elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Aerodynamic Design and Analysis of HLFC Wings within the European Project HLFC-WIN

Streit, Thomas und Kruse, Martin und Kilian, Thomas und Petropoulos, Ilias (2022) Aerodynamic Design and Analysis of HLFC Wings within the European Project HLFC-WIN. In: 33rd Congress of the International Council of the Aeronautical Sciences, ICAS 2022. 33rd Congress of the International Council of the Aeronautical Sciences (ICAS) 2022, 2022-09-04 - 2022-09-09, Stockholm, Schweden. ISSN 2958-4647.

[img] PDF
2MB

Offizielle URL: https://www.icas.org/ICAS_ARCHIVE/ICAS2022/data/preview/ICAS2022_0155.htm

Kurzfassung

Results for the numerical aerodynamic design and analysis of a long-range, large passenger aircraft equipped with a Hybrid Laminar Flow Control (HLFC) system are presented. This work was performed within the European project HLFC-WIN. The reference geometry of this study is the long-range cruise Airbus research XRF1 geometry, designed for turbulent flow. The HLFC part of the wing is restricted to an outer wing region which extends from the engine mounting to the wing tip. To achieve laminar flow in the outer wing, nose suction panels are used and the wing shape is changed. The aerodynamic HLFC wing design is performed at different cruise flight conditions. It involves shape design and optimization of the suction distribution. The shape design was performed using the DLR 3D transonic inverse design code. Results for the shape design are presented for three geometries. The first one is a DLR redesign of an HLFC variant of the XRF1 aircraft designed by Airbus. This geometry is used for the HLFC-WIN ground base demonstrator. Design was performed at the cruise design point and for off-design conditions. This design presents two improvements in comparison to the initial geometry: a) an increased laminar extent for the cruise design point and b) an increased spanwise thickness distribution, which leads to a thickness distribution comparable to the reference geometry. A second HLFC design was performed which improved the cruise design point aerodynamic performance of the first design, also by reducing wave drag. In a third design it was shown that in the region of the outermost suction panel a natural laminar flow (NLF) design was possible by using for the nose a crossflow attenuated NLF (CATNLF) strategy. The shape design was performed on simplified geometries. For final shape designs complete configuration CFD solutions were obtained using the TAU RANS solver of DLR. The aerodynamic performance of the different HLFC geometries was assessed by using the ffd72 far-field drag analysis software of ONERA for these solutions. In the shape design a generalized suction distribution based on the suction distribution of the Airbus HLFC design was used. After the shape design, the suction distribution was optimized for the GBD-DLR-2 design in order to minimize the suction power. A novel combined approach of variable porosity outer skin and suction chambers was introduced. In addition to the design and analysis of the HLFC geometries this work also describes extensions of the numerical methods used to predict the transition line position in the case of boundary layer suction. The physical representation of surface suction was improved by implementing and testing a direct suction boundary in the TAU solver.

elib-URL des Eintrags:https://elib.dlr.de/194170/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Aerodynamic Design and Analysis of HLFC Wings within the European Project HLFC-WIN
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Streit, ThomasTh.Streit (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Kruse, MartinMartin.Kruse (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Kilian, ThomasThomas.Kilian (at) dlr.dehttps://orcid.org/0000-0003-1395-608XNICHT SPEZIFIZIERT
Petropoulos, IliasOneraNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:September 2022
Erschienen in:33rd Congress of the International Council of the Aeronautical Sciences, ICAS 2022
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
ISSN:2958-4647
Status:veröffentlicht
Stichwörter:Laminar technology HLFC and NLF, transonic inverse design, far-field drag analysis, suction optimization, RANS suction boundary condition
Veranstaltungstitel:33rd Congress of the International Council of the Aeronautical Sciences (ICAS) 2022
Veranstaltungsort:Stockholm, Schweden
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:4 September 2022
Veranstaltungsende:9 September 2022
Veranstalter :International Council of the Aeronautical Sciences (ICAS)
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 - Flugzeugtechnologien und Integration
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Transportflugzeuge
Hinterlegt von: Kilian, Thomas
Hinterlegt am:17 Mai 2023 11:22
Letzte Änderung:24 Apr 2024 20:54

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.