The University of Dublin | Trinity College -- Ollscoil Átha Cliath | Coláiste na Tríonóide
Trinity's Access to Research Archive
Home :: Log In :: Submit :: Alerts ::

TARA >
School of Engineering >
Mechanical & Manufacturing Eng >
Mechanical & Manufacturing Eng (Scholarly Publications) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/39636

Title: TEENI-Turboshaft Engine Exhaust Noise Identification
Other Titles: TCD-UCD Engineering Design Innovation Research Event
Author: BENNETT, GARETH
Sponsor: 
Name Grant Number
212367

Author's Homepage: http://people.tcd.ie/bennettg
Keywords: Acoustics
Turbomachinery
Turboshaft
Noise Source Identification
FP7
Broadband Noise
Issue Date: 2010
Citation: Gareth J. Bennett, Ian Davis, TEENI-Turboshaft Engine Exhaust Noise Identification, TCD-UCD Engineering Design Innovation Research Event, Trinity College, Foster Place, Dublin 2, 27th April 2010, Prof. Brian Broderick, Prof. Michael Gilchrist, 2010
Abstract: The TEENI project is an FP7 level 1 (Theme 7 – Transport) 1st Call EU-funded project. It focuses on Helicopter Engine Exhaust Broadband Noise, and tries to identify the origin of this noise from external measurements only. The project was launched on 1 April 2008 and will last 3 years. TEENI, a collaborative project, has EU funding of 3.3M€ with 11 partners. Unlike Turbojet engines, Turboshaft engine gases are ejected at low speeds, leading to almost no jet noise. Although the turbines generate high amplitude tonal nose, their high RPM and blade count result in the frequencies being above the audible threshold. However, a previous European project: Friendcopter has demonstrated through flight tests the significance of medium-frequency exhaust engine noise for the Take-Off flight certification condition. The origin and generation mechanisms of this exhaust broadband noise “Corenoise” – figure 1, have not yet been fully defined: low frequency content is generally related to combustion phenomena in the literature, but the sources above 1kHz are not understood. Understanding the origin (location and physical mechanisms) of this broadband noise range is the main objective of the TEENI project, with the final industrial goal being to better attenuate this exhaust noise.
Description: PUBLISHED
Trinity College, Foster Place, Dublin 2
URI: http://hdl.handle.net/2262/39636
Access: OpenAccess
Appears in Collections:Mechanical & Manufacturing Eng (Scholarly Publications)

Files in This Item:

File Description SizeFormat
TEENI.pdf87.85 kBAdobe PDFView/Open


This item is protected by original copyright


Please note: There is a known bug in some browsers that causes an error when a user tries to view large pdf file within the browser window. If you receive the message "The file is damaged and could not be repaired", please try one of the solutions linked below based on the browser you are using.

Items in TARA are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback