Journal of Aviation

Journal of Aviation Kapağı
Yayıncı
Vedat Veli ÇAY
e-ISSN
2587-1676
Başlangıç Yılı
2017
Dil
İngilizce
Durumu
Aktif
Dizin
Havacılık Dizini, TRDizin
Yayın Aralığı
Yılda 3 Sayı

Son Sayı (Latest Issue) - Year 2022 Volume 6 Issue 2

Abstract (Özet)

This study examines the development of the low-cost carriers (LCCs) in Australia’s export and import air freight markets. The study period is from 2004 to 2020. The study used a qualitative instrumental case study research approach. The data gathered for the study was examined by document analysis. The study found that the development of the low-cost carriers (LCCs) share of Australia’s annual export and import air freight markets occurred in three distinct phases. In the initial phase, 2004-2005, the market was served by just one low-cost carrier (LCC) Pacific Blue Airlines, who did not transport any export or import air freight in 2004. In 2005, the airline made a strategic policy decision to transport air freight. Phase 2 saw the inception of international services by Jetstar Airways in 2006. Jetstar Airways immediately gained import and export air freight traffic. The third phase took place from 2007 to 2020, when the major Asia-based low-cost carriers entered the market, starting with AirAsia-X in 2007. The low-cost carriers (LCCs) annual air freight market growth rates oscillated substantially over the study period, particularly for export air freight traffic. Despite the strong growth, the low-cost carriers (LCCs) annual market export and import air freight shares are considerably lower than those of the dedicated all-cargo carriers and full-service networks carriers (FSNCs).

Abstract (Özet)

Aviation accidents are caused by a chain of errors in many steps. Detection and classification of human factors in accidents are critical for taking effective precautions. This study aims to investigate the factors affecting civil aviation accidents in Turkey and increase aviation safety by raising awareness against the contributing factors in the accidents. Final accident reports of Turkish Civil Aviation Accidents, including fatalities or injuries between 2003 and 2017, were analysed retrospectively using the Human Factors Analysis and Classification System (HFACS). 59 aviation accidents were included in this study. Crew Resource Management (CRM) (41.4%), Loss of Situational Awareness (LSA) (39.0%), and meteorology (29.2%) were found to be the most contributing factors in 41 Plane, Helicopter, Glider (PHG) accidents, while meteorology (77.7%) and CRM (61.1%) were found to be the most contributing factors in 18 Balloon accidents. The rate of HFACS levels in the PHG/Balloon accidents were found to be 90.2%/66.6% in Level-1 (Unsafe Acts), 95.1%/100% in Level-2 (Preconditions for Unsafe Acts), 78.0%/94.4% in Level-3 (Unsafe Supervision), and 58.5/83.3% in Level-4 (Organizational Influences). These findings show that human factors are still major contributing factors in aviation accidents. Academic training like CRM, Aviation Meteorology and LSA should be given more frequently to the aviators to prevent accidents. Including Spatial Disorientation, hypoxia, and night vision practical training into the civilian pilot training and integrating HFACS into the "Aviation Safety Management System" might help to reduce aviation accident rates.

Abstract (Özet)

Environmental problems, which continue to exist as a global threat in the world, have recently been frequently discussed both in the media and in academic. It is obvious that enterprises in different sectors in the business world cannot ignore environmental problems. One of the most important of these sectors is the aviation sector. In the sector, there are harmful effects on air, water, soil pollution, natural life and wildlife, especially noise pollution. With the establishment of airports and the start of aviation activities in the sector, it is suggested that construction works, increase in waste, development of industrialization around the airport, rapid consumption of energy resources, growth of residential areas, increase in population should be brought under control with 'Environmental Management System' practices. A green business strategy is being researched in order to successfully manage the environmental management practices applied at airports around the world and to spread environmental awareness throughout the enterprise. Green business strategy refers to the tendency of all business units to integrate environmental issues into business strategy. In this work you can stop the environmental degradation and even the environment etc. As a result of these factors, environmental pollution also increases. Today, the green business strategy is being researched as a phenomenon that can contribute to the successful management of environmental management systems in order to control the environmental pollution effect resulting from the activities at the airports. From this point of view, whether the green business strategy will be an alternative to the success of the airport environmental management system is discussed with the conceptual-theoretical application method.

Abstract (Özet)

The aviation industry is one of the fastest and most affected industries by the developments in the world. In the study, the historical events that shape the development of civil aviation in the world and in Turkey and the events that cause the sectoral characteristics of the industry to change and develop were examined. It has been concluded that the contribution of the aviation industry to the global economy is 4.3 times higher than other business lines worldwide. For this reason, the resistances and activities of various airports from around the world to the crises were researched and suggestions were presented. The motivation of this study has been to investigate the factors affecting the aviation industry, which has such a global importance, and the managerial decisions that have allowed the industry to survive until now.

