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Impact of Defects and Damage in Aircraft Engines on the Exhaust Jet

Adamczuk, Rafael R. and Buske, Clemens and Röhle, Ingo and Hennecke, Christoph and Dinkelacker, Friedrich and Seume, Joerg R. (2013) Impact of Defects and Damage in Aircraft Engines on the Exhaust Jet. ASME Turbo Expo 2013, 2013-06-03 - 2013-06-07, San Antonio, TX, USA. doi: 10.1115/GT2013-95079. ISBN 978-0-7918-5513-3.

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The inspection of aero engines is a complex and timeconsuming process, often requiring the disassembling of the engine or boroscopic examinations. The development of a method to locate and characterize defects and damage at an early stage, without disassembling the engine would accelerate the inspection process. For that purpose, the spatial density distribution pattern of the exhaust jet of aircraft engines may be measured with the Background Oriented Schlieren method (BOS). The hypothesis is that defects in the hot gas path have a noticeable impact on the density pattern of the exhaust jet. To establish the connection between defects and measurable patterns, in the present paper numerical simulations of an aero engine are performed including three potential defects. Non-uniformities resulting from a burner malfunction, the increase of the radial gap between blade tip and casing as well as burned trailing edges are propagated with only small degree of dispersion through the turbine and reach the engine exit. The paper shows that each considered defect results in a different exhaust density pattern.

Item URL in elib:https://elib.dlr.de/83097/
Document Type:Conference or Workshop Item (Speech)
Title:Impact of Defects and Damage in Aircraft Engines on the Exhaust Jet
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Adamczuk, Rafael R.Leibniz Universität Hannover, TFDUNSPECIFIEDUNSPECIFIED
Buske, ClemensUNSPECIFIEDhttps://orcid.org/0000-0003-4157-7415UNSPECIFIED
Hennecke, ChristophLeibniz Universität Hannover, ITVUNSPECIFIEDUNSPECIFIED
Dinkelacker, FriedrichLeibniz Universität Hannover, ITVUNSPECIFIEDUNSPECIFIED
Seume, Joerg R.Leibniz Universität Hannover, TFDUNSPECIFIEDUNSPECIFIED
Date:June 2013
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:V002T01A021
Keywords:MRO, background oriented schlieren, detection turbine combustor defects, trailing edge, tip clerance gap, CFD
Event Title:ASME Turbo Expo 2013
Event Location:San Antonio, TX, USA
Event Type:international Conference
Event Start Date:3 June 2013
Event End Date:7 June 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old), Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research, L ER - Engine Research
DLR - Research theme (Project):L - Simulation & Validation (old), L - Turbine Technologies (old)
Location: Göttingen
Institutes and Institutions:Institute of Propulsion Technology > Turbine
Deposited By: Grunwitz, Dr.-Ing. Clemens
Deposited On:09 Jul 2013 07:40
Last Modified:24 Apr 2024 19:49

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