Integrated Noise Model (INM) version 6.0 technical manual

Details

• Creators:
  Olmstead, Jeffrey R. ; Fleming, Gregg G. ; Gulding, John M. ; Roof, Christopher J. ; Gerbi, Paul J. ; Rapoza, Amanda S.
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.). Acoustics Facility ; United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy
• Subject/TRT Terms:
  • Airport noise
  • Computer models
  • Heliports
  • Noise
  • Measurement
  • Manuals
  • Sound level Computer model
  • Noise contours
  • Integrated Noise Model
  • Noise-level prediction
  More +
• Publication/ Report Number:
  FAA-AEE-02-01
• Resource Type:
  Manual
• Geographical Coverage:
  United States
• Corporate Publisher:
  John A. Volpe National Transportation Systems Center (U.S.)
• Abstract:
  The Federal Aviation Administration, Office of Environment and Energy (FAA, AEE-100) has ; developed Version 6.0 of the Integrated Noise Model (INM) with support from the John A. Volpe ; National Transportation Systems Center, Acoustics Facility (Volpe Center) for development of the ; acoustic computation module, and from the ATAC Corporation for systems integration, development ; of the graphical interface, and methods for computing aircraft flight profiles and constructing ; flight paths, which are processed by the acoustics module. ; This Technical Manual describes the core technical components in INM 6.0, including the flightpath ; methodology (Chapter 2), along with the basic methodology employed by the INM to compute ; noise levels or time-above metrics at a single, user-specified observer, or at an evenly-spaced, ; regular grid of observers (Chapter 3). ; The noise/time computation methodology includes a description of: (1) computation of the flightsegment ; geometric and physical parameters; (2) flight-segment noise-level interpolation process; ; (3) atmospheric absorption adjustment; (4) acoustic impedance adjustment; (5) flight-segment ; noise-fraction adjustment for exposure-based metrics; (6) aircraft speed adjustment for ; exposure-based metrics; (7) lateral attenuation adjustment; (8) ground-based directivity ; adjustment for observers behind start-of-takeoff-roll, as well as for computing metrics ; associated with run-up operations; (9) metric computation process; and (10) development of a ; recursively-subdivided irregular grid methodology, which is used for computing noise contours ; (Chapter 4).
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• Format:
  PDF
• Funding:
  DTFA01-99-C-00003;FA265/A2012
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/9823/dot_9823_DS1.pdf
• File Type:
  [PDF - 703.68 KB]
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha-512:7200b197f503d9a84e8c44604c3ebfebd33b009e1967fd68ba03d330ec757cc6eb8604e326ec302eed8318095a3de295ce758b577e12abd99c53b27f35dee19b