Details:

Creators:
Roof, C. J. ; Fleming, Gregg G. ; Rickley, Edward J. ; Reherman, Clay N ;
Roof, C. J. ; Fleming, Gregg G. ; Rickley, Edward J. ; Reherman, Clay N ; Less -
Corporate Creators:
John A. Volpe National Transportation Systems Center (U.S.) ;
Subject/TRT Terms:
[+]
Atmospheric Absorption
DBA
International Organization For Standardization
Noise Levels
One-thhird Octive Noise Spectra
Society Of Automotive Engineers (SAE)
Aircraft Noise
Alternatives Analysis
Atmospheric Phenomena
Helicopters
Measurement
Sensitivity Analysis
Sound Level
Standards

Publication/ Report Number:
DOT-VNTSC-FAA-05-09 ;
Resource Type:
Tech Report ;
Edition:
Final Report; January 2002 ¿ April 2002
Corporate Publisher:
United States. Federal Aviation Administration ;
NTL Classification:
NTL-AVIATION-AVIATION ; NTL-AVIATION-Aviation Energy and Environment ;
Abstract:
The Society of Automotive Engineers’ (SAE) Aerospace Recommended Practice (ARP) No. 866A (866A), and a procedure utilizing pure-tone absorption equations developed in support of the International Organization for Standardization’s (ISO) 9613-1 and the American National Standards Institute’s (ANSI) S1.26-1995, are compared and a sensitivity analysis undertaken. The ISO and ANSI equations are identical to each other. Thirteen takeoff and two approach spectra for aircraft were utilized in the analysis, as well as one takeoff, two approach, and three flyover spectra for helicopters. As-measured spectra were processed at 10 standard distances between 200 ft. and 25,000 ft., and at five different temperature/ relative humidity (RH) combinations, to generate adjusted spectra and associated LASmx values. The focus of the study is a refined version of the ISO/ANSI adjustment procedure developed specifically for application to one-third octave-level data.
Format:
PDF ;
Funding:
FA-53/BS232 ;
Collection(s):
Volpe
Main Document Checksum:
[+]
urn:sha256:ee0e29bf3f6335cf4369c296d56bdbe426d31df8d9862abfe851b27a5a7994be
File Type:

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