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PLR and take-off speed implications on noise contours and local gaseous emissions for SST business jet concept aircraft

Bertsch, Lothar und Plohr, Martin und Nöding, Michel (2024) PLR and take-off speed implications on noise contours and local gaseous emissions for SST business jet concept aircraft. In: Internoise Conference 2024. Internoise Conference 2024, 2024-08-25 - 2024-08-29, Nantes, Frankreich.

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Offizielle URL: https://internoise2024.org/

Kurzfassung

DLR has established a simulation process to evaluate the landing and take-off of novel civil supersonic transport (SST) aircraft. This process was applied to two business jet concept aircraft in order to assess the certification noise levels according to novel regulations under discussion at ICAO CAEP. It has to be noted, that neither of the two concept aircraft is optimized for low noise nor for low boom. Modifications to the take-off and landing procedures are under discussion at ICAO CAEP to adjust these certification noise regulations and to ultimately meet the defined limits. At DLR, modifications to departure flight procedures are under investigation, i.e., an automated thrust reduction referred to as Programmed Lapse Rate (PLR [%]) and an increased take-off speed (V2 + X [kts]). These measures as proposed by NASA promise to reduce the certification noise levels for the two departure locations. For the two considered concept aircraft, promising procedures with reduced noise at the certification locations have been identified previously. This paper now addresses the impact of these promising departure procedures on noise contour areas and local gaseous emissions. In contrast to this study, the focus of previous work lied on departure certification noise levels only, i.e., the levels at sideline (EPNLsl ), flyover (EPNLf l ), and its cumulative sum (EPNLcum,dep). Impact on EPNL and SEL contours is now specifically evaluated. Furthermore, the differences in fuel flow, CO2, and NOX are assessed along the simulated departure flights. It is demonstrated, that the proposed measures to the departure procedures do not only reduce noise at the certification locations but have an advantageous effect on noise contour areas and gaseous pollutants. The study was performed in context of DLR’s activities in ICAO CAEP in order to support ongoing technical discussions on certification regulations for novel SST aircraft.

elib-URL des Eintrags:https://elib.dlr.de/203952/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:PLR and take-off speed implications on noise contours and local gaseous emissions for SST business jet concept aircraft
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Bertsch, LotharLothar.Bertsch (at) dlr.dehttps://orcid.org/0000-0003-2780-2858NICHT SPEZIFIZIERT
Plohr, MartinMartin.Plohr (at) dlr.dehttps://orcid.org/0000-0002-6165-0838NICHT SPEZIFIZIERT
Nöding, MichelMichel.Noeding (at) dlr.dehttps://orcid.org/0000-0002-4051-1257167660652
Datum:29 August 2024
Erschienen in:Internoise Conference 2024
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:aircraft noise, noise prediction, PANAM
Veranstaltungstitel:Internoise Conference 2024
Veranstaltungsort:Nantes, Frankreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:25 August 2024
Veranstaltungsende:29 August 2024
Veranstalter :i-ince / sfa
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Effizientes Luftfahrzeug
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L EV - Effizientes Luftfahrzeug
DLR - Teilgebiet (Projekt, Vorhaben):L - Virtuelles Flugzeug und Validierung
Standort: Göttingen , Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Hubschrauber, GO
Institut für Antriebstechnik > Triebwerk
Hinterlegt von: Koch, Bianca
Hinterlegt am:17 Sep 2024 12:54
Letzte Änderung:08 Nov 2024 14:03

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