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Natural laminar flow leading edge: Requirements, design, and experimental validation under operational loads

Steffen, Olaf und Meyer, Patrick und Hühne, Christian (2024) Natural laminar flow leading edge: Requirements, design, and experimental validation under operational loads. Aerospace Science and Technology (146). Elsevier. doi: 10.1016/j.ast.2024.108913. ISSN 1270-9638.

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Offizielle URL: https://www.sciencedirect.com/science/article/pii/S1270963824000464

Kurzfassung

To unlock the potential of natural laminar flow aircraft wings, novel structural designs are necessary for the wing leading edge and its attachment. Those designs may not impinge on operability and maintenance of the aircraft. This paper presents a leading edge and attachment design for the natural laminar flow environment as well as the testing of this design on a large-scale ground-based demonstrator. The leading edge design is numerically verified by considering operational loads. For operational viability, the replacement of damaged leading edges without alterations to the spare part is desirable. In a series of tests, such interchange trials are made with two Image 1 full complexity leading edge segments and the aerodynamic step height at the interface of leading edge and wing cover is assessed in both ground and cruise deformation. The leading edge design and its attachment concept were proven to support natural laminar flow step height requirements even under global part deformations of a multi-material structure under thermal loading both numerically and experimentally. Interchangeability of the leading edge is demonstrated with very low mean variation in step height between different installations.

elib-URL des Eintrags:https://elib.dlr.de/202609/
Dokumentart:Zeitschriftenbeitrag
Zusätzliche Informationen:Clean Sky 2 Airframe ITD NACOR WP 2.3.1 Airframe Demonstrator D3-9
Titel:Natural laminar flow leading edge: Requirements, design, and experimental validation under operational loads
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Steffen, Olafolaf.steffen (at) dlr.dehttps://orcid.org/0000-0001-7838-1219NICHT SPEZIFIZIERT
Meyer, Patrickpat.meyer (at) tu-braunschweig.dehttps://orcid.org/0000-0001-7308-5138NICHT SPEZIFIZIERT
Hühne, ChristianChristian.Huehne (at) dlr.dehttps://orcid.org/0000-0002-2218-1223152361562
Datum:27 Januar 2024
Erschienen in:Aerospace Science and Technology
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
DOI:10.1016/j.ast.2024.108913
Verlag:Elsevier
ISSN:1270-9638
Status:veröffentlicht
Stichwörter:natural laminar flow large-scale testing wing design wing leading edge laminar flow wing aircraft operation
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Komponenten und Systeme
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L CS - Komponenten und Systeme
DLR - Teilgebiet (Projekt, Vorhaben):L - Strukturwerkstoffe und Bauweisen
Standort: Braunschweig
Institute & Einrichtungen:Institut für Systemleichtbau
Institut für Systemleichtbau > Funktionsleichtbau
Hinterlegt von: Steffen, Olaf
Hinterlegt am:05 Feb 2024 06:57
Letzte Änderung:06 Feb 2024 12:33

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