Integrated noise model (INM) version 7.0 technical manual

Boeker, Eric R.; Dinges, Eric; He, Bill; Fleming, Gregg; Roof, Christopher J.; Gerbi, Paul J.; Rapoza, Amanda S.; Hermann, Justin; John A. Volpe National Transportation Systems Center (U.S.). Acoustics Facility; ATAC Corporation

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Integrated noise model (INM) version 7.0 technical manual

2008-01-31
By Boeker, Eric R. ; Dinges, Eric ; He, Bill ; ...

[PDF-2.97 MB]

English

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Creators:

Boeker, Eric R. ; Dinges, Eric ; He, Bill ; Fleming, Gregg ; Roof, Christopher J. ; ... More +

Boeker, Eric R. ; Dinges, Eric ; He, Bill ; Fleming, Gregg ; Roof, Christopher J. ; Gerbi, Paul J. ; Rapoza, Amanda S. ; Hermann, Justin Less -
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.). Acoustics Facility ; ATAC Corporation

John A. Volpe National Transportation Systems Center (U.S.). Acoustics Facility ; ATAC Corporation Less -
Corporate Contributors:

United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy
Subject/TRT Terms:

[+]

Airport Noise Computer Model Computer Models Day-night Average Sound Level FAR Part 150 Heliport Noise Model Heliports Integrated Noise Model Ldn Manuals Measurement Noise Noise-level Metric Noise-level Prediction Noise Contours Sound Level
Publication/ Report Number:

FAA-AEE-08-01
Resource Type:

Manual
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Aviation Administration. Office of Environment and Energy
Abstract:

The Federal Aviation Administration, Office of Environment and Energy (FAA, AEE-100) has developed Version 7.0 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 Version 7.0, including the flight-path methodology (Chapter 2), along with the basic methodology employed by the INM to compute noise levels or time-based 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 flight-segment 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) updated 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) new helicopter noise modeling capabilities and associated adjustments (including advancing tip mach number, lateral directivity, static directivity and

static duration adjustments); (10) metric computation process; and (11) development of a

recursively-subdivided irregular grid methodology, which is used for computing noise contours

(Chapter 4).
Format:

PDF
Funding:

DTFAA-C-05-00075 ; FA4T/ES205

DTFAA-C-05-00075 ; FA4T/ES205 Less -
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:b2430cfcb44ae53a5ce5518a4a9d09c597d43d6f59db50095b97c8b2c2bd335c
Download URL:

https://rosap.ntl.bts.gov/view/dot/12188/dot_12188_DS1.pdf
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No Additional Files

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Integrated noise model (INM) version 7.0 technical manual

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