Ritter, Markus and Cesnik, Carlos E. S. and Jones, Jessica (2016) Enhanced Modal Approach for Free-flight Nonlinear Aeroelastic Simulation of Very Flexible Aircraft. In: 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 4.-8. Januar, 2016, San Diego, California. doi: 10.2514/6.2016-1794.
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Abstract
A recently proposed modal-based method that captures the geometric nonlinear effects in the regime of large deformations is applied to the modeling of University of Michigan’s X-HALE UAV. The method is an extension of the classical modal approach towards large geometric deflections and uses higher-order stiffness terms and mode components to ac- count for nonlinear force-displacement relationships and geometrically nonlinear displace- ment fields. In this paper, the method is further extended to enable rigid body motions of an aircraft in free flight. The verification of this extension is done using the X-HALE model which is considered as a challenging test case due to pronounced nonlinearities in steady and unsteady flight conditions. A structural and an aerodynamic model of the X-HALE UAV were built and aeroelastic simulations of the model were done and validated with UM/NAST results.
Item URL in elib: | https://elib.dlr.de/102743/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
Title: | Enhanced Modal Approach for Free-flight Nonlinear Aeroelastic Simulation of Very Flexible Aircraft | ||||||||||||
Authors: |
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Date: | 2016 | ||||||||||||
Journal or Publication Title: | 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | No | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
DOI: | 10.2514/6.2016-1794 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | Free flying Aircraft, Large Deformation, Nonlinear Aeroelasticity, Nonlinear Flight Dynamics, Nonlinear Structural Dynamics, Structural Dynamics | ||||||||||||
Event Title: | 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference | ||||||||||||
Event Location: | San Diego, California | ||||||||||||
Event Type: | international Conference | ||||||||||||
Event Dates: | 4.-8. Januar, 2016 | ||||||||||||
Organizer: | AIAA SciTech | ||||||||||||
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 - Flexible Aircraft (old) | ||||||||||||
Location: | Göttingen | ||||||||||||
Institutes and Institutions: | Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design | ||||||||||||
Deposited By: | Ritter, Markus Raimund | ||||||||||||
Deposited On: | 12 Feb 2016 11:53 | ||||||||||||
Last Modified: | 10 May 2016 23:44 |
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