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Dynamic Airline Scheduling And Robust Airline Schedule De Peaking
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Book Synopsis Dynamic Airline Scheduling and Robust Airline Schedule De-peaking by : Hai Jiang
Download or read book Dynamic Airline Scheduling and Robust Airline Schedule De-peaking written by Hai Jiang and published by . This book was released on 2006 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) We complement this dynamic re-optimization approach with models and algorithms to de-peak existing hub-and-spoke flight schedules so as to maximize future dynamic scheduling capabilities. In our robust de-peaking approach, we begin by solving a basic de-peaking model to provide a basis for comparison of the robust de-peaked schedule we later generate. We then present our robust de-peaking model to produce a schedule that maximizes the weighted sum of potentially connecting itineraries and attains at least the same profitability as the schedule produced by the basic de-peaking model. We provide several reformulations of the robust de-peaking model and analyze their properties. To address the tractability issue, we construct a restricted model through an approximate treatment of the profitability requirement. The restricted model is solved by a decomposition based solution approach involving a variable reduction technique and a new form of column generation. We demonstrate, through experiments using data from a major U.S. airline, that the schedule generated by our robust de-peaking approach achieves improved profitability.
Book Synopsis Degradable Airline Scheduling by : Laura Sumi Kang
Download or read book Degradable Airline Scheduling written by Laura Sumi Kang and published by . This book was released on 2004 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a methodology for deriving robust airline schedules that are not vulnerable to disruptions caused by bad weather. In this methodology, the existing schedule is partitioned into independent sub-schedules or layers - prioritized on the basis of revenue - that provide airlines with a clear delay/cancellation policy and may enable them to market and sell tickets for flight legs based oil passenger preference for reliability. We present three different ways to incorporate degradability into the scheduling process: (1) between flight scheduling and fleet assignment (degradable schedule partitioning model), (2) with fleet assignment (degradable fleet assignment model), and (3) with aircraft routing (degradable aircraft routing model). Each problem is modeled as an integer program. Search algorithms are applied to the degradable aircraft routing model, which has a large number of decision variables. Results indicate that we can successfully assign flight legs with high revenue itineraries in the higher priority layer without adding aircraft or changing the schedule, and differentiate the service quality for passengers in different priority layers. Passengers in the high priority layers have much less delay and fewer cancellations than passengers in low priority layers even during the bad weather. In terms of recovery cost, which includes revenue lost, operational cost saving and crew delay cost, degradable airline schedules can save up to $30,000 per day. Degradable airline schedules have cost saving effect, especially when an airport with a high capacity reduction in bad weather is affected by bad weather.
Book Synopsis Dynamic Scheduling in Airline Operations by : Ollie James Akel
Download or read book Dynamic Scheduling in Airline Operations written by Ollie James Akel and published by . This book was released on 1967 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: Although air transportation has been characterized by rapid development in vehicle design and performance, methods of airline management in the area of vehicle scheduling and control have advanced at a much slower pace. Because of high costs of operation and the pressures of current competition and government controls, effective and efficient use of aircraft is becoming an increasingly essential objective. The goal is to achieve an optimal balance between net revenue to the airline and improved level of service to the customer. Improved return implies higher load factors and air - craft utilization whereas improved passenger service necessitates reduced waits and increased frequencies. These are often conflicting aims. New techniques must be mobilized to give management more useful and adaptive methods of operating and controlling an air transportation system. Perhaps the particular requirements -1- of a very short-haul high density transportation system will lead to more demand responsive approaches. It is with this motivation that this study of dynamic dispatching strategy is undertaken.
Book Synopsis Dynamic scheduling in airline operations by :
Download or read book Dynamic scheduling in airline operations written by and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Robust and Integrated Airline Scheduling by : Oliver Weide
Download or read book Robust and Integrated Airline Scheduling written by Oliver Weide and published by . This book was released on 2009 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Robust Airline Schedule Planning by : Claudine Biova Agbokou
Download or read book Robust Airline Schedule Planning written by Claudine Biova Agbokou and published by . This book was released on 2004 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major airlines aim to generate schedules that maximize profit potential and satisfy constraints involving flight schedule design, fleet assignment, aircraft maintenance routing and crew scheduling. Almost all aircraft and crew schedule optimization models assume that flights, aircraft, crews, and passengers operate as planned. Thus, airlines typically construct plans that maximize revenue or minimize cost based on the assumption that every flight departs and arrives as planned. Because flight delays and cancellations result from numerous causes, including severe weather conditions, unexpected aircraft and crew failures, and congestion at the airport and in the airspace, this deterministic, optimistic scenario rarely, if ever, occurs. In fact, schedule plans are frequently disrupted and airlines often incur significant costs in addition to those originally planned. To address this issue, an approach is to design schedules that are robust to schedule disruptions and attempt to minimize realized, and not planned, costs. In this research, we review recovery approaches and robustness criteria in the context of airline schedule planning. We suggest new approaches for designing fleet assignments that facilitate recovery operations, and we present models to generate plans that allow for more robust crew operations, based on the idea of critical crew connections. We also examine the impact on robustness of new scheduling practices to debank hub airports.
