Noise-Con 10, Held Jointly with the 159th Meeting of the Acoustical Society of America
Pages1150-1157
Number of pages8
StatePublished - Dec 1 2010
Event24th National Conference on Noise Control Engineering 2010, Noise-Con 2010, Held Jointly with the 159th Meeting of the Acoustical Society of America - Baltimore, MD, United States
Duration: Apr 19 2010Apr 21 2010

Publication series

Name24th National Conference on Noise Control Engineering 2010, Noise-Con 10, Held Jointly with the 159th Meeting of the Acoustical Society of America
Volume2

Other

Other24th National Conference on Noise Control Engineering 2010, Noise-Con 2010, Held Jointly with the 159th Meeting of the Acoustical Society of America
CountryUnited States
CityBaltimore, MD
Period4/19/104/21/10

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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    Poulain, K., Sparrow, V., Brentner, K., & Sutherland, L. (2010). Application of atmospheric absorption models for aircraft en route noise. In 24th National Conference on Noise Control Engineering 2010, Noise-Con 10, Held Jointly with the 159th Meeting of the Acoustical Society of America (pp. 1150-1157). (24th National Conference on Noise Control Engineering 2010, Noise-Con 10, Held Jointly with the 159th Meeting of the Acoustical Society of America; Vol. 2).