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Aerodynamic and aeroelastic uncertainty quantification of NATO STO AVT-251 unmanned combat aerial vehicle

Da Ronche, Andrea and Drofelnik, Jernej and van Rooij, Michel P.C. and Kok, Johan and Panzeri, Marco and Voß, Arne (2019) Aerodynamic and aeroelastic uncertainty quantification of NATO STO AVT-251 unmanned combat aerial vehicle. Aerospace Science and Technology, 91, pp. 627-639. Elsevier. doi: 10.1016/j.ast.2019.04.057. ISSN 1270-9638.

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Official URL: https://linkinghub.elsevier.com/retrieve/pii/S1270963819305838


Turbulence models based on Reynolds-averaged Navier-Stokes (RANS) equations remain the workhorse in the computation of high Reynolds-number wall-bounded flows. While these methods have been deployed to design the configuration developed within the NATO STO AVT-251 Task Group, their deficiencies in modelling complex flows are well-documented. However, an understanding of the sources of errors and uncertainties in RANS solvers, arising for example from different numerical schemes and flow modelling techniques, is missing to date. The aim of this work is to establish and quantify the impact that epistemic uncertainties within RANS solvers have on the aerodynamic and aeroelastic response of the combat aerial vehicle. This will produce a range of all possible values of interest due to the inherent uncertainty of RANS solvers, which is expected to be highly dependent on the flow conditions and geometry configuration. This information, in turn, is used to establish the robustness of the AVT-251 design and its performance metrics considering a high-g pull-up manoeuvre used for structural sizing. It is found that the static aeroelastic analysis without aerodynamic uncertainty (deterministic analysis) under predicted the largest generalised force, with an immediate consequence on the structural design.

Item URL in elib:https://elib.dlr.de/128290/
Document Type:Article
Title:Aerodynamic and aeroelastic uncertainty quantification of NATO STO AVT-251 unmanned combat aerial vehicle
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Da Ronche, AndreaUniversity of SouthamptonUNSPECIFIED
Drofelnik, JernejUniversity of SouthamptonUNSPECIFIED
van Rooij, Michel P.C.Netherlands Aerospace CentreUNSPECIFIED
Kok, JohanNetherlands Aerospace CentreUNSPECIFIED
Panzeri, MarcoNoesis Solutions N.V.UNSPECIFIED
Voß, ArneArne.Voss (at) dlr.dehttps://orcid.org/0000-0003-2266-7853
Date:August 2019
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 627-639
Keywords:aerodynamics, aeroelasticity, uncertainty quantification
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 - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Deposited By: Voß, Arne
Deposited On:12 Jul 2019 15:40
Last Modified:12 Jul 2019 15:40

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