scholarly journals Utilization of Flexible Airspace Structure in Flight Efficiency Optimization

1970 ◽  
Vol 25 (2) ◽  
pp. 109-118 ◽  
Author(s):  
Tomislav Mihetec ◽  
Sanja Steiner ◽  
Denis Odić
Keyword(s):  
Previous Analysis ◽  
Flexible Structures ◽  
Air Traffic ◽  
Air Transport ◽  
Traffic Flows ◽  
Traffic Demand ◽  
Efficiency Optimization ◽  
Flight Operations ◽  
South Axis ◽  
Air Carriers

With increasing air traffic demand in the Pan-European airspace there is a need for optimizing the use of the airspace structure (civilian and military) in a manner that would satisfy the requirements of civil and military users. In the area of Europe with the highest levels of air traffic (Core area) 32% of the volume of airspace above FL 195 is shared by both civil and military users. Until the introduction of the concept of flexible use of airspace, flexible airspace structures were 24 hours per day unavailable for commercial air transport. Flexible use of airspace concept provides a substantial level of dynamic airspace management by the usage of conditional routes. This paper analyses underutilization of resources, flexible airspace structures in the Pan-European airspace, especially in the south-eastern part of the traffic flows (East South Axis), reducing the efficiency of flight operations, as result of delegating the flexible structures to military users. Based on previous analysis, utilization model for flexible use of airspace is developed (scenarios) with defined airspace structure. The model is based on the temporal, vertical, and modular airspace sectorisation parameters in order to optimize flight efficiency. The presented model brings significant improvement in flight efficiency (in terms of reduced flight distance) for air carriers that planned to fly through the selected flexible airspace structure (LI_RST-49).

A regression model for terminal airspace delays

2017 ◽  
Vol 121 (1239) ◽  
pp. 680-692 ◽  
Author(s):  
F. Aybek Çetek ◽  
Y.M. Kantar ◽  
A. Cavcar
Keyword(s):  
Regression Model ◽  
Traffic Flow ◽  
Traffic Management ◽  
Air Traffic ◽  
Fast Time ◽  
Total Delay ◽  
Traffic Demand ◽  
Flight Operations ◽  
Entry Points ◽  
Air Traffic Flow

ABSTRACTAir Traffic Management (ATM) research generally focuses on achieving a safer, more effective and economical air traffic system. The current airspace system has become increasingly strained as the demand for air travel has steadily grown. Innovative, proactive and multi-disciplinary approaches to research are needed to solve flight congestion and delays as a consequence of this rapid growth. As a result of this growth, air traffic flow becomes more complex, especially in Terminal Airspaces (TMA) where climb and descent manoeuvres of departing and arriving flights take place around airports. As air traffic demand exceeds the capacity in a TMA, the resultant congestion leads to delays that spread all over the system. Therefore, the reduction of delays is critical for airspace designers to increase customer satisfaction and the perception of service quality. Numerous studies have been conducted to reduce delays within TMAs. This research focuses on defining the causes of delays quantitatively through statistical analysis. The first step was to create a fast-time simulation model of sample airspace for collecting delay data. After building up this model using the SIMMOD fast-time ATM simulation tool, simulation experiments were run to produce various traffic scenarios and to generate traffic delay data. The number of airports, entry points, fixes and flight operations in airspace and the probability of wide-body aircraft were considered as independent variables. The correlations between the considered variables were analysed, and the total delay data was modelled using a linear regression model. The findings of regression model present a statistical approach for airspace designers and air traffic flow planners.

scholarly journals Prospects of Air Traffic Management in South Eastern Europe

2012 ◽  
Vol 22 (4) ◽  
pp. 293-302 ◽  
Author(s):  
Sanja Steiner ◽  
Tomislav Mihetec ◽  
Ana Božičević
Keyword(s):  
Eastern Europe ◽  
Development Strategy ◽  
Traffic Management ◽  
Air Traffic Management ◽  
Legal Framework ◽  
Air Traffic ◽  
Air Transport ◽  
South Eastern ◽  
Flight Operations ◽  
South Eastern Europe

