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Design and Sizing on a Parametric Structural Model for a UCAV Configuration for Loads and Aeroelastic Analysis

Voß, Arne and Klimmek, Thomas (2017) Design and Sizing on a Parametric Structural Model for a UCAV Configuration for Loads and Aeroelastic Analysis. CEAS Aeronautical Journal, 8 (1), pp. 67-77. Springer. doi: 10.1007/s13272-016-0223-2. ISSN 1869-5590.

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Official URL: http://link.springer.com/article/10.1007/s13272-016-0223-2


The authors present the setup of a parametric structural finite element model for the loads and aeroelastic analysis of an unmanned combat air vehicle (UCAV). The DLR-F19 is a “flying wing” configuration with a geometry based on previous research conducted in the scope of the “Mephisto” project and its predecessors “FaUSST” and “UCAV2010”. While a considerable body of knowledge exists regarding conventional configurations, unconventional configurations lack that same level of experience, and data for comparison is rarely available. Using an adequate structural model, the conceptual design stage becomes more sophisticated and already allows for the investigation of physical effects at an early stage of the design process. Strategies for structural modeling and proper condensation, aero-structural coupling, loads integration, control surface attachment, and the use of composite materials are addressed in this paper. The resulting model is sized for minimum structural weight, taking into account 216 load cases. In addition, a comprehensive loads analysis campaign is conducted and the resulting loads are evaluated at defined monitoring stations. In addition to maneuver loads, quasi-static gust loads are calculated using the Pratt formula and compared to results obtained from a dynamic 1-cosine gust simulation. The reasons for higher loads of the Pratt formula based method are discussed. The conclusion is that the Pratt formula is suitable for the preliminary sizing of “flying wing” configurations.

Item URL in elib:https://elib.dlr.de/107257/
Document Type:Article
Title:Design and Sizing on a Parametric Structural Model for a UCAV Configuration for Loads and Aeroelastic Analysis
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.deUNSPECIFIED
Date:March 2017
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 67-77
Keywords:UCAV, parametrized structural modeling, loads, sizing
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:28 Nov 2016 16:33
Last Modified:23 Jul 2022 13:44

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