Development of Simplified Procedure for Computing the Absorption of Sound by the Atmosphere and Applicability to Aircraft Noise Certification: Proposed SAE Method

This report presents the results of the study to extend the useful attenuation range of the Approximate Method outlined in the American National Standard, “Method for Calculation of the Absorption of Sound by the Atmosphere” (ANSI S1.26-1995), and provide a basis for replacing the current Society of Automotive Engineers Aerospace Recommended Practice 866A, “Standard Values of Atmospheric Absorption as a Function of Temperature and Humidity” (SAE ARP 866A). The report describes the implementation of the one-third octave-band adaptations of the ISO/ANSI pure-tone equations, and the development and testing of the proposed SAE Method.

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• Record URL:
  https://rosap.ntl.bts.gov/view/dot/9696
• Corporate Authors:

  Volpe National Transportation Systems Center

  Environmental Measurement and Modeling Division
  Kendall Square
  Cambridge, MA  United States  02142-1093

  Federal Aviation Administration

  Office of Environment and Energy
  800 Independence Avenue, SW
  Washington, DC  United States  20591
• Authors:
  • Rickley, Edward J
  • Rosenbaum, Joyce E
  • Fleming, Gregg G
  • Roof, Christopher
  • Boeker, Eric R
• Publication Date: 2012-11

Language

• English

Media Info

• Media Type: Web
• Edition: Final Report
• Features: Appendices; Figures; References; Tables;
• Pagination: 47p

Subject/Index Terms

• TRT Terms: Aircraft noise; Atmosphere; Certification; Mathematical prediction; Sound absorption; Sound transmission
• Identifier Terms: Aviation Environmental Design Tool; INM (Integrated Noise Model)
• Subject Areas: Aviation; Data and Information Technology; Environment; I15: Environment;

Filing Info

• Accession Number: 01472486
• Record Type: Publication
• Report/Paper Numbers: DOT-VNTSC-FAA-12-14
• Files: NTL, TRIS, ATRI, USDOT
• Created Date: Feb 19 2013 8:47AM