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Nonlinear aeroelastic trim of very flexible aircraft described by detailed models

Riso, Cristina and Di Vincenzo, Fausto G. and Ritter, Markus Raimund and Cesnik, Carlos E. S. and Mastroddi, Franco (2018) Nonlinear aeroelastic trim of very flexible aircraft described by detailed models. Journal of Aircraft, Vol. 5 (No. 6), pp. 2338-2346. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.C034787 ISSN 0021-8669

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Official URL: https://arc.aiaa.org/doi/10.2514/1.C034787

Abstract

This Paper presents an efficient algorithm for the nonlinear aeroelastic trim analysis of very flexible aircraft described by detailed models. The algorithm is based on a novel inertia relief technique for large displacements and is applicable to fluid–structure iteration frameworks coupling generic structural and aerodynamic solvers, including high-fidelity commercial solvers. The methodology is tested on a low-order model of the University of Michigan’s X-HALE experimental vehicle in order to compare to reference results for a typical steady rectilinear flight condition. Nonlinear aeroelastic trim analyses conducted at different flight speeds show that the proposed approach gives a smooth and fast convergence to the trim solution, which makes it suitable for high-fidelity aeroelastic design of very flexible aircraft.

Item URL in elib:https://elib.dlr.de/126467/
Document Type:Article
Title:Nonlinear aeroelastic trim of very flexible aircraft described by detailed models
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Riso, CristinaUniversity of MichiganUNSPECIFIED
Di Vincenzo, Fausto G.MSC.Software ToulouseUNSPECIFIED
Ritter, Markus RaimundMarkus.Ritter (at) dlr.dehttps://orcid.org/0000-0003-3828-0397
Cesnik, Carlos E. S.cesnik (at) umich.eduUNSPECIFIED
Mastroddi, FrancoUniversity of Rome “La Sapienza”UNSPECIFIED
Date:13 August 2018
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:Vol. 5
DOI :10.2514/1.C034787
Page Range:pp. 2338-2346
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0021-8669
Status:Published
Keywords:aeroelasticity, trim, large deformations, geometrically nonlinear structural analysis, X-HALE
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 - VicToria
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Deposited By: Ritter, Markus Raimund
Deposited On:12 Feb 2019 08:09
Last Modified:31 Jul 2019 20:24

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