Integrated Noise Model Version 6.2

INM Version 6.2 includes several changes related to aircraft noise/performance for commercial aircraft and the modeling of aviation noise over national parks. These changes are based on research both in the United States and internationally.

New Features
INM Version 6.2 includes the following new features:

Two new noise metrics for noise modeling for US National Parks: Time Audible (TAUD), and Change in Exposure (delta dose or DDOSE)
Ambient screening capability
Ability to account for attenuation due to Line-of-sight blockage from terrain features
Support for two new terrain data types: higher resolution GridFloat and Digital Elevation Model (DEM) data
Ability to turn off lateral attenuation for helicopter and propeller aircraft, in order to model propagation over acoustically hard surfaces such as water or rocks
Ability to export noise contours and other visual layers to MapInfo Data Interchange Format files that can be read by MapInfo Professional and other GIS programs
Ability to limit acoustic computations to locations contained within a user-defined geographic boundary

Database Updates and Changes
Numerous aircraft noise/performance changes have been incorporated into INM Version 6.2. Five new fixed-wing aircraft have been added to the aircraft database, including:

Piper PA28-161 Warrior (PA28)
Piper PA30 Twin Comanche (PA30)
Piper PA31-350 Navajo Chieftain (PA31)
Maule M-7-235C (M7235C)
Raytheon Beech 1900D (1900D)

Data for three new helicopters have been added to the HeloExample study distributed with the INM, including:

Eurocopter EC-130 (EC130)
Robinson R-22 (R22)
MD600N (MD600)

INM Version 6.2 also includes updated data for the following Boeing aircraft:

737-300 with CFM56-3B-1 engines (737300)
737-300 with CFM56-3B-2 engines (7373B2)
737-400 with CFM56-3C-1 engines (737400)
737-500 with CFM56-3B-1 engines (737500)
737-700 with CFM56-7B engines (737700)
747-400 with PW4056 engines (747400)
757-200 with PW2037 engines (757PW)
757-200 with RB211-535E4 engines (757RR)
777-200 with GE90-90B engines (777200)

Several fixed-point approach profiles were also modified, in order to bring them into conformance with the INM method of modeling touchdown and reverse thrust.

Previous Versions
INM Version 6.2, released May 22, 2006, is a software update to Version 6.1. You must already have INM Version 6.0, 6.0a, 6.0b, 6.0c or 6.1 to use this software update. If you do not have one of these previous versions, you can order INM Version 6.2 with the INM 6.2 order form (PDF)

The 6.0 User’s Guide (9/1999) and the 6.0 Technical Manual (1/2002) are the current manuals for INM Version 6.2. Release notes inm60a.pdf (5/2000), inm60b.pdf (1/2001), inm60c.pdf (9/2001), Inm61.pdf (02/2003), and Inm62.pdf (05/2006) document changes to INM after these manuals were published.

The files below comprise the INM Version 6.2 update, installation instructions, and order form.