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An Adjoint-based Aerodynamic Shape Optimization Strategy for Trimmed Aircraft with Active Engines

Merle, Andrei und Stück, Arthur und Rempke, Arne (2017) An Adjoint-based Aerodynamic Shape Optimization Strategy for Trimmed Aircraft with Active Engines. In: 35th AIAA Applied Aerodynamics Conference, AIAA AVIATION Forum. 35th AIAA Applied Aerodynamics Conference, AIAA AVIATION Forum, 2017-06-05 - 2017-06-09, Denver, CO. doi: 10.2514/6.2017-3754.

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Offizielle URL: https://arc.aiaa.org/action/showCitFormats?href=%2Fdoi%2F10.2514%2F6.2017-3754&title=An+Adjoint-based+Aerodynamic+Shape+Optimization+Strategy+for+Trimmed+Aircraft+with+Active+Engines&doi=10.2514%2F6.2017-3754

Kurzfassung

An adjoint-based Trim-Corrected Optimization Strategy (TCOS) with active engines is presented with applications to a three-dimensional modern transport aircraft configuration. The airframe drag is minimized using a gradient-based optimization algorithm by adapting the shape parameters alone while a trim process guarantees by means of the trim parameters that the design satisfies the aircrafts steady-state equilibrium of forces and moments. Following this approach, the sensitivity of the objective function is corrected in order to be consistent with the trim constraints. The backbone of the design evaluation process is the HPC-based environment FlowSimulator allowing for an in-memory data exchange between the involved primal tools and their dual counterparts. These are a freeform deformation parametrization, a mesh deformation method based on the linear elasticity analogy preserving the fuselage shape during the horizontal tail plane deflection and the finite-volume RANS solver TAU including the numerical engine treatment and a fully differentiated discrete-adjoint implementation. Several optimization studies were performed to quantify the impact of an active and controlled engine on the optimization result, but also to compare the TCOS performance against that of a conventional gradient-based Direct Optimization Strategy (DOS) in which the trim constraints and parameters are explicitly handled by the optimization algorithm. TCOS was found to achieve similar overall drag reductions as DOS. However, TCOS was able to significantly reduce the drag during the first few iterations while resulting in a feasible design in every optimization iteration.

elib-URL des Eintrags:https://elib.dlr.de/116358/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:An Adjoint-based Aerodynamic Shape Optimization Strategy for Trimmed Aircraft with Active Engines
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Merle, AndreiAndrei.Merle (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Stück, ArthurArthur.Stueck (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Rempke, ArneArne.Rempke (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:Juni 2017
Erschienen in:35th AIAA Applied Aerodynamics Conference, AIAA AVIATION Forum
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.2514/6.2017-3754
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der HerausgeberHerausgeber-ORCID-iDORCID Put Code
NICHT SPEZIFIZIERTAmerican Institute of Aeronautics and AstronauticsNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Status:veröffentlicht
Stichwörter:RANS, adjoint, optimization, active engines
Veranstaltungstitel:35th AIAA Applied Aerodynamics Conference, AIAA AVIATION Forum
Veranstaltungsort:Denver, CO
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:5 Juni 2017
Veranstaltungsende:9 Juni 2017
Veranstalter :American Institute for Aeronautics and Astronautics (AIAA)
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - VicToria (alt), L - Simulation und Validierung (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > CASE, BS
Hinterlegt von: Merle, Andrei
Hinterlegt am:05 Dez 2017 14:19
Letzte Änderung:24 Apr 2024 20:20

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