Browsing by Issue Date, starting with "2019-10-11"
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- Air Budjet: a VTOL virtual operator company in PortugalPublication . Duarte, Manuel Mendes; Baltazar, Maria Emilia; Silva, J.Creation of sustainable transportation service for a new and virtual airline company that uses VTOL aircraft in order to increase mobility and flexibility in Portugal. This study started with the VTOL concepts, peripherally and accessibility, and business models and plans reviews. The air service characterization was then carried out using localization and trajectory optimization algorithms, thus allowing to elaborate two applications (software): one for clients to book their flights and another that compiles flight's data booked by clients and optimizes flights routes/trajectories. With this study, it is possible to depict the viability of the economic-financial results of the new virtual company and the application development results with the optimized trajectories. The development of this air service will increase accessibility and mobility in all regions of Portugal and companies that cannot afford the costs of executive aviation, too. In order to facilitate the booking of the flights, an application was created for the client in order to optimize the company costs related to this air service, and thus to make the cost of a trip more appealing; a second application was elaborated that optimizes the trajectories of the aircraft.
- Optimized communication plan and its impact on the contingency plan previously put in place for timely crisis response in the air sectorPublication . Piedade, Lúcia; Silva, J.Analyze the crises spread in the Organization, taking into account their effects, response time (partial and total) and entities involved. In theory, the goal is to understand how the crisis response should be and how the system responds to the same type of crisis. There is a gap in the communication plan for crisis response in place. The deepening and exploration of typologies of organizational crises in the air sector, will to optimize the response times that can satisfy or mitigate the worsening of the situations, setting off a new challenge. It is through the methodology of gathering information, readings and research of the subject literature that this will be analyzed based in success cases, typologies of crisis and also models of response time exist. The study will shine a light on the different crisis typologies as well as their propagation at the Lisbon airport. Leading to the creation of a model or models for a quick and effective response to it. Thus minimizing the response time and eventual recourse due to the analysis of success stories in similar infrastructures. The objective of this study is to study is the production of a model or several. Therefor optimizing the response time in crisis situations as a result of studies and research on typologies of crisis and their effects in time and in the entities involved.
- Spanish airports performance and efficiency benchmarkPublication . Martinez Ferrer, Pablo; Baltazar, Maria Emilia; Silva, J.This study uses a MCDA tool to analyse and improve Spanish airports performance and efficiency. Thus, a holistic study using MACBETH (with PESA-AGB) is used. This study has never been applied before in Spanish airports. Firstly, a literature review related to this study keywords is conducted, as well as about benchmarking concept applied specifically to airports. Secondly, several methodologies in used to benchmark airports are reviewed and compared. Thirdly, airport performance and efficiency issues are addressed and described. Finally, the MCDA-MACBETH (with PESA-AGB) tool is applied to 4 Spanish airports. Spanish airports belonging to AENA transported 263,753,406 passengers in 2018 with an increase compared to 2017 of 5.8%. General data enables to conclude that Spanish air transportation system is growing annually and hence there is the need to improve airports performance and efficiency, also to maintain the high levels of quality to address the growing demand. Spanish air transportation system is growing annually and is it upmost important to maintain high levels of quality to address such demand. Through this study, performance and efficiency improvements are seek within several airport key areas such as Safety and Security, Quality Service, Productivity and Effectiveness, Financial and Environment. As far as known, this study has never been applied before in Spanish airports.
- Pilots performance and flight safety: the case of cognitive fatigue in unpressurized aircraft cabinsPublication . Rocha, João Artur de Freitas; Silva, JorgeThe purpose of this study is to understand the impact, evolution and perception of cognitive fatigue as a contributory factor on the occurrence of incidents and accidents, on unpressurized aircraft. This study use the science principles present in the Fatigue Management Guide for Airline Operators (FMG) [1] to evaluate data obtained by four methods of measuring cognitive fatigue [2] These consist in two objective measures, Psychomotor Vigilance Test (PVT) and an actiwatch (Readiband 5), and two subjective measures Samn-Perelli 7-point fatigue Scale (SPS) and sleep diaries. It is also obtained results from a survey related to this theme. From this research are draw conclusions of the influence and evolution of cognitive fatigue on the operations of unpressurized aircrafts and it is understood the difference between perceived cognitive fatigue and the real cognitive fatigue accumulated by the pilot. Is also drawn findings from a launched survey related to this theme. In this case study the focus will fall upon general aviation where there are no way to control and monitor the fatigue element, the cause of most incidents and accidents that occur in Portugal as concluded by analyzing several GPIAAF final reports using HFACS [3]. Normally this type of research is conducted within airline operators, that are already a very restricted and controlled domain of civil aviation, instead of within general aviation.