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An Innovative Route from Wind Tunnel Experiments to Flight Dynamics Analysis for a Highly Swept Flying Wing

Schwithal, Jana and Rohlf, Detlef and Looye, Gertjan and Liersch, Carsten M. (2015) An Innovative Route from Wind Tunnel Experiments to Flight Dynamics Analysis for a Highly Swept Flying Wing. Deutscher Luft- und Raumfahrtkongress 2015, 22.-24. Sep. 2015, Rostock, Deutschland.

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A flying wing configuration with highly swept leading edges and low aspect ratio such as the generic UCAV configuration DLR-F19 is very attractive for military applications due to its very favorable stealth capabilities. As the assurance of good flying qualities, however, is a critical aspect for such a configuration, it should be considered early in the design process. This paper presents an innovative way to derive a flight dynamics model from wind tunnel experiments by applying a system identification approach, normally employed for flight test. This allows the modelling of nonlinear aerodynamic effects and provides a model which can be directly integrated into flight dynamics simulations. New wind tunnel maneuvers are applied which significantly reduce the time of the wind tunnel experiments and improve the quality of the aerodynamic dataset generation. The aerodynamic model is then integrated into a 6-DoF simulation environment in order to perform a flight dynamics analysis of the UCAV configuration. The purpose of this analysis is to compare the flying qualities as derived from wind tunnel data with the results determined on the basis of data from VSAERO, a low-fidelity aerodynamic tool used in preliminary aircraft design.

Item URL in elib:https://elib.dlr.de/99615/
Document Type:Conference or Workshop Item (Speech)
Title:An Innovative Route from Wind Tunnel Experiments to Flight Dynamics Analysis for a Highly Swept Flying Wing
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwithal, Janajana.schwithal (at) dlr.deUNSPECIFIED
Rohlf, DetlefDetlef.Rohlf (at) dlr.deUNSPECIFIED
Looye, Gertjangertjan.looye (at) dlr.deUNSPECIFIED
Liersch, Carsten M.carsten.liersch (at) dlr.deUNSPECIFIED
Date:September 2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:flying qualities, system identification, UCAV, flight dynamics model
Event Title:Deutscher Luft- und Raumfahrtkongress 2015
Event Location:Rostock, Deutschland
Event Type:national Conference
Event Dates:22.-24. Sep. 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Institute of System Dynamics and Control > Aircraft System Dynamics
Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Schwithal, Jana
Deposited On:23 Nov 2015 12:50
Last Modified:10 May 2016 23:35

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