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Transition From Preliminary to Detailed Design of a Highly Elastic Solar Electric Aircraft

Voß, Arne and Koch, Christopher and Niemann, Steffen and Mantei, Marius and Handojo, Vega and Weiser, Christian (2022) Transition From Preliminary to Detailed Design of a Highly Elastic Solar Electric Aircraft. IFASD 2022, 13.-17. June 2022, Madrid, Spain.

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This work presents the evolution of the aeroelastic modeling of a solar electric aircraft. The dimensions (wing span of ≈27.0 m) and the extreme light-weight construction (wing loading ≈4.0 kg/m²) results in a highly flexible aircraft, making aeroelastic analyses mandatory in all stages of the aircraft design. Comparing the preliminary with the detailed design phase, the aeroelastic models are significantly improved in their level of detail. Still, the models show similar structural dynamic characteristics and a comparable loading, e.g. in terms of wing bending and torsional moments and , where the highest loads are caused by similar load cases. For the sizing, the analytic approach from the preliminary design is backed-up with numerical analyses using a detailed FE model. A comprehensive flutter analysis confirms the findings obtained from a flutter check during the preliminary design. Finally, first structural tests are prepared to validate the models.

Item URL in elib:https://elib.dlr.de/186492/
Document Type:Conference or Workshop Item (Speech)
Title:Transition From Preliminary to Detailed Design of a Highly Elastic Solar Electric Aircraft
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Voß, ArneArne.Voss (at) dlr.dehttps://orcid.org/0000-0003-2266-7853
Koch, ChristopherChristopher.Koch (at) dlr.deUNSPECIFIED
Niemann, SteffenSteffen.Niemann (at) dlr.dehttps://orcid.org/0000-0001-9272-0635
Mantei, MariusMarius.Mantei (at) dlr.deUNSPECIFIED
Handojo, Vegavega.handojo (at) dlr.dehttps://orcid.org/0000-0001-6030-2383
Weiser, ChristianChristian.Weiser (at) dlr.dehttps://orcid.org/0000-0002-2968-6961
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:High altitude platform, HALE, loads analysis, aeroelasticity, structural dynamics, structural sizing, flutter, preliminary design, detailed design
Event Title:IFASD 2022
Event Location:Madrid, Spain
Event Type:international Conference
Event Dates:13.-17. June 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Unmanned Aerial Systems
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Voß, Arne
Deposited On:13 Jun 2022 09:56
Last Modified:29 Jun 2022 15:35

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