In the forthcoming period the European air traffic management will handle double flight operations than today – from 1.7 to 2.1 higher traffic level in 2025 than in 2005 [1]. The problem of the European airspace fragmentation should be solved by the comprehensive dynamic harmonization programs, which can contribute to effective increase of airspace capacity and increase of air transport efficiency. The main objective of the development strategy refers to the implementation of reformation processes of the European air traffic management system through functional ATM1 regionalization. Encouraged by the Single European Sky project, and through airspace de-fragmentation, numerous projects have been initiated by Eurocontrol in cooperation with the European Commission. One of them is establishing of the Functional Airspace Block in South Eastern Europe. The implementation of regulatory, institutional and legal framework of the Single European Sky FAB2 would ensure the expansion of the European air traffic market to South Eastern Europe, counting over 500 million potential users [2]. Croatia and all the other countries in the region have to adopt the provisions of ECAA3 Agreement and EU air transport acquis in their national legislation. This paper specifies the main determinants of the strategic development as well as the key factors which influence the European air traffic dynamics. The paper elaborates the indicators and significant elements of the required ATM reforms in South Eastern Europe on the samples of six ANSPs according to ECAA Agreement and EU acquis. KEYWORDS: Single European Sky, European Common Aviation Area, Air Traffic Management, South Eastern Europe, Functional Airspace Block

scholarly journals Variable Speed Limit and Ramp Metering for Mixed Traffic Flows: A Review and Open Questions

2021 ◽  
Vol 11 (6) ◽  
pp. 2574
Author(s):  
Filip Vrbanić ◽  
Edouard Ivanjko ◽  
Krešimir Kušić ◽  
Dino Čakija
Keyword(s):  
Traffic Control ◽  
Ramp Metering ◽  
Transport Infrastructure ◽  
Control Algorithms ◽  
Speed Limit ◽  
Mixed Traffic ◽  
Traffic Flows ◽  
Variable Speed ◽  
Variable Speed Limit ◽  
Traffic Demand

The trend of increasing traffic demand is causing congestion on existing urban roads, including urban motorways, resulting in a decrease in Level of Service (LoS) and safety, and an increase in fuel consumption. Lack of space and non-compliance with cities’ sustainable urban plans prevent the expansion of new transport infrastructure in some urban areas. To alleviate the aforementioned problems, appropriate solutions come from the domain of Intelligent Transportation Systems by implementing traffic control services. Those services include Variable Speed Limit (VSL) and Ramp Metering (RM) for urban motorways. VSL reduces the speed of incoming vehicles to a bottleneck area, and RM limits the inflow through on-ramps. In addition, with the increasing development of Autonomous Vehicles (AVs) and Connected AVs (CAVs), new opportunities for traffic control are emerging. VSL and RM can reduce traffic congestion on urban motorways, especially so in the case of mixed traffic flows where AVs and CAVs can fully comply with the control system output. Currently, there is no existing overview of control algorithms and applications for VSL and RM in mixed traffic flows. Therefore, we present a comprehensive survey of VSL and RM control algorithms including the most recent reinforcement learning-based approaches. Best practices for mixed traffic flow control are summarized and new viewpoints and future research directions are presented, including an overview of the currently open research questions.

Potential Traffic Demand in the London Area

1965 ◽  
Vol 69 (652) ◽  
pp. 211-215 ◽  
Author(s):  
A. H. Watson
Keyword(s):  
Air Traffic ◽  
Traffic Demand ◽  
The Third ◽  
Air Space

The June 1963 Report of the Inter-Departmental Committee on the Third London Airport concluded that a third London Airport would be required in the early 1970's, and possibly a fourth soon after 1980. It also brought out that because of the large amounts of air space required for the sequencing areas and approach paths of each airport, and because of limitations imposed by the positioning of the main air traffic routeings, the choice of possible sites within reasonable distance of Central London for the third airport was severely restricted. In a postscript to the Report, it was recognised that after the third airport has taken over a further block of air space, the difficulty of siting a fourth airport would be even more severe.

