A Software Tool for Improved Noise Source Identification and Understanding, Phase I

Metadata Updated: May 2, 2019

Innovative Technology Applications Company and Drs. P. Morris and K. Brentner will make improvements in noise prediction and measurement methods for subsonic and supersonic vehicles. Possible areas of application for the finished product include aerodynamic noise from fans, jets, turbomachinery, engine cores, propfans, propellers, and airframe components. The proposed Phase I work will result in a proof-of-concept demonstration of a tool which will enable the NASA customer to gain deeper insight into aerodynamic noise sources and develop improved methods for experimentally detecting them. Ultimately, this will enable improved source identification techniques and greater understanding of the physics associated with the data obtained from experimental phased array microphone arrays. The approach taken by the proposed work to accomplish these goals is to use an unsteady simulation of nearfield unsteady flow to feed a Ffowcs Williams-Hawking solver. The acoustic field is then propagated to a numerical phased array of microphones and the data recorded just as it would in a wind tunnel or flyover experiment. The data is then processed according to the state-of-the-art data reduction methods and the resulting predictions of noise sources compared to the detailed data from the unsteady simulation to gain additional insight.

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_9051
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id e1c8be19-fbb1-4791-b326-dbaf02cfc0f1
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2010-07-01
Homepage URL https://techport.nasa.gov/view/9051
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 7911d5f9ca569b8733741016f075e562db603015
Source Schema Version 1.1

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