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Marcelo Santiago de Sousa

Publications (4)

Unraveling Aircraft Flutter: The Role of Structural Actuator Saturation in Aeroelastic Instabilities

Marcelo Santiago de Sousa, Luiz Felipi Ribeiro Siqueira, José Junior Leão Rodrigues & Flávio Luiz Cardoso-Ribeiro · Archives of Current Research International · 2024

This article presents a new concept that can be used to explain the physical mechanism that causes flutter: the concept of the structural actuator and the effects of its saturation on the aeroelastic stability of an aircraft. One detailed physical mechanism that could be the caus...

Open access Research Article 10.9734/acri/2024/v24i11986

Analyzing the Impact of Wing Flexural Axis Position on the Dynamics of a Very Flexible Airplane Using Strain-based Formulation

Marcelo Santiago de Sousa, Flávio Luiz Cardoso Ribeiro, Roberto Gil Annes da Silva, Pedro Paglione & Sebastião Simões da Cunha Junior · Archives of Current Research International · 2024

New technologies and the needs of specific missions have allowed and stimulated the development of airplanes with great structural flexibility. In these vehicles, there is a significant coupling between aeroelastic phenomena and flight dynamics. This has been a topic of research...

Open access Research Article 10.9734/acri/2024/v24i5697

A Detailed Physical Explanation of an Aircraft Flutter Mechanism

Luiz Felipi Ribeiro Siqueira, Marcelo Santiago de Sousa, Flávio Luiz Cardoso-Ribeiro & Sebastião Simões da Cunha Junior · Archives of Current Research International · 2024

Each dynamic mode (aeroelastic) is made up of torsional and rotational movements. These two movements in each mode were dissociated and the phase, amplitude, damping and frequency of each of these movements were analyzed.  The structural resistances of torsion and bending, as wel...

Open access Research Article 10.9734/acri/2024/v24i5696

Modified Universal Integral Regulator for Quadrotor UAV in the Presence of External Disturbances

Rafaella Barrêto Campos, Yohan Alí Díaz-Méndez, Marcelo Santiago de Sousa & Sebastião Simões Cunha · Archives of Current Research International · 2024

Universal Integral Regulator (UIR) is a widely used control law for control problems, it is based on sliding mode control with the inclusion of a Conditional Integrator (CI). In the original approach of this control law, the main gain is considered a constant. The purpose of this...

Open access Research Article 10.9734/acri/2024/v24i5675