Accession Number : ADA255769


Title :   Air Force Procedure for Predicting Noise around Airbases: Noise Exposure Model (Noisemap) Technical Report


Descriptive Note : Rept. for Jan 1989-Mar 1992


Corporate Author : WYLE LABS EL SEGUNDO CA


Personal Author(s) : Moulton, Carey L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a255769.pdf


Report Date : May 1992


Pagination or Media Count : 161


Abstract : NOISEMAP was the name given to the original Fortran program, developed for the USAF in the mid 1970's to calculate total noise exposure around military airbases. NOISEMAP now refers to a suite of programs that automate the noise exposure calculation process from operations data collection to final contour plotting. The noise calculation part of this suite of programs is now called NMAP 6.1 (the 6.1 being the current version number). New algorithms for calculating lateral attenuation and an expanded database are included in this version 6.1. NOISEMAP has also been rehosted from operation on a CDC mainframe computer to run on a desktop microcomputer (IBM compatible). This report is a technical overview of the algorithms used in NMAP 6.1. Most of these algorithms were originally outlined by Dr William Galloway in the report 'Community Noise Exposure Resulting from Aircraft Operations: Technical Review' published in November 1974. This report covers all the current algorithms used in NMAP 6.1 and includes an example computation for a single aircraft takeoff and ground runup operation. Acoustics, Engine Noise, Noise Modeling, Sound, Community Noise Exposure, Aircraft Noise, Environmental Impact.


Descriptors :   *ALGORITHMS , *COMPUTERS , *AIRCRAFT NOISE , COMPUTER PROGRAMS , COMPUTATIONS , COMMUNITIES , FORTRAN , OPERATION , ATTENUATION , MICROCOMPUTERS , CONTOURS , PLOTTING , ENGINE NOISE , COLLECTION , NUMBERS , NOISE , ACOUSTICS , ENGINES , SOUND , ENVIRONMENTAL IMPACT , IMPACT , AIRCRAFT , DATA BASES


Subject Categories : Numerical Mathematics
      Computer Programming and Software
      Acoustics


Distribution Statement : APPROVED FOR PUBLIC RELEASE