Practical implementation of 4D-trajectories in air traffic management: system requirements and time windows monitoring
Aircraft Engineering and Aerospace Technology
ISSN: 0002-2667
Article publication date: 13 May 2020
Issue publication date: 27 October 2020
Abstract
Purpose
The current air traffic management (ATM) operational approach is changing; “time” is now integrated as an additional fourth dimension on trajectories. This notion will impose on aircraft the compliance of accurate arrival times over designated checkpoints (CPs), called time windows (TWs). This paper aims to clarify the basic requirements and foundations for the practical implementation of this functional framework.
Design/methodology/approach
This paper reviews the operational deployment of 4D trajectories, by defining its relationship with other concepts and systems of the future ATM and communications, navigation and surveillance (CNS) context. This allows to establish the main tools that should be considered to ease the application of the 4D-trajectories approach. This paper appraises how 4D trajectories must be managed and planned (negotiation, synchronization, modification and verification processes). Then, based on the evolution of a simulated 4D trajectory, the necessary corrective measures by evaluating the degradation tolerances and conditions are described and introduced.
Findings
The proposed TWs model can control the time tolerance within less than 100 s along the passing CPs of a generic trajectory, which is in line with the expected future ATM time-performance requirements.
Originality/value
The main contribution of this work is the provision of a holistic vision of the systems and concepts that will be necessary to implement the new 4D-trajectory concept efficiently, thus enhancing performance. It also proposes tolerance windows for trajectory degradation, to understand both when an update is necessary and what are the conditions required for pilots and air traffic controllers to provide this update.
Keywords
Acknowledgements
This study has been developed under the OIDATM (Observatory for the Advancement of Air Traffic Management) promoted by ISDEFE. Particularly, the authors would like to acknowledge Miguel A Martín Blanco and Mar Najar Godoy for their valuable comments.
Citation
Rodríguez-Sanz, Á., Claramunt Puchol, C., Pérez-Castán, J.A., Gómez Comendador, F. and Arnaldo Valdés, R.M. (2020), "Practical implementation of 4D-trajectories in air traffic management: system requirements and time windows monitoring", Aircraft Engineering and Aerospace Technology, Vol. 92 No. 9, pp. 1357-1375. https://doi.org/10.1108/AEAT-12-2019-0236
Publisher
:Emerald Publishing Limited
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