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Flight Dynamics Modeling of a Body Freedom Flutter Vehicle for Multidisciplinary Analyses

Leitner, Martin and Knoblach, Andreas and Kier, Thiemo and Moreno, Claudia and Kotikalpudi, Aditya and Pfifer, Harald and Balas, Gary (2015) Flight Dynamics Modeling of a Body Freedom Flutter Vehicle for Multidisciplinary Analyses. AIAA Modelling and Simulation Technologies Conference, 05.-09. Jan. 2015, Orlando, USA. DOI: 10.2514/6.2015-0905

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Abstract

Integrated flight dynamic models play an essential role in all aircraft design phases. Examples are flight loads analysis for sizing of the structure, design of control laws, as well as design and analysis of missions. For these purposes, DLR has developed a robust, quick and unified process for generating, pre-processing and automatically integrating aircraft models. The process is called DLR Aircraft Model Integration Process (DAMIP) and is able to draw from a variety of different (best available) data sources. The DAMIP proce- dure is based on an unified environment, allowing aircraft modeling projects to be set-up in an easy and comfortable fashion. After this, the individual steps can be performed automatically, making it very suitable for the use in multidisciplinary design analysis and optimization loops. This paper outlines and demonstrates the DAMIP process as applied to the Body Freedom Flutter (BFF) vehicle that is currently studied and in-use at the De- partment of Aerospace Engineering at the University of Minnesota. In order to validate the integrated models the modal basis of the BFF vehicle is corrected by data obtained from ground vibration test (GVT). Linear state-space models are then generated to feed linear parameter-varying (LPV) system approaches and perform a flutter analysis by inspecting stability of the system matrices. The results are compared to those of the P-K Method analysis performed by Lockheed Martin Aeronautics. To demonstrate the flexibility of DAMIP, nonlinear models were generated in the equation-based, object-oriented Model- ica language and exported as S-functions to be used in the Matlab/Simulink simulation environment.

Item URL in elib:https://elib.dlr.de/100038/
Document Type:Conference or Workshop Item (Speech)
Title:Flight Dynamics Modeling of a Body Freedom Flutter Vehicle for Multidisciplinary Analyses
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Leitner, Martinmartin.leitner (at) dlr.deUNSPECIFIED
Knoblach, AndreasAndreas.Knoblach (at) DLR.deUNSPECIFIED
Kier, ThiemoThiemo.Kier (at) DLR.deUNSPECIFIED
Moreno, Claudiamoren148 (at) umn.eduUNSPECIFIED
Kotikalpudi, Adityakotik001 (at) umn.eduUNSPECIFIED
Pfifer, Haraldhpfifer (at) umn.eduUNSPECIFIED
Balas, Garybalas (at) aem.umn.eduUNSPECIFIED
Date:8 January 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2015-0905
Status:Published
Keywords:Aeroelasticity, GVT, Flutter
Event Title:AIAA Modelling and Simulation Technologies Conference
Event Location:Orlando, USA
Event Type:international Conference
Event Dates:05.-09. Jan. 2015
Organizer:AIAA
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 - Systems and Cabin
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Leitner, Martin
Deposited On:01 Dec 2015 16:33
Last Modified:16 Jul 2019 16:43

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