EST - Artigos de Periódicos

URI permanente para esta coleçãohttps://ri.uea.edu.br/handle/riuea/4779

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Conceitos básicos de veículos subaquáticos não tripulados e desafios de implementação na região amazônica
(Universidade do Estado do Amazonas, 2022-05-19) Silva, Eliana Brandão da; Fontes, Jassiel Vladimir Hernández; Maia, Harlysson Wheiny Silva; Maia, Harlysson Wheiny Silva; Amiri, Mojtaba Maali
Much of what lies beneath the surface of rivers and oceans remains unexplored. For this reason, the use of unmanned underwater exploration technologies is becoming increasingly relevant in several areas of engineering, including Naval and Ocean Engineering. Through controlled devices, it is possible to explore previously unknown regions as well as carry out increasingly complex industrial and research activities. The need to use these technologies for underwater exploration in the Amazon region is also relevant; however, so far, there are no academic studies in the north region of Brazil that collect information for the understanding of existing technologies and their basic operating principles. Therefore, the present work aims to compile basic information related to existing unmanned underwater devices, considering topics related to Naval and Ocean Engineering. These include the types of existing devices, relevant propulsive aspects, typical mathematical modeling of their dynamics, and general concepts of stability. Finally, the existing limitations and opportunities to use unmanned underwater vehicles in the rivers of the Amazon region are discussed. It is expected that the present work will serve as a basis for studies related to the possible implementation of unmanned underwater vehicles in this region.
Levantamento de embarcações de pequeno porte comuns na Região Amazônica e estudo da resposta em ondas de uma embarcação do tipo voadeira
(Universidade do Estado do Amazonas, 2024-02-16) Almeida, Hector Reis; Fontes, Jassiel Vladimir Hernández Fontes; Fontes, Jassiel Vladimir Hernández; Santander, Elvis Jhoarsy Osorio; Barreda del Campo, Eduardo Rafael; Hechavarría Pérez, José Ramón
It is possible that the Brazilian Amazon has one of the largest concentrations of small boats in Brazil, mainly due to the lack of roads and the need for water transport of people and cargo between different cities. Many of these vessels, registered or not registered by the maritime authorities, can reach high speeds, making it necessary to further study to characterize their hydrodynamic behavior. This work aims to contribute to the classification of small, motorized vessels, typical of the Amazon region, and to carry out an analysis of the behavior on regular waves of a regional vessel known as “voadeira”. The main objective is to evaluate the possible movements that a ship of this type can present in wave conditions, without propulsion. These conditions may occur during adverse climatic events, common in the region, as they may generate eventual waves on the surface of the rivers. For the survey of vessels, the city of Itacoatiara, in the State of Amazonas, was considered as the representative location for the study. A voadeira type vessel was selected as a case study. The ship's hull was modeled using computer-assisted design and its response in waves was investigated using hydrodynamic potential theory methods. We investigated the effect of the variation of the angle of incidence of the waves and the vertical position of the center of gravity of the resulting movements. The results allowed determining the most significant movements, including the wave frequency that may cause them. The rotational movements show significant increases for different wave conditions. The methodology presented can be extended to evaluate other regional vessels.
As tecnologias 4.0 como alternativas de prevenção de acidentes com embarcações na Região Amazônica
(Universidade do Estado do Amazonas, 2023-10-13) Aziz, Giovanna Mabily Pinto Abdel; Fontes, Jassiel Vladimir Hernández; Hechavarria Perez, Jose Ramon; Maia, Harlysson Wheiny Silva; Hernández, Irving David
The use of vessels in the Amazon region plays an important role in the commercial activities of the northern region of Brazil; however, it faces several risks of accidents that can result in loss of lifes, properties, and environmental damage. Industry 4.0 technologies can be alternatives to prevent accidents in various activities in the region that involve the use of vessels. However, Industry 4.0 technologies are recent and despite the growing attention on applications of these technologies in several engineering areas, there is still a lack of information related to the alternatives of application in the regional naval industry. The present work aims to know alternatives of Industry 4.0 that could be used to reduce accidents with the use of vessels in the Amazon region. First, some of the most common accidents that can happen to vessels in the region were presented. Therefore, the concepts of 4.0 technologies most used in maritime applications were reviewed and documented: cyber-physical systems, augmented reality and simulation, big data analytics, cloud computing and internet of things. Finally, the possibilities of applying 4.0 technologies to prevent accidents in the Amazon region were discussed, identifying possible limitations. It was found in the literature review that collisions are the most common accidents with vessels, and automatic identification systems are the most used technology for their control. In contrast, it was seen that the applications of cloud computing, IoT and bigdata analysis in accident prevention in the shipping industry still need to be explored. It is hoped that the present work can contribute to the prevention of accidents in the future of the Amazon region.