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Modeling of Wing Drag Reductions Due to Structural Dynamics in Atmospheric Gusts

Ironside, Daniel and Bramesfeld, Goetz and Schwochow, Jan (2010) Modeling of Wing Drag Reductions Due to Structural Dynamics in Atmospheric Gusts. AIAA 28th Applied Aerodynamics Conference, 28.Juni-1.Juli 2010, Chicago.

Full text not available from this repository.

Official URL: http://dx.doi.org/10.2514/6.2010-4683

Abstract

Recent research interests explore the use of the energy present in atmospheric gusts for drag reduction of small and medium sized uninhabited airborne vehicles. Many approaches use active control systems that detect and make use of energy is present in of atmospheric disturbances. A different, passive approach to make use of the energy of atmospheric gusts can be accomplished with an aircraft-wing structure whose structural dynamics are aeroelastically tailored. Previous studies have shown that significant drag reductions, up to 30 percent, are possible even with zero-mass net-motion gusts. However, due to simplified analysis, a detailed investigation is needed to justify these claims. Various responses were analyzed using coupled aerodynamic and structural dynamic simulations in drag reduction verification. The aerodynamic simulation is based on a potential flow model that uses distributed vorticity elements. The structural dynamic simulation uses an explicit finite difference numerical model of the coupled dynamics of the time-dependent Euler-Bernoulli equation for thin beams in non-symmetrical bending and the time-dependent torsion equation for non-circular cross-sections. The aerodynamic model uses distributed vorticity elements that model the bound circulation in a continuous fashion.

Item URL in elib:https://elib.dlr.de/82830/
Document Type:Conference or Workshop Item (Paper)
Title:Modeling of Wing Drag Reductions Due to Structural Dynamics in Atmospheric Gusts
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ironside, DanielI.D.UNSPECIFIED
Bramesfeld, Goetzgbramesf (at) slu.edu UNSPECIFIED
Schwochow, Janjan.schwochow (at) dlr.deUNSPECIFIED
Date:28 June 2010
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:aeroelastic tailoring, atmospheric gust, drag reduction
Event Title:AIAA 28th Applied Aerodynamics Conference
Event Location:Chicago
Event Type:international Conference
Event Dates:28.Juni-1.Juli 2010
Organizer:AIAA
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Schwochow, Jan
Deposited On:15 Jul 2013 15:34
Last Modified:15 Jul 2013 15:34

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