Study of the dynamic response of flexible rotor blades in forward flight

In recent years, the necessity for accurate and efficient analysis tools in rotorcraft design has become increasingly important, particularly when experimental testing is costly and time-consuming. Finite Element Method-based analysis is a powerful alternative to the traditional approaches, offering...

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Detalhes bibliográficos
Autor: Roldan Vilardell, David
Formato: tesis de maestría
Fecha de publicación:2025
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/457543
Acesso em linha:https://hdl.handle.net/2117/457543
Access Level:acceso abierto
Palavra-chave:Rotors--Dynamics
Aeroelasticity
Aerodynamics
Rotor blades
Beam theory
Theodorsen's model
Blade element momentum theory
Rotors--Dinàmica
Aeroelasticitat
Aerodinàmica
Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica::Aeroelasticitat
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spelling Study of the dynamic response of flexible rotor blades in forward flightRoldan Vilardell, DavidRotors--DynamicsAeroelasticityAerodynamicsAeroelasticityRotor bladesBeam theoryTheodorsen's modelBlade element momentum theoryRotors--DinàmicaAeroelasticitatAerodinàmicaÀrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica::AeroelasticitatIn recent years, the necessity for accurate and efficient analysis tools in rotorcraft design has become increasingly important, particularly when experimental testing is costly and time-consuming. Finite Element Method-based analysis is a powerful alternative to the traditional approaches, offering quick and precise results for complex aeroelastic problems. Therefore, this thesis aims to study the dynamic response of flexible rotor blades in forward flight, using the geometry of the MBB BO105 as a case study. The main objective is to understand the interaction between inertial and aerodynamic forces to study the conditions that lead to instabilities such as divergence and flutter. Moreover, a secondary goal is to determine the optimal configuration of the collective and cyclic pitch angles for a certain flight condition. To achieve these goals, a computational model has been developed that couples the Euler-Bernoulli beam model, which represents the structural behaviour, with Theodorsen’s unsteady aerodynamic model. Also, the Blade Element Momentum Theory is used to consider additional loads that are present in forward flight. This approach enables the simulation of a rotor blade’s dynamic and aeroelastic behaviour. Additionally, the results regarding the influence of the control inputs on the behaviour of the rotor blade show that the collective pitch has the most impact on the thrust generation. On the other hand, the lateral and longitudinal cyclic pitch inputs exhibit smaller effects. Overall, this thesis presents a modular, reliable and efficient computational tool for aeroelastic studies of rotor blades. It has the ultimate objective to allow a faster design process for rotor blade optimisation.Universitat Politècnica de CatalunyaYago Llamas, DanielRoca Cazorla, David20252025-07-1820262026-03-13master thesishttp://purl.org/coar/resource_type/c_bdccNAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfapplication/pdfhttps://hdl.handle.net/2117/457543reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4575432026-05-27T15:37:01Z
dc.title.none.fl_str_mv Study of the dynamic response of flexible rotor blades in forward flight
title Study of the dynamic response of flexible rotor blades in forward flight
spellingShingle Study of the dynamic response of flexible rotor blades in forward flight
Roldan Vilardell, David
Rotors--Dynamics
Aeroelasticity
Aerodynamics
Aeroelasticity
Rotor blades
Beam theory
Theodorsen's model
Blade element momentum theory
Rotors--Dinàmica
Aeroelasticitat
Aerodinàmica
Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica::Aeroelasticitat
title_short Study of the dynamic response of flexible rotor blades in forward flight
title_full Study of the dynamic response of flexible rotor blades in forward flight
title_fullStr Study of the dynamic response of flexible rotor blades in forward flight
title_full_unstemmed Study of the dynamic response of flexible rotor blades in forward flight
title_sort Study of the dynamic response of flexible rotor blades in forward flight
dc.creator.none.fl_str_mv Roldan Vilardell, David
author Roldan Vilardell, David
author_facet Roldan Vilardell, David
author_role author
dc.contributor.none.fl_str_mv Yago Llamas, Daniel
Roca Cazorla, David
dc.subject.none.fl_str_mv Rotors--Dynamics
Aeroelasticity
Aerodynamics
Aeroelasticity
Rotor blades
Beam theory
Theodorsen's model
Blade element momentum theory
Rotors--Dinàmica
Aeroelasticitat
Aerodinàmica
Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica::Aeroelasticitat
topic Rotors--Dynamics
Aeroelasticity
Aerodynamics
Aeroelasticity
Rotor blades
Beam theory
Theodorsen's model
Blade element momentum theory
Rotors--Dinàmica
Aeroelasticitat
Aerodinàmica
Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica::Aeroelasticitat
description In recent years, the necessity for accurate and efficient analysis tools in rotorcraft design has become increasingly important, particularly when experimental testing is costly and time-consuming. Finite Element Method-based analysis is a powerful alternative to the traditional approaches, offering quick and precise results for complex aeroelastic problems. Therefore, this thesis aims to study the dynamic response of flexible rotor blades in forward flight, using the geometry of the MBB BO105 as a case study. The main objective is to understand the interaction between inertial and aerodynamic forces to study the conditions that lead to instabilities such as divergence and flutter. Moreover, a secondary goal is to determine the optimal configuration of the collective and cyclic pitch angles for a certain flight condition. To achieve these goals, a computational model has been developed that couples the Euler-Bernoulli beam model, which represents the structural behaviour, with Theodorsen’s unsteady aerodynamic model. Also, the Blade Element Momentum Theory is used to consider additional loads that are present in forward flight. This approach enables the simulation of a rotor blade’s dynamic and aeroelastic behaviour. Additionally, the results regarding the influence of the control inputs on the behaviour of the rotor blade show that the collective pitch has the most impact on the thrust generation. On the other hand, the lateral and longitudinal cyclic pitch inputs exhibit smaller effects. Overall, this thesis presents a modular, reliable and efficient computational tool for aeroelastic studies of rotor blades. It has the ultimate objective to allow a faster design process for rotor blade optimisation.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-07-18
2026
2026-03-13
dc.type.none.fl_str_mv master thesis
http://purl.org/coar/resource_type/c_bdcc
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/457543
url https://hdl.handle.net/2117/457543
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universitat Politècnica de Catalunya
publisher.none.fl_str_mv Universitat Politècnica de Catalunya
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869423188584169472
score 15.811543

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