Book Synopsis Dynamic Airline Scheduling by : Valdemar Warburg
Download or read book Dynamic Airline Scheduling written by Valdemar Warburg and published by . This book was released on 2007 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Airline Scheduling and Air Traffic Control by : Chiwei Yan
Download or read book Airline Scheduling and Air Traffic Control written by Chiwei Yan and published by . This book was released on 2017 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: The global airline industry is a multi-stakeholder stochastic system whose performance is the outcome of complex interactions between its multiple decisions-makers under a high degree of uncertainty. Inadequate understanding of uncertainty and stakeholder preferences leads to adverse effects including airline losses, delays and disruptions. This thesis studies a set of topics in airline scheduling and air traffic control to mitigate some of these issues. The first part of the thesis focuses on building aircraft schedules that are robust against delays. We develop a robust optimization approach for building aircraft routes. The goal is to mitigate propagated delays, which are defined as the delays caused by the late arrival of aircraft from earlier flights and are the top cause of flight delays in the United States air transportation system. The key feature of our model is that it allows us to handle correlation in flight delays explicitly that existing approaches cannot handle efficiently. We propose an efficient decomposition algorithm to solve the robust model and present the results of numerical experiments, based on data from a major U.S. airline, to demonstrate its effectiveness compared to existing approaches. The second part of the thesis focuses on improving the planning of air traffic flow management (ATFM) programs by incorporating airline preferences into the decision-making process. We develop a voting mechanism to gather airline preferences of candidate ATFM designs. A unique feature of this mechanism is that the candidates are drawn from a domain with infinite cardinality described by polyhedral sets. We conduct a detailed case study based on actual schedule data at San Francisco International Airport to assess its benefits in planning of ground delay programs. Finally, we study an integrated airline network planning model which incorporates passenger choice behavior. We model passenger demand using a multinomial logit choice model and integrate it into a fleet assignment and schedule design model. To tackle the formidable computational challenge associated with solving this model, we develop a reformulation, decomposition and approximation scheme. Using data from a major U.S. airline, we prove that the proposed approach brings significant profit improvements over existing methods.
Book Synopsis Approaches to Incorporating Robustness Into Airline Scheduling by : Yana V. Ageeva
Download or read book Approaches to Incorporating Robustness Into Airline Scheduling written by Yana V. Ageeva and published by . This book was released on 2000 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimisation Approaches for Robust Airline Crew Scheduling by : Man Bao Bassy Tam
Download or read book Optimisation Approaches for Robust Airline Crew Scheduling written by Man Bao Bassy Tam and published by . This book was released on 2011 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: To use aircrew members efficiently and economically airlines are required to solve many optimisation problems. One of these is the crew pairing problem or Tour-of-Duty planning problem. In the crew pairing problem, each flight in a pre-determined flight schedule has a fixed origin, destination, scheduled time of departure and arrival. The scheduled flights have to be combined into pairings or Tours-of-Duty (ToDs) that a single crew member can operate. The pairings have to respect contract and legal regulations, and need to be constructed in such a way that each flight is in exactly one ToD. Optimisation tools to find minimal cost sets of ToDs have been implemented in the airline industry for many years. The crew pairing problem is solved well before the flight schedule becomes operational. In this planning stage, all flights are assumed to have departure times that are both fixed and known. This assumption is often proven wrong in actual operation, and the cost minimised crew schedule often cannot be operated as planned. Pairings in a cost minimised crew schedule often include short ground times between consecutive flights. This is because pairings are usually less expensive if crews spend less time on the ground between arrival and departure of two consecutive flights, hence the total working or operating hours are maximised. Such crew schedules happen to become sub-optimal in actual operation, as they are easily disrupted and chain impacts of delays are usually found as a result. If an airline provides connection times between consecutive flights which just satisfy the minimum time legally required, a late arriving flight will cause the subsequent flights to depart late. Not only will the downstream flight which operates on the delayed aircraft depart late, but also the late arriving crew members who are changing aircraft will board late for their outgoing flights. After a few aircraft changes, many flights may be delayed by the initially minor delay. Disruptions may result in flight cancellation and/or may require the use of reserve crews to get back on schedule and originally scheduled crew might not be able to continue their duty because of rule violations. As a result, substantial unplanned costs, such as overtime, fuel costs and compensations for parking and passengers with delayed or canceled flights, can be incurred. Therefore, airlines do not only require minimum cost solutions, but are also very interested in robust solutions. The robust ToD planning problem is the problem of obtaining aircrew schedules in planning that are not necessarily optimal in terms of the planned crew cost but that yield low actual cost in operation. Approaches to robust aircrew scheduling have been developed only recently using different measures of robustness.
