Enviaments recents

  • Effect of radii of exemption on ground delay programs with operating cost based cruise speed reduction 

    Delgado Muñoz, Luis; Prats Menéndez, Xavier (2013)
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    When a ground delay program (GDP) is defined, a radius of exemption is typically set to exclude from having to realize ground delay aircraft departing from greater distances than the selected radius distance. A trade-off ...
  • An efficient unique state coding algorithm for signal transition graphs 

    Pastor Llorens, Enric; Cortadella, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 1993)
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    Current algorithms to force the complete state coding (CSC) property for signal transition graphs work on the state graph and, therefore require exponential time and space. Polynomial algorithms have been only proposed for ...
  • Polynomial algorithms for the synthesis of hazard-free circuits from signal transition graphs 

    Pastor Llorens, Enric; Cortadella, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 1993)
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    Methods for the synthesis of asynchronous circuits from signal transition graphs (STGs) have commonly used the state graph to solve the two main steps of this process: the state assignment problem and the generation of ...
  • Enhanced Indicators to Monitor ATM Performance in Europe. Main findings of the APACHE SESAR Exploratory Research project. 

    Prats Menéndez, Xavier; Barrado Muxí, Cristina; Netjasov, Fedja; Crnogorac, Dusan; Pavlovic, Goran; Agüi, Ignacio; Vidosavljevic, Andrija (2018)
    Text en actes de congrés
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    This paper highlights the principal contributions and outcomes of the APACHE Project (a SESAR 2020 exploratory research project) in air traffic management performance assessment for monitoring purposes (post-ops analysis). ...
  • Fast sensitivity-based optimal trajectory updates for descent operations subject to time constraints 

    Dalmau Codina, Ramon; Baxley, Brian; Prats Menéndez, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The ability to meet a controlled time of arrival during a continuous descent operation will enable environmentally friendly and fuel efficient descent operations while simultaneously maintaining airport throughput. Previous ...
  • Real-time Identification of Guidance Modes in Aircraft Descents Using Surveillace Data 

    Dalmau Codina, Ramon; Pérez Batlle, Marcos; Prats Menéndez, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Trajectory predictors require information on the flight-intent in order to estimate the future state of the aircraft. At present, however, such information is not available or it is very limited and coarse (unless predicting ...
  • pyBADA: Easy BADA integration in Python for rapid prototyping 

    Dalmau Codina, Ramon; Melgosa Farrés, Marc; Prats Menéndez, Xavier (2018)
    Comunicació de congrés
    Accés obert
    The base of aircraft data (BADA) model provides accurate modelling of aircraft performances over the complete flight envelope for flight simulation and prediction applications. BADA is based on a generic total energy model, ...
  • Arrival trade-offs considering total flight and passenger delays and fairness 

    Villardi de Montlaur, Adeline de; Delgado Muñoz, Luis (2018)
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    Accés restringit per política de l'editorial
    This paper studies trade-offs between flight and passenger delays and fairness when assigning delay pre-tactically (on-ground at origin airport) due to reduced airport capacity. The paper also defines and analyses ...
  • Optimal assignment of 4D close-loop instructions to enable CDOs in dense TMAs 

    Sáez García, Raúl; Dalmau Codina, Ramon; Prats Menéndez, Xavier (2018)
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    Accés restringit per política de l'editorial
    Continuous descent operations (CDOs) with required times of arrival (RTAs) represent a potential solution to reduce the environmental impact in terminal maneuvering areas without degrading capacity. However, flight management ...
  • Synchronization of traffic flow and sector opening for collaborative demand and capacity balancing 

    Xu, Yan; Prats Menéndez, Xavier; Delahaye, Daniel (2018)
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    Accés restringit per política de l'editorial
    —This paper proposes a method to synchronize traffic flow optimization and sector opening scheduling, with the aim of achieving flexible demand and capacity balancing (DCB). Delay assignment, trajectory options and ...
  • Wake vortex hazards in en-route airspace and suspected hazard area identification using high fidelity simulation models 

    Melgosa Farrés, Marc; Ruiz Navarro, Sergio; Busto, Javier; Steen, Meiko; Rojas Gregorio, José Ignacio; Prats Menéndez, Xavier (2018)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    This paper presents a discussion about risks and hazards of potential wake vortex encounters in the en-route airspace. High-fidelity simulations under realistic conditions have been analysed showing that the current ...
  • Alternative Trajectory Options for Delay Reduction in Demand and Capacity Balancing 

    Xu, Yan; Dalmau Codina, Ramon; Melgosa Farrés, Marc; Villardi de Montlaur, Adeline de; Prats Menéndez, Xavier (2018)
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    Aiming to a more collaborative demand and capacity balancing (DCB), in the scope of trajectory based operations, this paper presents an approach that takes alternative trajectories into a DCB optimization algorithm. ...

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