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Evaluation of Ultra-High Bypass Ratio Engines for an Over-Wing Aircraft Configuration

Giesecke, Daniel und Lehmler, Marcel und Friedrichs, Jens und Blinstrub, Jason und Bertsch, Lothar und Heinze, Wolfgang (2018) Evaluation of Ultra-High Bypass Ratio Engines for an Over-Wing Aircraft Configuration. Journal of the Global Power and Propulsion Society, 2, Seiten 493-515. Global Power and Propulsion Society. doi: 10.22261/JGPPS.8SHP7K. ISSN 2515-3080.

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Offizielle URL: https://www.gppsjournal.org/journals/journal-of-the-global-power-and-propulsion-society/uhbr-engines-for-an-over-wing-aircraft-configuration/

Kurzfassung

Today, main hub airports are already at their capacity limit and hence, smaller airports get more interesting to provide point-to-point connections. Unfortunately, the use of regional airports induces an increased environmental footprint for the population living around it. In an attempt to solve the related problems, unconventional aircraft and engine designs are required. The research project Coordinated Research Centre 880 aims at examing the fundamentals of a single-aisle aircraft powered by two geared ultra-high bypass turbofan engines mounted over the wing. Low direct operating costs, noise shielding due to the over-wing configuration, and short runway lengths are the main advantages of such an aircraft. Highlighting the performance, economical and noise benefits of a geared ultra-high bypass engine is the key aim of this paper. This assessment includes a correspondingly adjusted aircraft. Open literature values are applied to design the two investigated bypass ratios; an engine with a bypass ratio of 5 respectively 17. Furthermore, a variable bypass nozzle area for the ultra-high bypass ratio engine is analyzed. Finally, the three engines are evaluated based on aircraft direct operating costs and an initial engine noise assessment. This study concludes that increasing the bypass ratio from 5 to 17 drops the direct operating costs by 5.6% and can reduce the sound at the source for a selected operating condition by up to 7dB. During the different flight phases the reduction in specific fuel consumption ranges between 18% to 40%. Applying a variable bypass nozzle leads to a further decrease by 0.6% for the direct operating costs. Opening the bypass nozzle during several flight phases stabilizes the fan shown by the surge margin increase. It is concluded that this unconventional aircraft configuration with ultra-high bypass ratio engines mounted over the wing has the potential to relieve main hub airports by also reducing the environmental impact.

elib-URL des Eintrags:https://elib.dlr.de/114429/
Dokumentart:Zeitschriftenbeitrag
Titel:Evaluation of Ultra-High Bypass Ratio Engines for an Over-Wing Aircraft Configuration
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Giesecke, DanielIFAS, TU BraunschweigNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Lehmler, MarcelIFAS, TU BraunschweigNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Friedrichs, JensIFAS, TU BraunschweigNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Blinstrub, Jasonjason.blinstrub (at) dlr.dehttps://orcid.org/0000-0003-1913-0529148013630
Bertsch, LotharLothar.Bertsch (at) dlr.dehttps://orcid.org/0000-0003-2780-2858NICHT SPEZIFIZIERT
Heinze, WolfgangIFL, TU BraunschweigNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:17 Oktober 2018
Erschienen in:Journal of the Global Power and Propulsion Society
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Nein
In ISI Web of Science:Ja
Band:2
DOI:10.22261/JGPPS.8SHP7K
Seitenbereich:Seiten 493-515
Verlag:Global Power and Propulsion Society
ISSN:2515-3080
Status:veröffentlicht
Stichwörter:PANAM, SHADOW, UHBR, engine design, aircraft design, SFB880
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: Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Hubschrauber, GO
Hinterlegt von: Winkels, Elisabeth
Hinterlegt am:01 Nov 2018 12:54
Letzte Änderung:04 Dez 2023 11:09

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