Book Synopsis Multi-objective Approaches to Investigate Airline Schedule Robustness by : Geert De Maere
Download or read book Multi-objective Approaches to Investigate Airline Schedule Robustness written by Geert De Maere and published by . This book was released on 2010 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Robust Flight Control by : Jean-Francois Magni
Download or read book Robust Flight Control written by Jean-Francois Magni and published by Springer. This book was released on 1997-03-07 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: In October 1994, 22 organisations throughout Europe accepted a challenge to solve a specific robust flight control design problem. The results of that design challenge, presented at the GARTEUR Specialists' Workshop in Toulouse, France in April 1997, are reported here. Two flight control benchmarks are considered, based on the automatic landing phase of a large cargo aircraft and on the control of a military aircraft. Methods applied include: classical control; multi-objective optimisation; eigenstructure assignment; modal multi-model approach; LQ, Lyapunov and H¿-techniques; ¿-synthesis; nonlinear dynamic inversion; robust inverse dynamics estimation; model predictive control and following; and fuzzy control. Involved in the definition of the benchmarks and the evaluation process have been representatives from the European aeronautical industry, bringing a strong link with flight control law design practice.
Book Synopsis Airline Operations and Management by : Gerald N. Cook
Download or read book Airline Operations and Management written by Gerald N. Cook and published by Taylor & Francis. This book was released on 2023-05-04 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airline Operations and Management: A Management Textbook presents a survey of the airline industry, with a strong managerial perspective. It integrates and applies the fundamentals of several management disciplines, particularly operations, marketing, economics and finance, to develop a comprehensive overview. It also provides readers with a solid historical background, and offers a global perspective of the industry, with examples drawn from airlines around the world. Updates for the second edition include: Fresh data and examples A range of international case studies exploring real-life applications New or increased coverage of key topics such as the COVID-19 pandemic, state aid, and new business models New chapters on fleet management and labor relations and HRM Lecture slides for instructors This textbook is for advanced undergraduate and graduate students of airline management, but it should also be useful to entry and junior-level airline managers and professionals seeking to expand their knowledge of the industry beyond their functional area.
Book Synopsis The Global Airline Industry by : Peter Belobaba
Download or read book The Global Airline Industry written by Peter Belobaba and published by John Wiley & Sons. This book was released on 2015-07-06 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensively revised and updated edition of the bestselling textbook, provides an overview of recent global airline industry evolution and future challenges Examines the perspectives of the many stakeholders in the global airline industry, including airlines, airports, air traffic services, governments, labor unions, in addition to passengers Describes how these different players have contributed to the evolution of competition in the global airline industry, and the implications for its future evolution Includes many facets of the airline industry not covered elsewhere in any single book, for example, safety and security, labor relations and environmental impacts of aviation Highlights recent developments such as changing airline business models, growth of emerging airlines, plans for modernizing air traffic management, and opportunities offered by new information technologies for ticket distribution Provides detailed data on airline performance and economics updated through 2013
Book Synopsis Airport Passenger-related Processing Rates Guidebook by : Michael James Cassidy
Download or read book Airport Passenger-related Processing Rates Guidebook written by Michael James Cassidy and published by Transportation Research Board. This book was released on 2009 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's Airport Cooperative Research Program (ACRP) Report 23: Airport Passenger-Related Processing Rates Guidebook provides guidance on how to collect accurate passenger-related processing data for evaluating facility requirements to promote efficient and cost-effective airport terminal design.
Book Synopsis Commercial Aviation Safety, Sixth Edition by : Stephen K. Cusick
Download or read book Commercial Aviation Safety, Sixth Edition written by Stephen K. Cusick and published by McGraw Hill Professional. This book was released on 2017-05-12 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: Up-To-Date Coverage of Every Aspect of Commercial Aviation Safety Completely revised edition to fully align with current U.S. and international regulations, this hands-on resource clearly explains the principles and practices of commercial aviation safety—from accident investigations to Safety Management Systems. Commercial Aviation Safety, Sixth Edition, delivers authoritative information on today's risk management on the ground and in the air. The book offers the latest procedures, flight technologies, and accident statistics. You will learn about new and evolving challenges, such as lasers, drones (unmanned aerial vehicles), cyberattacks, aircraft icing, and software bugs. Chapter outlines, review questions, and real-world incident examples are featured throughout. Coverage includes: • ICAO, FAA, EPA, TSA, and OSHA regulations • NTSB and ICAO accident investigation processes • Recording and reporting of safety data • U.S. and international aviation accident statistics • Accident causation models • The Human Factors Analysis and Classification System (HFACS) • Crew Resource Management (CRM) and Threat and Error Management (TEM) • Aviation Safety Reporting System (ASRS) and Flight Data Monitoring (FDM) • Aircraft and air traffic control technologies and safety systems • Airport safety, including runway incursions • Aviation security, including the threats of intentional harm and terrorism • International and U.S. Aviation Safety Management Systems
