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Designing freedom into trajectory-based operations

Kuenz, Alexander and Schwoch, Gunnar and Korn, Bernd (2015) Designing freedom into trajectory-based operations. Proceedings of the Institution of Mechanical Engineers Part G-Journal of Aerospace Engineering. SAGE Publications. ISSN 0954-4100

Full text not available from this repository.

Abstract

Modern Flight Management Systems (FMS) are able to predict highly precise 4D trajectories for complete flights from take-off to touchdown. The generated trajectories take into account aircraft’s performance parameters, altitude-, speed- and time constraints, given procedures, and the expected weather conditions, as forecasted. Based on these trajectories, a traffic scheduler can generate and guarantee conflict-free traffic – as long as every aircraft sticks to the plan. However, even the most accurate trajectory becomes unrealizable when significant disturbances arise that were not foreseeable at prediction time. Uncertainties like imprecise weather forecasts, inaccurate departure times, and issues with delayed passengers influence a direct implementation of pre-planned 4D schedules in practice. If such disturbing events are rare, the overall plan may be adapted. Too many disturbances might ruin the whole schedule though. This article discusses the trade-off between built-in robustness in the initial planning stage and the obtainable efficiency. Resilience is added by increasing the separation between trajectories. Assuming that the mandatory distance for guaranteeing safe operations remains constant, the additional separation provides freedom for aircraft following their trajectories.

Item URL in elib:https://elib.dlr.de/95290/
Document Type:Article
Title:Designing freedom into trajectory-based operations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kuenz, AlexanderAlexander.Kuenz (at) dlr.deUNSPECIFIED
Schwoch, GunnarGunnar.Schwoch (at) dlr.deUNSPECIFIED
Korn, BerndBernd.Korn (at) dlr.deUNSPECIFIED
Date:2015
Journal or Publication Title:Proceedings of the Institution of Mechanical Engineers Part G-Journal of Aerospace Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Editors:
EditorsEmail
Di Vito, Vittoriov.divito@cira.it
Publisher:SAGE Publications
Series Name:Air Traffic Management
ISSN:0954-4100
Status:Published
Keywords:Trajectory-based operations, conflict detection and resolution, flight management system, freedom margins, optimized trajectories
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Efficient Flight Guidance
Location: Braunschweig
Institutes and Institutions:Institute of Flight Control > Pilot Assistance
Deposited By: Kuenz, Dr. Alexander
Deposited On:06 Mar 2015 18:09
Last Modified:06 Sep 2019 15:21

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