Development of an improved core noise prediction method for long-cowl engines
Development of an improved core noise prediction method for long-cowl engines
This paper describes the process of developing an improved method to predict the core noise radiated by long-cowl engines under static and flight conditions. The proposed method follows the same approach as the industry standard SAE ARP 876 method in terms of structure and source model, but uses: (1) a new, analytical frequency-dependent directivity accounting for radiation, convection and refraction effects through the jet and (2) a new empirical source spectrum determined using a source breakdown code applied to external phased array data acquired on a Rolls-Royce BR700-type engine.
American Institute of Aeronautics and Astronautics
Ekoule, Celia M.
f9e99432-8087-474e-a48d-786d9a3d07e4
Tester, Brian J.
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Funke, Stefan
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Richter, Christoph
b59e71a0-600c-44f8-a7fc-76fb88ed4d23
2018
Ekoule, Celia M.
f9e99432-8087-474e-a48d-786d9a3d07e4
Tester, Brian J.
1bd4a793-131b-4173-93cc-3eca70b2d116
Funke, Stefan
02277a65-d875-483e-af18-fd061a2ca93b
Richter, Christoph
b59e71a0-600c-44f8-a7fc-76fb88ed4d23
Ekoule, Celia M., Tester, Brian J., Funke, Stefan and Richter, Christoph
(2018)
Development of an improved core noise prediction method for long-cowl engines.
In 2018 AIAA/CEAS Aeroacoustics Conference.
American Institute of Aeronautics and Astronautics..
Record type:
Conference or Workshop Item
(Paper)
Abstract
This paper describes the process of developing an improved method to predict the core noise radiated by long-cowl engines under static and flight conditions. The proposed method follows the same approach as the industry standard SAE ARP 876 method in terms of structure and source model, but uses: (1) a new, analytical frequency-dependent directivity accounting for radiation, convection and refraction effects through the jet and (2) a new empirical source spectrum determined using a source breakdown code applied to external phased array data acquired on a Rolls-Royce BR700-type engine.
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Published date: 2018
Venue - Dates:
AIAA/CEAS Aeroacoustics Conference, 2018, , Atlanta, United States, 2018-06-25 - 2018-06-29
Identifiers
Local EPrints ID: 424582
URI: http://eprints.soton.ac.uk/id/eprint/424582
PURE UUID: d46cc628-6f52-4ceb-b7c7-fc646475e406
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Date deposited: 05 Oct 2018 11:38
Last modified: 04 Mar 2024 18:18
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Contributors
Author:
Celia M. Ekoule
Author:
Brian J. Tester
Author:
Stefan Funke
Author:
Christoph Richter
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