1,720,981 research outputs found
Interim evaluation of the SESAR Joint Undertaking (2014-2016) operating under Horizon 2020
No full textThis report is the interim evaluation of the SESAR Joint Undertaking (SJU) in executing
the SESAR2020 programme from 2014 to 2016 as required by Article 32(2) of the
Council Regulation (EU) No 1291/201 and Article 7 of the Council Regulation (EC) No
219/2007, amended by Regulation (EU) No 721/2014.
The evaluation was conducted between January 2017 and June 2017 by a team of
independent experts and is based on expert opinion, relevant documentation, survey
results, stakeholder interviews and data analysis.
The analysis complies with the requirements of the revised evaluation guidelines of the
Better Regulation Package and covers the five main evaluation criteria: relevance,
efficiency, effectiveness, coherence, and EU added value. In addition, the criteria:
openness and transparency are considered
GIS-based tool to support civil aviation management during explosive volcanic eruptions
No full textWe present a software tool (yet under development) for short and long-term civil aviation management
in case of explosive volcanic eruptions. The tool covers the needs of stakeholders involved
in civil aviation management and interested in taking decisions based on a range of possible tephra
dispersal scenarios and/or ash dispersal forecasts. The GIS-based tool allows to display hazard and
vulnerability information, overlap maps to and estimate expected impacts (airports disrupted, routes
cancelled, etc.). We present the structure of the tool underlining the scientific background and
technical aspects of each element.
Hazard and vulnerability data are stored in a spatial database specifically designed to store deterministic
and probabilistic data sources. The database has a central role for the risk management process,
acting as a repository of maps to be used by the stakeholders for different purposes. To our knowledge,
this is the first “ad hoc” database proposed to store information about tephra dispersal hazard
and vulnerability.
The tool allows to overlap hazard and vulnerability data and estimate expected impacts through
spatially-based rules. Vulnerability and impact assessments are implemented by means of plug-ins
embedded in the GIS friendly interface. The analysis has been automated for the European air traffic
management during explosive eruptions. Results are relevant for the long-term risk assessment in
the European area. Regarding short-term, we present an example of application during an explosive
eruption at an active Icelandic volcano.
This GIS-based tool improves civil aviation management by automating short and long-term analyses
and making them faster and repeatable. Although this is only a prototype and still needs further
development, the up-to-date work can be a relevant contribution to the scientific community
A GIS-based tool to support air traffic management during explosive volcanic eruptions
No full textWe present a methodology to estimate the impacts of volcanic ash dispersal on civil avia- tion and a software tool aimed at assisting air traffic management in the event of ash-con- taminated airspace. The tool merges atmospheric dispersal model forecasts with air traffic data in a map-based platform to produce tables and maps showing potentially affected air- ports, flights and airspace sectors. Impacts can be estimated based on user-defined ash con- centration thresholds, or on the amount of ash potentially ingested by airplanes flying through diluted ash clouds. The impact can be assessed on single Flight Level (FL) slabs, or across the whole vertical airspace. The procedure is automated within a Geographical Information System (GIS). For illustrative purposes, we estimate the potential impacts on the European air traffic of an eruption from Katla volcano in Iceland, assuming a ‘‘worst- case’’ meteorological scenario. We compare the capabilities of the tool with those of similar existing software and justify our design choices. Finally, we discuss the use of the tool in current and future air traffic management strategies during explosive volcanic eruptions
ITS solutions for air cargo revenue management
No full textIn this work we present Revenue Management applications for air cargo and discuss the most relevant issues that currently limit their effectiveness. We explain how these concerns may be tackled by decreasing uncertainty on customer data and improving communication along the supply chain and we illustrate how integration with Intelligent Transportation Systems may play a key role in delivering such improvements
Civil aviation management during explosive volcanic eruptions: A survey on the stakeholders' perspective on the use of tephra dispersal models
No full textImpacts of explosive volcanic eruptions on civil aviation were reconsidered after the 2010 Eyjafjallajökull erup- tion in Iceland, which caused unprecedented disruptions of air traffic operations in Europe. During and after the aviation breakdown of April–May 2010, communication between the involved stakeholders was recognized as a major concern. Due to the complexity and multidisciplinary nature of the topic, a great number of actors are involved, which often have little interaction outside these exceptional events. In this work, we aim at identifying the relationships between the stakeholders involved in aviation management during eruptions, as well as their needs and priorities. We perform an anonymous on-line survey, focused mainly on the use of tephra dispersal models for civil aviation purposes. We collect feedback on recent developments including our current impact assessment research, which produced a GIS-based software tool to estimate impacts on aviation based on tephra dispersal forecasts. Answers allow identifying stakeholders' requirements on ash dispersal forecasts and their use for aviation management purposes. We underline the main differences between three homogeneous groups (aviation managers and employees, modellers and field scientists, other stakeholders) and identify main end- user requirements for developing tools similar to ours. This work provides useful insights for the development of tools to support aviation stakeholders during volcanic eruption
