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Accession Number N20120012957
Title Assessment of NASA's Aircraft Noise Prediction Capability.
Publication Date Jul 2012
Media Count 392p
Personal Author M. D. Dahl
Abstract A goal of NASA s Fundamental Aeronautics Program is the improvement of aircraft noise prediction. This document provides an assessment, conducted from 2006 to 2009, on the current state of the art for aircraft noise prediction by carefully analyzing the results from prediction tools and from the experimental databases to determine errors and uncertainties and compare results to validate the predictions. The error analysis is included for both the predictions and the experimental data and helps identify where improvements are required. This study is restricted to prediction methods and databases developed or sponsored by NASA, although in many cases they represent the current state of the art for industry. The present document begins with an introduction giving a general background for and a discussion on the process of this assessment followed by eight chapters covering topics at both the system and the component levels. The topic areas, each with multiple contributors, are aircraft system noise, engine system noise, airframe noise, fan noise, liner physics, duct acoustics, jet noise, and propulsion airframe aeroacoustics.
Keywords Acoustic ducts
Aircraft noise
Boeing 737 aircraft
Computational fluid dynamics
Computerized simulation
Data bases
Error analysis
Fan blades
Hypersonic aircraft
Jet aircraft noise
Landing gear
Noise prediction(Aircraft)
Propulsion system performance
Rotary wing aircraft
Sensitivity analysis
Subsonic aircraft
Supersonic aircraft
Wind tunnel tests

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 46A - Acoustics
68B - Noise Pollution & Control
51C - Aircraft
Corporate Author National Aeronautics and Space Administration, Cleveland, OH. NASA John H. Glenn Research Center at Lewis Field.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1303
Contract Number N/A

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