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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. (2016) An innovative route from wind tunnel experiments to flight dynamics analysis for a highly swept flying wing. CEAS Aeronautical Journal. Springer. DOI: 10.1007/s13272-016-0214-3 ISSN 1869-5590

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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 well as its high agility. To assure good flying qualities, however, is a critical aspect for such a configuration. It should thus 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 tests. This allows the modelling of nonlinear aerodynamic effects and provides a model which can be integrated directly 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-degrees-of-freedom 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 numerical results determined on the basis of potential flow methods used in preliminary aircraft design.

Item URL in elib:https://elib.dlr.de/106298/
Document Type:Article
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.dehttps://orcid.org/0000-0003-3554-0560
Rohlf, DetlefDetlef.Rohlf (at) dlr.deUNSPECIFIED
Looye, GertjanGertjan.Looye (at) dlr.deUNSPECIFIED
Liersch, Carsten M.Carsten.Liersch (at) dlr.dehttps://orcid.org/0000-0001-6417-6732
Date:24 September 2016
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1007/s13272-016-0214-3
Keywords:system identification, parameter estimation, flying qualities analysis, wind tunnel experiment, aerodynamic modelling, UCAV
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, L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Deposited By: Schwithal, Jana
Deposited On:29 Sep 2016 11:12
Last Modified:31 Jul 2019 20:03

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