A GIS-based tool for the estimation of impacts of volcanic ash dispersal on European air traffic
No full textImpacts of volcanic ash on air traffic have been reconsidered in the aftermath of the 2010 eruption of Eyjafjallajokull volcano (Iceland), which caused great impacts to the European air traffic network. We present a GIS-based methodology to estimate the impacts of tephra dispersal from explosive volcanic eruptions aimed at improving air traffic management
in case of ash-contaminated airspace. We use the 2010 Eyjafjallajokull eruption as a case study with two main objectives: to introduce the methodology and to perform a posteriori analysis of the 2010 aviation breakdown. Modelling results of atmospheric tephra dispersal over Europe build upon a reanalysis dataset of meteorological and volcanological parameters. Given that there is still no consensus on thresholds of ash concentration that is critical for flight safety, the methodology takes into account several ash concentration values. Results are hourly tables and
maps containing information on potentially affected airports and routes at different Flight Levels (FLs). This allows estimating impacts at a high temporal frequency. We also compute dailyaccumulated impacts for each FL. We compare our results with the 2010 impacts. Furthermore, advantages and disadvantages of this methodology are discussed and compared with similar existing tools. Finally, we underline possible improvements of the methodology and describe further work
Reducing ATFM delays through strategic flight planning
Full text linkThis paper presents an integer programming model for strategic redistribution of flights so as to respect nominal sector capacities, in short computation times for large-scale instances. The main contribution lies in the combination of tackling large-scale strategic flight planning using hard capacity constraints, while considering the whole network (i.e., both airports and sectors). Real historic data for network and traffic description are used for our test instance. Strategic and tactical impact assessments show that early flight planning can lead to the reduction of delays and their costs, showing potential for actual implementation
Peak-load pricing for the European air traffic management system using modulation of en-route charges
Full text linkThis paper extends the use of peak-load pricing (PLP) to the context of the European Air Traffic Management system, as EU regulation No 391/2013 allows the modulation of en-route charges to avoid network capacity-demand imbalance in a specific area or on a specific route at specific times. In particular, we propose a centralised approach to PLP (CPLP) where a Central Planner (CP) is responsible for setting en-route charges on the network and Airspace Users (AUs) assess the routing of each flight. Set en-route charges should guarantee that air navigation service providers (ANSPs) are able to recover their operational costs, and that AUs perform their flights avoiding imbalances between demand and available airspace capacity. Like in the current charging system, in CPLP AUs react to en-route charges (which are imposed by CP instead of ANSPs) by choosing alternative and cheaper routes. Hence, we model this relationship between the CP and the AUs as a Stackelberg game where a leader (CP) makes his/her decision first, with complete knowledge on how the follower(s) (AUs) would react to it. The Stackelberg equilibrium is obtained by means of an optimisation problem formulated as a bilevel mixed-integer linear programming model, where the CP sets, for each ANSP, one peak and one off-peak en-route charge and the AUs make their routing choice. Preliminary results on real data instances on a regional scale are presented
Airport slot allocation: performance of the current system and options for reform. Towards a comprehensive performance framework
No full textACCESS (www.access-sesar.eu) is a research project within SESAR WPE which addresses demand and capacity management at congested airports, focusing on market-based mechanisms for the strategic allocation of airport capacity. Market mechanisms are expected to provide the right incentives for a more efficient use of the available capacity, but they also raise a number of concerns, from the potentially negative impact on airline operating costs to market failures. There is therefore a need for a comprehensive assessment of different market designs. In this paper we introduce some considerations about the conditions to be met by a performance framework to allow a sound comparative evaluation of different slot allocation mechanisms, we outline a preliminary proposal for a set of performance areas and indicators, and discuss the potential impact of different possible reforms of the slot allocation system
Tradable Mobility Permits for the Strategic Allocation of Air Traffic
No full textCurrent strategic decisions involving air traffic flows are limited to the allocation of airport slots. In this work, a first strategic market-based mechanism for the allocation of en route resources, i.e., sector capacity, is proposed. Identifying en route capacity shortages at this phase can lead to strategic actions to reduce flight delays on the day of operations. Tradable mobility permits previously developed for roadway transportation are analyzed and adapted to the air transport case. A trading mechanism for the strategic alleviation of air traffic congestion that uses time-place specific permits is proposed, providing alternative implementations. We call this new approach Tradable Flight Permit System (TFPS). An example of its use is illustrated, showing how it can lead to cost reductions for the airlines competing for a single sector access permit. We also highlight the improvements it can provide compared to current practice and a variety of alternative methods
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