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.
Assessment of NASA's Aircraft Noise Prediction Capability
2012
392 pages
Report
Keine Angabe
Englisch
Acoustics , Noise Pollution & Control , Aircraft , Aeroacoustics , Noise prediction(Aircraft) , Jet aircraft noise , Wind tunnel tests , Hypersonic aircraft , Supersonic aircraft , Subsonic aircraft , Rotary wing aircraft , Computational fluid dynamics , Aircraft noise , Airframes , Fan blades , Acoustic ducts , Propulsion system performance , Sensitivity analysis , Error analysis , Computerized simulation , Data bases , Boeing 737 aircraft , Landing gear
A Process for Assessing NASA's Capability in Aircraft Noise Prediction Technology
British Library Conference Proceedings | 2008
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