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. Federal Aviation Administration. Office of Environment and Energy ;
John A. Volpe National Transportation Systems Center (U.S.). Acoustics Facility ; United States. Federal Aviation Administration. Office of Environment and Energy ; Less -
Subject/TRT Terms:
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Airport Noise
Computer Model
Day-night Average Sound
INM
Integrated Noise Model
Level, Ldn, Heliport Noise Model, FAR Part 150
Noise-level Prediction, Noise-level Metric
Noise Contours
Computer Models
Heliports
Manuals
Measurement
Noise

Publication/ Report Number:
FAA-AEE-97-04 ;
Resource Type:
Manual ;
Edition:
Final Jan 93 - Dec 97
Corporate Publisher:
United States. Federal Aviation Administration ;
NTL Classification:
NTL-AVIATION-AVIATION ; NTL-AVIATION-Aviation Energy and Environment ; NTL-ENERGY AND ENVIRONMENT-Aviation Energy and Environment ;
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
Main Document Checksum:
[+]
urn:sha256:88e73fcecfaa25775d0deeff59c335b9398becb3dc13ac65a6504f00da942c6f
File Type:

Supporting Files

• No Additional Files

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