Risk analysis of the airborne time-based spacing operation through a stochastically and dinamiclly coloured Petri net model. / Análise de risco da operação de espaçamento temporal aerotransportado por meio de um modelo em rede de Petri estocástica e dinamicamente colorida.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

The safety in the airspace can considerably increase with the use of airborne spacing and separation operations. Under this paradigm, the task of maintaining a safe distance between aircraft is delegated to the pilots, which will be supported by the Airborne Separation Assistance System (ASAS). With this system, which is still in experimental phase, pilots become aware of the surrounding air traffic risks with up to 15 minutes in advance, without the help of air traffic controllers on the ground. This antecedence is much greater than the one provided by the current Traffic Collision Avoidance System (TCAS). ASAS uses a more advanced communication technology than Mode-C transponder, broadly used in the current civil aviation for collision avoidance purposes. The development of ASAS is being carried out intensively in Eurocontrol and in other initiatives in the United States of America, and this novel system is intended to work in parallel with the current collision avoidance systems, acting as safety nets. The present study approaches the ASAS application to improve the precision of spacing between aircraft that sequentially arrive at an airport, using the so called mathematical formalism "Stochastically and Dynamically Coloured Petri Net", for evaluating quantitative data about accident risk. These data indicate that the accident risk is significantly smaller when aircraft pairs use ASAS Spacing than when aircraft pairs do not use ASAS Spacing.

ASSUNTO(S)

tráfego aéreo petri nets asas simulation risk analysis air traffic análise de risco redes de petri

ACESSO AO ARTIGO

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