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Parametric Design Study of Rigid Single Element Devices at High Speed and Aerodynamic Assessment at Low Speed Including Investigations on Moving Parts

Büscher, Alexander und Streit, Thomas (2005) Parametric Design Study of Rigid Single Element Devices at High Speed and Aerodynamic Assessment at Low Speed Including Investigations on Moving Parts. DLR-Interner Bericht. IB-124-2005/915.

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Kurzfassung

A parametric analysis of several types of rigid winglet geometries was cariied out at cruise condition using a rapid databased aerodynamic prediction method. The optimised configurations were obtained according to an effective drag approach, which takes into account aerodynamic improvements and structural penalties. The most promising device found was a highly swept, off-loaded anhedral wing tip device with a reduced chord length. For low speed assessment study, both clean and take-off configurations were used. The designed winglet has shown poor flow behaviour at low spped regime due to the design objetive at cruise. To improve the performance at low speed, moving parts and redesigned winglet airfoils were performed. The design study of both geometry modifications is described. The results obtained were confirmed by RANS computations. The resulting geometry provides great benefit at high and low speeds relative to the reference geometry. additionally, a brief design work of a conventional wing tip device was conducted to gain a better understanding of the benefit of the anhedral winglet. Finally, a wing tip shape study was carried out using a Shark winglet.

Dokumentart:Berichtsreihe (DLR-Interner Bericht)
Zusätzliche Informationen:Technical Report M-DAW, References MDAW-DLR-303-D032, M-DAW-TUB-306-D035
Titel:Parametric Design Study of Rigid Single Element Devices at High Speed and Aerodynamic Assessment at Low Speed Including Investigations on Moving Parts
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Büscher, AlexanderInstitute of Fluid Mechanics, Braunschweig Technical University
Streit, ThomasNICHT SPEZIFIZIERT
Datum:August 2005
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:M-DAW, wing tip device, winglet, design, assessment, novel device, anhedral
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Flugphysik
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Konfigurativer Entwurf
Hinterlegt von: Dr.rer.nat. Thomas Streit
Hinterlegt am:11 Jan 2007
Letzte Änderung:27 Apr 2009 13:24

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