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| Documento principal | 6.4 MB | Adobe PDF |
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Advisor(s)
Abstract(s)
Uma das várias missões desempenhadas pelos UAVs é a de reconhecimento e vigilância
florestal. Com a introdução destes aeronaves não tripuladas no espaço aéreo civil,
certas medidas de segurança deverão ser cumpridas de forma a que outras aeronaves,
que partilham o mesmo espaço aéreo, não sejam postas em perigo. A utilização do
UAV Skyguardian, projecto que tem vindo a ser desenvolvido pela UBI/DCA e que
serve de base de estudo ao presente trabalho, tem como objectivo executar missões
de reconhecimento e vigilância florestal. Para que o UAV Skyguardian possa executar
esta missão de forma segura é incorporado o processo RAMS com o objectivo de
desenvolver um modelo de fiabilidade e conceito de manutenção. A implementação
do processo RAMS durante a fase inicial do projecto permite definir, de forma estruturada,
os parâmetros necessários para o projecto de desenvolvimento detalhado do
UAV Skyguardian e construir as instrucções de aeronavegabilidade continuada. No
âmbito RAMS foi definida uma configuração de sistemas e um perfil de exploração
da aeronave. O modelo de fiabilidade desenvolvido permitiu obter uma estimativa de
fiabilidade para a aeronave Skyguardian. No conceito de manutenção são identificados
alguns parâmetros de grande importância para a exploração sustentada da aeronave
e futura construção das instruções da aeronavegabilidade continuada. Durante a
implementação do modelo de fiabilidade e conceito de manutenção, foram também
detectadas dificuldades relativamente à falta de informação para estimar a fiabilidade
da aeronave e para definir, de forma mais detalhada, o conceito de manutenção.
Conclui-se que para superar esta falta deverão ser implementados programas de recolha
de informação necessária que permitam actualizar o modelo de fiabilidade e desta forma
obter um valor de fiabilidade mais realista. O conceito de manutenção proposto define
linhas de orientação, permitindo estabelecer posteriormente um plano de manutenção
e suporte logistico que permita manter e operar a aeronave durante o seu ciclo de vida.
Reconnaissance and forest surveillance mission is one of many tasks performed by UAVs. With the introduction of these unmanned aircraft in civil airspace, certain safety measures must be fulfilled in a way that other aircrafts, that share the same airspace, aren’t put in danger. UAV Skyguardian is a project being developed by UBI/DCA and serves as basis for study of this work. UAV Skyguardian to perform reconnaissance and forest surveillance mission in a secure way is embedded the RAMS process with the aim of developing a reliability model and maintenance concept. RAMS process implementation, during the initial phase of the project, allows to establish the necessary parameters for the detailed development of UAV Skyguardian project and build the continuing airworthiness instructions. Under RAMS process it was defined a system configuration and a operation profile for the aircraft. The reliability model was developed, allowing to obtain a estimate for the aircraft Skyguardian. In the maintenance concept were identified some factors of great importance for the aircraft sustained operation and future construction of the continuing airworthiness instructions. During reliability model and maintenance concept implementation, were also found difficulties regarding the lack of information to estimate the aircraft reliability and to define, in a more detail manner, the maintenance concept. To overcome this lack, programmes should be implemented for gathering necessary information to update the reliability model and thus obtain a more realistic value of reliability. The proposed maintenance concept defines some guidelines, allowing subsequently establishing a plan for maintenance and logistic support to maintain and operate the aircraft during its life cycle.
Reconnaissance and forest surveillance mission is one of many tasks performed by UAVs. With the introduction of these unmanned aircraft in civil airspace, certain safety measures must be fulfilled in a way that other aircrafts, that share the same airspace, aren’t put in danger. UAV Skyguardian is a project being developed by UBI/DCA and serves as basis for study of this work. UAV Skyguardian to perform reconnaissance and forest surveillance mission in a secure way is embedded the RAMS process with the aim of developing a reliability model and maintenance concept. RAMS process implementation, during the initial phase of the project, allows to establish the necessary parameters for the detailed development of UAV Skyguardian project and build the continuing airworthiness instructions. Under RAMS process it was defined a system configuration and a operation profile for the aircraft. The reliability model was developed, allowing to obtain a estimate for the aircraft Skyguardian. In the maintenance concept were identified some factors of great importance for the aircraft sustained operation and future construction of the continuing airworthiness instructions. During reliability model and maintenance concept implementation, were also found difficulties regarding the lack of information to estimate the aircraft reliability and to define, in a more detail manner, the maintenance concept. To overcome this lack, programmes should be implemented for gathering necessary information to update the reliability model and thus obtain a more realistic value of reliability. The proposed maintenance concept defines some guidelines, allowing subsequently establishing a plan for maintenance and logistic support to maintain and operate the aircraft during its life cycle.
Description
Keywords
Veículo aéreo não tripulado (UAV) Aeronave skyguardian - Aeronavegabilidade Aeronave skyguardian - Vigilância florestal Aeronave skyguardian - Reconhecimento florestal Veículo aéreo não tripulado - Processo RAMS