• I.P.: Jose Javier Ramasco
  • Pàgina web:
  • Data d'inici: 1 de juliol de 2013
  • Data de finalització: 31 de octubre de 2015

Looking at different delay types, the so-called “reactionary delays” are identified as one of the largest contributor. These knock-on or ‘propagated delays’ do not seem to have a specific origin or cause. In fact, it is the duration of the delay what is transferred from a previous flight to the next one by the same or a different aircraft. Generally reactionary delays result from primary delays, but they have to be handled differently and are not to be seen as an individual delay cause. Reactionary delays have a great impact on air traffic performance. However, the research effort to understand and handle this kind of delays is in practice limited. While being critically important due to its contribution to the total cost of delay, it is the primary cause which must be identified if effective action is to be taken. The present project proposes to develop new concepts and methods to be implemented in software tools with the aim of describing in a realistic way the propagation of delays throughout European Air Transportation Network. Moreover, the model to be developed will permit an evaluation of the daily planning performance and the analysis of the impact of perturbations in the network. Additionally new metrics will be defined inspired in Complex Networks Theory to quantify the level of Air Transport Network congestion. These metrics of performance to be introduced will have different level of resolution, from local or airport based to regional or network-wide. Thus the model will allow to evaluate a day planning performance as well as to assess the impact of perturbations in the network. The model structure and its functionalities will also make possible the exploration of the limits of the present theories in Complex Networks regarding Air Transportation system stability and control of networked dynamic systems. The innovative methods and the odel to be developed will be of great relevance to test and improve Air Traffic Management in areas such as flight scheduling, slot assignment or response to nexpected events, all of which rank within the objectives of the SJU WPE theme “Mastering Complex Systems Safely”. The contact with scientific community, main stakeholders and industry is planned for almost the overall project lifecycle. Some of these contacts have been already carried out in an exploratory mode and the project team counts with a Letter of Support of a relevant Stakeholder.


  • Jose Javier Ramasco

    Jose Javier Ramasco

  • Antònia Tugores

    Antònia Tugores

  • Bruno Campanelli

    Bruno Campanelli

Publicacions recents

Comparing the modeling of delay propagation in the US and European air traffic networks

Campanelli,B; Fleurquin, P; Arranz,A; Etxebarria, I; Ciruelos, C; Eguiluz, V M; Ramasco, J J
Journal of Air Transport Management 56, 12-18 (2016)

TREE model: a tool to explore delay reduction scenarios in the ECAC area

Campanelli, Bruno; Fleurquin, Pablo; Ciruelos, Carla; Arranz, Andres; Eguiluz, V.M.; Ramasco, J.J.
Proceedings of the Fifth SESAR Innovation Days (Schaefer, Dirk, Editor), EUROCONTROL, 2015, (2015)

Modelling delay propagation trees for scheduled flights

Campanelli, B.; Ciruelos, C.; Arranz, A.; Etxebarria, I.; Peces, S.; Fleurquin, P.; Eguiluz, V.M. ; Ramasco, J.J.
Proceedings of the 11th USA/Europe Air Traffic Management R&D Seminar, Lisbon, Portugal, 2015, EUROCONTROL, 2015, (2015)

Trees of Reactionary Delay: Addressing the Dynamical Robustness of the US Air Transportation Network

P. Fleurquin, B. Campanelli, V.M. Eguiluz, J.J. Ramasco
The Fourth SESAR Innovation Days, , , (2014)

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