OPTIMAL REASSIGNMENT OF FLIGHTS TO AIRPORT BAGGAGE UNLOADING CAROUSELS IN RESPONSE TO TEMPORARY MALFUNCTIONS

Being able to efficiently reassign outbound flights to baggage unloading carousels (BUCs) following temporary malfunctions is very important for airport operators. This study proposes an optimization model with a heuristic to solve the carousel reassignment problem. The objective is to minimize the total disturbance and overlapping time caused by the reassignment of outbound flights. A heuristic is developed to efficiently solve large-sized instances. The proposed approach is then applied to solve real-world instances of the problem at a major international airport in Taiwan. The computation time is about two minutes. The objective value obtained with the heuristic is more than 15% better than that obtained by the manual approach currently used by the operator. The improvement is gained mostly from the reduction in total temporal disturbance and overlapping time. The proposed approach could assist the operator in reassigning outbound flights to BUCs in response to malfunctions

The design of an airport terminal in Somerset East, province of the Eastern Cape

In addressing the stunted growth of the town of Somerset East, the treatise suggests that the model of an aerotropolis be used as means to spur economic growth an development of the town. The treatise proposes the design of an air terminal facility, to act as a catalyst, for which growth of a mini-Aerotropolis will happen around as well as a northern gateway for tourism to two of South Africa's popular national parks; Addo Elephant National Park and Mountain Zebra National park. The challenge being the creation of a building type that incorporates several would be segregated activities into one hybrid that generates public space within an interface or transcient space

PROFESSIONAL ENGLISH AVIATION ACTIVITIES

Навчальний посібник з англійської мови професійного спрямування. Складається з тематичних розділів, що містять базову термінологію, автентичні тексти, комплекс комунікативних лексико-граматичних вправ, передтекстовий термінологічний англо-український вокабуляр та додаткові тексти для самостійного опрацювання. Призначений для студентів вищих авіаційних навчальних закладів

A Statistical Review of European Carriers’ Flight Delays and the Assessment of Delay Factors

Disruption is an inherent risk that might arise because of the complexity and dynamic nature of air transport operations. In the aviation business, disruption can happen for a variety of reasons, including poor weather, strikes, and political factors. This study aims to analyse flight delays that European airlines encounter and assess the dependencies between different operation parameters through correspondence analysis in contingency tables that are visually represented using correspondence maps. This study examined data from selected European airlines between 2018 and 2022, which contained information on the length of delay, the reasons associated with it, and the specific characteristics of each flight, such as the type of flight, the type of aircraft, and the scheduled departure time. The result showed that even though there was a large decrease in the overall number of flights operated during the pandemic period in 2020 and 2021, the percentage of delayed flights still varies above 55%. Long-haul flights and larger aircraft tend to have longer delays. Except for 2020 and 2021, the percentage of delayed flights for different lengths of delays and scheduled departure times did not significantly change across the review years. The evaluation reason for delay appeared to increase with time due to airport or authority restrictions, while there was a tendency for the number of delayed flights related to technical aircraft, equipment, and ground operations to decrease. By developing an analysis of the root causes of flight delays using case studies that have already been published by different researchers and determining the degree to which an operating parameter contributes, we may provide guidelines for future studies that will uncover ways to minimize flight delays

Airport gate assignment with airline preferences

Das airport gate assignment problem gewann in den letzten Jahrzehnten aufgrund der steigenden Dichte des Flugverkehrs und den daraus resultierenden dichter werdenden Flugplänen der Fluglinien immer mehr an Bedeutung. Das in dieser Magisterarbeit vorgestellte mathematische Modell konzentriert sich einerseits auf eine gute/bestmögliche Erfüllung der Präferenzen der Fluglinien für die gewünschten Parkpositionen, sowie andererseits auf die Erstellung einer Abstellzuordnung die so unanfällig wie möglich in Bezug auf Flugverspätungen ist. Die implementierte Metaheuristik wurde zuerst auf einige kleinere Testinstanzen und in weiterer Folge auf eine große Testinstanz, die einen 24 Stunden Flugbetrieb des Flughafen Wiens widerspiegelt, angewendet. Verglichen mit einem exakten Verfahren liefert die Metaheuristik, bei einem Bruchteil der benötigten Rechenzeit, sehr gute (teilweise auch bessere) Ergebnisse.The airport gate assignment problem is an important part of airport oriented research and gained more and more in importance during the last decades due to growing air traffic and subsequent tighter airline schedules. The new deterministic model presented in this thesis focuses on the satisfaction of airline preferences as well as on the generation of a robust schedule which aims to be as insusceptible as possible against aircraft delays. First applied to small instances derived from real-world data and then applied to a large instance containing a 24-hour traffic progression at Vienna International Airport, the implemented metaheuristic Large Neighborhood Search showed very good results regarding runtime and solution quality compared to benchmarks created by a mixed integer program solver

Designing airport passanger buildings for the 21st century : matching configuration and internal transport systems

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1995.Includes bibliographical references (p. 157-161).by Chai-Teck Phua.M.S

Optimal Reassignment of Flights to Gates Focusing on Transfer Passengers

This dissertation focuses on the optimal flight-to-gate assignment in cases of schedule disruptions with a focus on transfer passengers. Disruptions result from increased passenger demand, combined with tight scheduling and limited infrastructure capacity. The critical role of gate assignment, combined with the scarcity of models and algorithms to handle passenger connections, is the main motivation for this study. Our first task is to develop a generalizable multidimensional assignment model that considers the location of gates and the required connection time to assess the success of passenger transfers. The results demonstrate that considering gate location is critical for assessing of the success of a connection, since transfer passengers contribute significantly to total cost. We then explore the mathematical programming formulation of the problem. First, we compare different state-of-art mathematical formulations, and identify their underlying assumptions. Then, we strengthen our time-index formulation by introducing valid inequalities. Afterwards, we express the cost of passenger connections using an aggregating formulation, which outperforms the quadratic formulation and is consistently more efficient than network flow formulations when the cost of successful connections is considered. In the last part of the dissertation, we embed the formulation in an MIP-based metaheuristic framework using Variable Neighborhood Search with Local Branching (VNS-LB). We explore the key notion of a solution neighborhood in the context of gate assignment, given that transfer passengers are our main consideration. Our implementation produces near-optimal results in a low amount of time and responds reasonably to sensitivity analysis in operating parameters and external conditions. Furthermore, VNS-LB is shown to outperform the Local Branching heuristic in terms of solution quality. Finally, we propose a set of extensions to the algorithm which are shown to improve the quality of the final solution, as well as the progress of the optimization procedure as a whole. This dissertation aspires to develop a versatile tool that can be adapted to the objectives and priorities of practitioners, and to provide researchers with an insight of how the features of a solution are reflected in the mathematical formulation. Every idea relying on these principles should be a promising path for future research