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Implications of Conical Flow for Laminar Wing Design and Analysis

Streit, Thomas and Wichmann, Georg and von Knoblauch zu Hatzbach, Fedime and Campbell, Richard L. (2011) Implications of Conical Flow for Laminar Wing Design and Analysis. 29th AIAA Applied Aerodynamics Conference, 27 - 30 June 2011, Honolulu, Hawaii, USA.

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In this work a method based on sectional conical wings is presented which allows the analysis and design of airfoil sections for swept tapered wings with a computational effort which is slightly higher than a 2D computation. Navier-Stokes analysis and re-design examples using the sectional conical wing approximation are given. They show that pressure distribution, boundary layer stability analysis and designed airfoil geometry compare better with the 3D swept tapered wing solution than results obtained using solutions based on infinite swept wing theory. In the second part of the work the transversal flow incompressible solution for a conical wing with circular airfoil section is given. For small cone angles sectional conical solutions are obtained. The crossflow instability significant stagnation line velocity is obtained. It corresponds to an effective leading edge sweep angle which is twice the cone angle. An extension of this equation is obtained and verified for usual transport aircraft 3D wings by parametric studies varying airfoil section, root to tip thickness and leading edge radius.

Item URL in elib:https://elib.dlr.de/74450/
Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:AIAA 2011-3808
Title:Implications of Conical Flow for Laminar Wing Design and Analysis
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Streit, Thomasth.streit (at) dlr.deUNSPECIFIED
Wichmann, Georggeorg.wichmann (at) dlr.deUNSPECIFIED
von Knoblauch zu Hatzbach, Fedimefedime.knoblauch (at) dlr.deUNSPECIFIED
Campbell, Richard L.NASA, Langley Research CenterUNSPECIFIED
Date:June 2011
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Natural laminar flow, tapered wing, transonic flow, effective sweep angles, conical method, 2.75D and 2.5D CFD RANS solutions, inverse design, airfoils and wings
Event Title:29th AIAA Applied Aerodynamics Conference
Event Location:Honolulu, Hawaii, USA
Event Type:international Conference
Event Dates:27 - 30 June 2011
Organizer:AIAA (American Institute of Aeronautics and Astronautics)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Streit, Dr.rer.nat. Thomas
Deposited On:24 Jan 2012 10:04
Last Modified:12 Dec 2013 21:35

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