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System noise assessment of a tube-and-wing aircraft with geared turbofan engines

Bertsch, Lothar und Wolters, Florian und Heinze, Wolfgang und Pott-Pollenske, Michael und Blinstrub, Jason (2018) System noise assessment of a tube-and-wing aircraft with geared turbofan engines. In: 56th AIAA Aerospace Sciences Meeting. 2018 AIAA Science and Technology Forum and Exposition, 2018-01-08 - 2018-01-12, Kissimmee, Florida, USA. doi: 10.2514/6.2018-0264. ISBN 978-162410524-1.

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Offizielle URL: http://dx.doi.org/10.2514/6.2018-0264

Kurzfassung

The Airbus A320neo family and the Bombardier CSeries can come equipped with a geared turbofan of increased bypass ratio. Such an engine concept promises reduced engine noise generation if compared to conventional turbofan engines with lower bypass ratios. As a result, the dominance of other noise sources on-board of an aircraft with geared turbofan engines are emphasized and will become more relevant. Consequently, to get an understanding of the modified noise source ranking due to the new engine concept, a noise assessment of the overall aircraft noise as received on the ground is essential, i.e., a so called system noise assessment. For this study a DLR & TU Braunschweig aircraft design synthesis process with integrated noise prediction capabilities is applied. An interface to process external input data allows the implementation of high-fidelity simulation results for the geared engine concept into the overall simulation process, i.e. including all required engine parameters for the noise prediction. The focus lies on the comparison of existing engine concepts and their impact on the overall vehicle design, flight performance, and ultimately the system noise. The noise assessment is not limited to the overall vehicle noise as received on the ground but moreover the dominance and ranking of all individual noise sources is discussed. A direct comparison and evaluation of the flight performance and the system noise of the different vehicle variants under consideration is presented. Among the vehicle variants, one aircraft is adapted to better match the engine concept. A geared turbofan engine concept will come with an inherent and advantageous implication on the overall aircraft performance, i.e., reduced specific fuel consumption. Since such beneficial characteristics are identified in the simulation results, the overall vehicle design is consequently adapted to fully exploit these characteristics. Furthermore, several known measures to reduce the airframe noise contribution are simulated on board of the vehicles under consideration. The system noise assessment will identify the impact of these technologies on the overall aircraft noise for each variant. Finally, the geared turbofan engine is also installed on board of an earlier low-noise aircraft concept featuring engine noise shielding. The impact of the new engine in combination with shielding effects is assessed. It is demonstrated that the influence of low-noise airframe measures in combination with geared turbofan aircraft concept are promising, especially on an airframe architecture dedicated to engine noise shielding.

elib-URL des Eintrags:https://elib.dlr.de/118421/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:System noise assessment of a tube-and-wing aircraft with geared turbofan engines
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Bertsch, LotharLothar.Bertsch (at) dlr.dehttps://orcid.org/0000-0003-2780-2858NICHT SPEZIFIZIERT
Wolters, FlorianFlorian.Wolters (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Heinze, Wolfgangw.heinze (at) tu-bs.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Pott-Pollenske, Michaelmichael.pott-pollenske (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Blinstrub, Jasonjason.blinstrub (at) dlr.dehttps://orcid.org/0000-0003-1913-0529138926996
Datum:Januar 2018
Erschienen in:56th AIAA Aerospace Sciences Meeting
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Nein
DOI:10.2514/6.2018-0264
ISBN:978-162410524-1
Status:veröffentlicht
Stichwörter:aircraft noise prediction, PANAM, geared turbofan engine, aircraft design
Veranstaltungstitel:2018 AIAA Science and Technology Forum and Exposition
Veranstaltungsort:Kissimmee, Florida, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:8 Januar 2018
Veranstaltungsende:12 Januar 2018
Veranstalter :AIAA
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Simulation und Validierung (alt)
Standort: Braunschweig , Göttingen , Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Hubschrauber, GO
Institut für Antriebstechnik > Triebwerk
Institut für Aerodynamik und Strömungstechnik > Technische Akustik
Hinterlegt von: Bertsch, Dr.-Ing. Lothar
Hinterlegt am:29 Jan 2018 10:43
Letzte Änderung:24 Apr 2024 20:22

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