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Integrated Noise Model (INM)

INM Version 7.0a includes updates to noise/performance data for commercial aircraft, updates to substitution aircraft data, and corrections to minor software issues.

Database Updates and Changes

INM Version 7.0a includes new noise and flight performance data for the first Very Light Jet (VLJ) to be added to the INM database: the Cessna Mustang Model 510 with PW615F engines (CNA510).

Minor corrections were also made to the data for several existing aircraft for INM Version 7.0a, including:

Profile weight for the A319-131 STANDARD approach profile;
Data for Spectral Class 110; and
Level noise adjustment coefficients (B0, B1, and B2 for each of the Left, Center and Right NPDs) for the MD600N.

INM 7.0a also includes several updates to substitution aircraft data:

A new entry for the T-6 Texan (T6) which is substituted with the GASEPV;
The existing Piper PA-31 Chieftain (PA31CH) is now substituted with the PA31; and
The existing Piper PA-39 Twin Comanche C/R (PA39) is now substituted with the PA30.

Corrections

INM Version 7.0a corrects minor issues related to differences between runway end and airport elevations, behind start of takeoff roll directivity, version conversion for metric INM studies, and the handling of reference speeds for helicopter Noise Power Distance (NPD) curves. These and other corrections are further clarified in the INM 7.0a Release Notes.

Previous Versions of INM

INM 7.0a, released on September 17, 2008, is a free update to INM 7.0. You must already have INM 7.0 installed to use this update. If you do not already have the previous version, you can order a complete software package using the INM 7.0a Order Form available below. The INM 7.0 User's Guide and Technical Manual are the current manuals for INM 7.0a.

The files below comprise the INM Version 7.0a update, installation instructions, and order form.

Release Notes of Previous Versions of INM

7.0 (April 30, 2007)
6.2a (November 30, 2006)
6.2 (May 22, 2006)
6.1 (March 4, 2003)
6.0c (September 21, 2001)
6.0b (January 16, 2001)
6.0a (May 19, 2000)
6.0 (September 30, 1999)

Helicopter Modeling

Prior to the release of INM Version 7.0, helicopter noise impacts in the vicinity of terminal operations were modeled with the HNM. Current helicopter noise assessments should be conducted with INM Version 7.0a.