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Assessment of Techniques for Global Sensitivity Analyses in Conceptual Aircraft Design

Alder, Marko und Ahmed, Tawfiq und Fröhler, Benjamin und Skopnik, Anna (2023) Assessment of Techniques for Global Sensitivity Analyses in Conceptual Aircraft Design. AIAA AVIATION 2023 Forum, 2023-06-12 - 2023-06-16, San Diego, USA. doi: 10.2514/6.2023-3696.

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Offizielle URL: https://arc.aiaa.org/doi/10.2514/6.2023-3696

Kurzfassung

The design of novel air transportation systems typically targets market introduction several years in the future and is therefore generally characterized by various assumptions, for example on the evolution of materials, manufacturing technologies and subsystem performance. These assumptions are inherently subject to uncertainties that need to be considered to make robust design decisions already in early stages of the design process. To manage the complexity of the design problem and the vast design spaces considered, the execution of sensitivity studies aims at identifying the most influential uncertain factors. While observing these, the factors with low impact can be neglected in the considerations. Nowadays, the majority of sensitivity studies conducted in aircraft design are based on local techniques, i.e. input variables are successively varied around a fixed, single point in the design space. Although this method is straightforward and easy to understand, it only provides limited informative value. Global sensitivity analyses (GSA) have the potential to overcome this limitation by quantifying the sensitivity characteristics of the entire design space. However, its application is numerically expensive and it is not always obvious which of the various GSA techniques fits best to the individual use cases. Therefore, the objective of this work is to assess the applicability of four different state-of-the-art GSA techniques, being the methods of Sobol', FAST, Morris, and Polynomial Chaos Expansion, to application cases representing the numerical challenges faced within conceptual aircraft design. These challenges are the high-dimensionality of the design space due to its multidisciplinary nature, the nonlinearity of the model equations involved, and the computational intensity of the design process. Through a thorough investigation of the convergence properties and a comparison of the resulting sensitivity measures, recommendations for the best choice of GSA methods within conceptual aircraft design are derived.

elib-URL des Eintrags:https://elib.dlr.de/199618/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Assessment of Techniques for Global Sensitivity Analyses in Conceptual Aircraft Design
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Alder, MarkoMarko.Alder (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Ahmed, Tawfiqtawfiq.ahmed (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Fröhler, BenjaminBenjamin.Froehler (at) dlr.dehttps://orcid.org/0000-0001-5695-1671157983041
Skopnik, Annaanna.skopnik (at) gmx.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2023
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.2514/6.2023-3696
Status:veröffentlicht
Stichwörter:Uncertainty Quantification, Global Sensitivity Analysis; Conceptual Aircraft Design
Veranstaltungstitel:AIAA AVIATION 2023 Forum
Veranstaltungsort:San Diego, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:12 Juni 2023
Veranstaltungsende:16 Juni 2023
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Effizientes Luftfahrzeug
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L EV - Effizientes Luftfahrzeug
DLR - Teilgebiet (Projekt, Vorhaben):L - Flugzeugtechnologien und Integration
Standort: Hamburg
Institute & Einrichtungen:Institut für Systemarchitekturen in der Luftfahrt
Hinterlegt von: Alder, Marko
Hinterlegt am:27 Nov 2023 07:08
Letzte Änderung:21 Jun 2024 08:49

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