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Aeroelastic Modeling, Loads Analysis and Structural Design of a Fighter Aircraft

Voß, Arne and Klimmek, Thomas (2022) Aeroelastic Modeling, Loads Analysis and Structural Design of a Fighter Aircraft. ICAS Congress, 4.-9. September 2022, Stockholm, Schweden.

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Abstract

The DLR Future Fighter Demonstrator (FFD) is a highly agile, two-seated aircraft with twin-engines with reheat and a design flight speed extending into the supersonic regime up to Ma=2.0. Based on a given conceptual design, this work focuses on the aeroelastic modeling, including structures, masses and aerodynamics. With these models, a comprehensive loads analysis with 688 maneuver load cases, covering the whole flight envelope, is performed. Based on the resulting section and nodal loads, the structural model is subject to a structural optimization resulting in a preliminary, total primary structural mass of ~3.3t. To confirm the results, the aerodynamic panel methods (VLM and ZONA51) are compared to higher fidelity results obtained from CFD, showing a moderate agreement in terms of surface pressure distribution.

Item URL in elib:https://elib.dlr.de/188328/
Document Type:Conference or Workshop Item (Speech)
Title:Aeroelastic Modeling, Loads Analysis and Structural Design of a Fighter Aircraft
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Voß, ArneArne.Voss (at) dlr.dehttps://orcid.org/0000-0003-2266-7853
Klimmek, ThomasThomas.Klimmek (at) dlr.dehttps://orcid.org/0000-0002-5573-7355
Date:4 September 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aeroelasticity, maneuver loads, military aircraft, structural optimization, supersonic panel methods
Event Title:ICAS Congress
Event Location:Stockholm, Schweden
Event Type:international Conference
Event Dates:4.-9. September 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Aircraft and  Validation
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Deposited By: Voß, Arne
Deposited On:25 Nov 2022 13:08
Last Modified:25 Nov 2022 13:08

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