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Abstract: Civil aviation has been confronted with the problem of matching its capacity to growing demand long term. This has been a particularly important issue at some large European and U.S. airports where increasing operational, economic, and, particularly, environmental constraints have affected expansion and development. The long-term matching of capacity to demand at London Heathrow Airport in England is discussed. This analysis includes predicting airport demand relative to annual number of aircraft movements and number of passengers, designing solutions for providing capacity, and generating scenarios for long-term matching of capacity to demand. The results indicate that until the year 2020 the airport will permanently struggle with congestion both airside and landside.
Keywords: civil aviation, airport system, airport capacity, London Heathrow airport, aviation
Published in DKUM: 05.06.2012; Views: 1311; Downloads: 145
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Abstract: Assessment and operationalisation of the concept of a sustainable air transport system have been recognised recently as an important but complex research, operational and policy tasks. In the scope of the current academic efforts to properly address these problems, this paper develops methodology for assessing the sustainability of an air transport system. The methodology is based on the indicator systems of sustainability defined for the operational, economic, social, and environmental dimensions of the system performance. The measures are defined for each indicator to express the systemeffects (benefits) and impacts (costs) for particular actors such as the system users--air travellers, air transport operators, aerospace manufacturers, local community members, local and central government. They are assumed to evaluate the system sustainability with respect to the values of selected indicators. Generally, for all of them the system will be sustainable if the indicators representing effects (benefits) are as high as possible and increase with increasing system output, and the indicators representing impacts (costs) are as low as possible and decrease with increasing system output.
Keywords: commercial aeronautics, transportation, aerospace industries, travelers, economics
Published in DKUM: 05.06.2012; Views: 2962; Downloads: 26
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Abstract: The paper deals with the concept, analysis and measuring of the quality of services offered by the Trans European Railway Network (TERN). A sub-network serving the passengers travelling over the EU (European Union) and some of the non-EU regions are considered. Two sets of network attributes influencing the quality of services are analysed. One set of network physical attributes is represented by the length of the rail lines connecting specific origins and destinations of the passengers. The other set is represented by the time-based attributes used to measure the quality of services offered to the users. These are: travel speeds along particular lines (routes), and how the passenger's schedule delays depend on the train frequencies (e.g. number of trains offered on particular routes of the network in a given period of time). Considered as a common entity these attributes significantly influence the average passenger's travel time (and speed) which, together with out-of-pocket cost paid for travel, have appeared to be the most important criteria influencing the choice of transport mode.
Keywords: Trans European Railway Network, passenger transport, quality of services, travel speed, schedule day
Published in DKUM: 05.06.2012; Views: 2516; Downloads: 36
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Abstract: The objective of the research described in this paper was to produce a model for the analysis of terminal airspace capacity and the sensitivity of this capacity to the parameters which influence it. The model developed is based onthe concept of an expected ultimate capacity and applies to arriving traffic under saturation conditions i.e. a constant demand for service. It is possible to use the model for planning and operational purposes: for the computation of terminal airspace capacity, the separation of aircraft at the terminal entry gates so as to provide maximum capacity, and for heuristic optimization of arriving aircraft trajectories through the terminal airspace. For a sensitivity analysis the model allows for changes in terminal airspace geometry, runway(s) in use, arriving aircraft trajectories, arriving traffic distribution between the terminal airspace entry gates, aircraft type mix, aircraft velocities and air traffic control separation rules.
Keywords: air traffic, capacity model, terminal traffic
Published in DKUM: 05.06.2012; Views: 1808; Downloads: 106
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Abstract: This paper deals with the analysis and modelling of behaviour of the Western European airlines during the first phase of the gradual liberalisation of the EU (European Union) aviation market. The framework for monitoring this behaviour and appropriate methodology for registering significant changes in the airline industry, specific airlines, and the aviation market itself has been developed. Three classes of empirical models have been estimated: airline growth and financial performances, airline mergings and alliances by holding of equity stakes in partners, and airline relationships (cooperation and/or competition) on the EU air route network consisting of five sub-models. The EU airline sub-models are: market share, market concentration, air travel demand, quality of services, and pricing policy. The least-square regression technique has been applied over the cross-sectional data for making the empirical estimates.
Keywords: European aviation, liberalisation of the aviation market, Wester European airlines, externalities
Published in DKUM: 05.06.2012; Views: 1466; Downloads: 102
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