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The DLR Project LamAiR: Design of a NLF Forward Swept Wing for Short and Medium Range Transport Application

Seitz, Arne und Kruse, Martin und Wunderlich, Tobias und Bold, Jens und Heinrich, Lars (2011) The DLR Project LamAiR: Design of a NLF Forward Swept Wing for Short and Medium Range Transport Application. 29th AIAA Applied Aerodynamics Conference, 27.-30. Juni 2011, Hawaii, USA.

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Kurzfassung

The LamAiR (Laminar Aircraft Research) project deals with the design of a laminar wing for short and medium range transport aircraft operated in the transonic regime. It is well known that extensive laminar flow on wings of such aircraft still can be achieved by natural means, i.e. solely by contour shaping of the airfoil sections. But with Reynolds numbers being in the order of 25 millions in cruise condition the leading edge sweep of the wing should not be higher than approximately 20deg in order to limit the growth of cross-flow instabilities and, hence, prevent early transition. Consequently, the design cruise Mach number for laminar wings of conventionally aft-swept configurations cannot exceed values of about 0.75 and it is expected that the high-speed off-design performance is rather poor. Within the DLR project LamAiR it is therefore investigated if these aerodynamic shortcomings can be overcome by employing forward sweep in combination with aeroelas-tic tailoring using CFRP (Carbon Fiber Reinforced Plastics) materials. In particular the goal is to design a forward swept laminar wing having a design Mach number of 0.78 and the capability of reaching Mach 0.80 in high-speed off-design. The present paper gives an overview on the current status of the project as well as prospects for future work.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:The DLR Project LamAiR: Design of a NLF Forward Swept Wing for Short and Medium Range Transport Application
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Seitz, ArneDLR AS
Kruse, MartinDLR AS
Wunderlich, TobiasDLR AS
Bold, JensDLR FA
Heinrich, LarsDLR FA
Datum:Juni 2011
Referierte Publikation:Nein
In ISI Web of Science:Nein
Name der Reihe:AIAA Conference Paper
Status:veröffentlicht
Stichwörter:laminar flow, forward swept wing, transport aircraft, aeroelastic tailoring
Veranstaltungstitel:29th AIAA Applied Aerodynamics Conference
Veranstaltungsort:Hawaii, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:27.-30. Juni 2011
Veranstalter :AIAA, American Institute of Aeronautics and Astronautics
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:keine Zuordnung
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):L -- keine Zuordnung
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik > Funktionsleichtbau
Institut für Aerodynamik und Strömungstechnik > Konfigurativer Entwurf
Hinterlegt von: Dr.-Ing. Arne Seitz
Hinterlegt am:25 Jan 2012 09:50
Letzte Änderung:12 Dez 2013 21:35

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