scholarly journals Air transport liberalisation in the European Union and its impact on development of the civil aviation sector in Poland

2009 ◽  
Vol 12 (3) ◽  
pp. 45-58 ◽  
Author(s):  
Renata Pisarek
Keyword(s):  
European Union ◽  
Market Structure ◽  
European Community ◽  
Air Traffic ◽  
Air Transport ◽  
Civil Aviation ◽  
Special Focus ◽  
The European Union ◽  
Traffic Dynamics ◽  
Structure Changes

The objective of this paper is to present an overview of the process of air transport liberalisation within the European Community and its influence on development of the aviation market in Poland. The paper describes the stages of air transport liberalisation in the European Community and its implementation to the Polish market. The special focus is given to problems of existing effects of air transport liberalisation and perspectives of its development. The study primarily intends to examine market structure changes of the Polish civil aviation sector and air traffic dynamics over the years of Polish integration with the European Union, presenting the most up-to-date available statistics

The Economics of Air Traffic Control

1980 ◽  
Vol 33 (1) ◽  
pp. 23-29
Author(s):  
Angus Hislop
Keyword(s):  
Traffic Control ◽  
Air Traffic Control ◽  
Air Traffic ◽  
Air Transport ◽  
Civil Aviation ◽  
Department Of Transportation ◽  
Private Industry ◽  
The Us ◽  
The Uk

This paper is based mainly on a study carried out in 1976/7 for the UK Department of Industry into the long-term development of air traffic control systems in Europe by a team drawn from the Civil Aviation Authority, the Royal Signals and Radar Establishment and private industry, in which Coopers and Lybrand provided the economic expertise.Until the early 1970s, air traffic control was almost completely neglected by air transport economists. Economists contributed to the planning of airports and airline operations but not to the third facet of the air transport system. However, in 1970–1, in conjunction with a programme of expansion and improvement of the country's airports and airways, the US Department of Transportation launched a major study of the airport and airways system. This was designed to establish an equitable charging policy between the different categories of user but in the event its recommendations in this area have only recently begun to be followed.

scholarly journals Low-cost air traffic as a determinant of tourism development

2021 ◽  
Vol 10 (19) ◽  
pp. 43-57
Author(s):  
Filip Bugarčić ◽  
Marijana Bugarčić
Keyword(s):  
Information Technologies ◽  
Low Cost ◽  
Air Traffic ◽  
Air Transport ◽  
Passenger Transport ◽  
Economic Activities ◽  
Doing Business ◽  
Global Trend ◽  
The Cost ◽  
Further Development

Air transport as an organized form of service provision, especially in passenger transport, can be important for increasing the number of foreign tourists. Globalization and the development of information technologies have contributed to the development of the business model of airlines, which has enabled a significant reduction in the cost of air travel and the accelerated development of this industry. Therefore, the emphasis is placed on the global trend of development of low-cost airlines, their way of doing business and the effects they have on the development of tourism. The increase in the number of low-budget airlines has multiple effects on the development of international tourism and passenger transport due to cheaper transport, which is made possible by improving the competitiveness of air transport after its deregulation. In addition, lower prices and a better logistical position can contribute to an increase in the number of foreign tourists and a higher income for this industry, as well as other related economic activities. The aim of this paper is to examine through theoretical and empirical insight whether there is an impact of low-cost airlines on the volume of air traffic and the intensity of passenger transport, with an emphasis on existing literature, as well as empirical confirmation on the example of Serbia. The conducted research has important implications, since in pandemic conditions, further development of low-budget airlines is expected to contribute to the recovery of air traffic and tourism.

scholarly journals Seasonality in Air Traffic and Incidence of Dangerous Occurrences in the Polish Air Transport Market in 2010-2017

2021 ◽  
Vol XXIV (Special Issue 4) ◽  
pp. 87-97
Author(s):  
Jaroslaw Kozuba ◽  
Stanislaw Sirko ◽  
Bartłomiej Czerkowski ◽  
Robert Wieszala ◽  
Ryszard Szynowski
Keyword(s):  
Air Traffic ◽  
Air Transport
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