Integrated Noise Model (INM), version 5.1 : technical manual

Fleming, Gregg G.; Olmstead, J. R.; D'Aprile, J.; Gerbi, P.; Gulding, J.; Plante, J. A.; John A. Volpe National Transportation Systems Center (U.S.). Acoustics Facility; United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy

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Integrated Noise Model (INM), version 5.1 : technical manual

1997-12-01
By Fleming, Gregg G. ; Olmstead, J. R. ; D'Aprile, J. ; ...

[PDF-355.24 KB]

English

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Details:

Alternative Title:

INM 5.1 technical manual
Creators:

Fleming, Gregg G. ; Olmstead, J. R. ; D'Aprile, J. ; Gerbi, P. ; Gulding, J. ; ... More +

Fleming, Gregg G. ; Olmstead, J. R. ; D'Aprile, J. ; Gerbi, P. ; Gulding, J. ; Plante, J. A. Less -
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

John A. Volpe National Transportation Systems Center (U.S.). Acoustics Facility ; United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy Less -
Subject/TRT Terms:

[+]

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

FAA-AEE-97-04
Resource Type:

Manual
Edition:

Final Jan 93 - Dec 97
Corporate Publisher:

United States. Department of Transportation. Federal Aviation Administration
Abstract:

The Federal Aviation Administration, Office of Environment and Energy (FAA, AEE-120)

has developed Version 5.1 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.

The Technical Manual for INM 5.1 describes the flight-path methodology (Chapter 2),

along with the basic methodology employed by the INM to compute a noise-level or timeabove

metric at a single, user-specified observer, or at an evenly-spaced, regular grid

of observers (Chapter 3).

The noise/time computation methodology is presented in a concise step-by-step fashion,

and includes a description of: (1) the computation of the flight-segment geometric and

physical parameters; (2) the flight-segment noise-level interpolation process; (3) the

acoustic impedance adjustment; (4) the flight-segment noise-fraction adjustment for

exposure-based metrics; (5) the airspeed adjustment for exposure-based metrics; (6) the

lateral attenuation adjustment; (7) the ground-based directivity adjustment for

observers behind start-of-takeoff-roll, as well as for computing metrics associated

with runup operations; (8) the metric computation process; and (9) the development of a

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

contours (Chapter 4).
Format:

PDF
Funding:

FA765/A7012 ; DTFA01-93-C-00078, Task Orders 9,14,19

FA765/A7012 ; DTFA01-93-C-00078, Task Orders 9,14,19 Less -
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:88e73fcecfaa25775d0deeff59c335b9398becb3dc13ac65a6504f00da942c6f
Download URL:

https://rosap.ntl.bts.gov/view/dot/8962/dot_8962_DS1.pdf
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Integrated Noise Model (INM), version 5.1 : technical manual

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