Abstract (Özet)

It is known that the airline industry, which is known to be more dynamic and complex among all sectors in the world, has been affected by many changes and events. Especially the political tensions between the states and the fact that the airline industry creates a large amount of capital make this situation even more complex and unpredictable. In this study, the reflections of the political tension between Ukraine and Russia in Turkey, which has intense commercial relations with both countries, were examined in the context of the airline industry. As a result of the analyzes carried out, it was seen that the tension between Ukraine and Russia is in a positive correlation with the traffic in Turkish airspace and Istanbul Airport, and it was concluded that Istanbul airport effectively increased the aircraft traffic with the airspace occupation. The study is expected to be the basis for future comprehensive studies.

Abstract (Özet)

In the aviation sector, where intense rules and competition prevail, safe flight operations are possible with the employment of qualified human resources who can adapt to technology. The aim of this research is to investigate how the most suitable candidate can be recruited by evaluating many criteria together in the pilot recruitment processes, which are of critical importance for aviation enterprises. In this context, the opinions of senior pilots working in the world's top 10 airline organizations were consulted in the study carried out with the Analytical Hierarchy Process (AHP), which is one of the multi-criteria decision support methods. As a result of the literature research, the recruitment criteria for pilot candidates, which are actively used in the sector, have been listed in the context of the suggestions of experienced captains who also take part in various management positions in the aviation sector. A total of 17 criteria, 3 of which are upper and 14 are sub-criteria determined were weighted with the AHP method. As a result of the analysis, "technical", "non-technical" and "occupational criteria" were listed as the upper criteria according to the degree of importance in terms of local weights.

Abstract (Özet)

In this study, we set out to estimate the prevalence of presenteeism and to define its possible association with organizational factors, committing errors and stress among ab-initio pilots. Presenteeism is a major safety-related issue and has been extensively studied in a variety of occupation groups. As a cross-sectional study, a self-administered questionnaire was used to collect the data from ab-initio pilots. The participants assessed themselves on the Stanford Presenteeism Scale (SPS-6). Correlation analysis was performed to explore the association between organizational factors and presenteeism. Based on the findings, the prevalence of presenteeism was 29.1 percent among the ab-initio pilots (N=175). Furthermore, there was a strong association between training-related stress (p< 0.01) and presenteeism. The student pilots with presenteeism were found to make mistakes during flight. Better and effective supervision for ab-initio pilots was associated with lower levels of presenteeism, highlighting the need for a supportive and comfortable atmosphere in the flight deck in which ab-initio pilots may feel comfortable. The findings presented here may facilitate improvements in the field of aviation safety.

Abstract (Özet)

Aeronautical applications of morphing technologies are continued to increase their popularity and wide spread application during last years. The technology takes place in not only military, but also civil applications that aims providing superior performances to manned or unmanned aircraft than conventional configurations. However, multidisciplinary approach is required for an aerial vehicle to have ultimate outcome from such an application due to existence of interdisciplinary interactions. Therefore, this research aims to investigate effects of morphing wingtip application on longitudinal and lateral-directional stabilities of a fixed-wing unmanned aerial vehicle, which have remarkable effect on autonomous control performance considerations. In this article, morphing wingtip refers to folding the wing from a determined spanwise location with a dihedral angle. With the aim of the study, wingtips of an unmanned aerial vehicle were folded with 15, 30 and 45 degrees of dihedral angles to be compared with original non-dihedral design. Longitudinal and lateral-directional characteristics of new variations were evaluated in terms of stability derivatives by means of linearized equations of motion that were also presented in state-space representation. Aerodynamic impacts of each variation were assessed by means of computational results obtained from analyses with three-dimensional panel method. Furthermore, taking inertial changes into consideration, concluding remarks on both longitudinal and lateral-directional stability derivatives were presented for each configuration.

Abstract (Özet)

This study aims to obtain new data that will mediate the development of safety culture by investigating the power distance, which is one of the cultural dimensions of communication, and causes accidents in aviation, through the assertiveness levels of the pilots and their social approval needs. The method of this research is quantitative, data were collected through online questionnaires. The population and the sample of the research are consisted of the civilian pilots in Turkey. The questionnaires were applied to 75 pilots. In male pilots participating in the study; The levels of "Instrumental Use of Power" and "Legitimation of Power", which are sub-dimensions of organizational power distance, are significantly higher than female pilots. In addition, it has been revealed that female pilots pay less attention to the judgments of others than male pilots. These results suggest that male pilots need more organizational power than female pilots. One of the results of the research is the strong positive relationship between the assertiveness level of the participants and "Consent to Power", which is one of the sub-dimensions of power distance; it is thought that this relationship stems from the social adaptation capacity of assertive individuals. The study also showed that the main factor determining the behavior of the employees is the organizational culture. Within this scope, sharing the accident reports of Turkish registered aircraft prepared by Transport Safety Investigation Center with researchers and institutions will contribute significantly to the need for resources.

Abstract (Özet)

The aim of this study is to reveal the effect of location selection in the airline industry on airline operational costs and fleet management. The effect of location selection on airline operational costs and fleet management in the airline industry is seen as a multi-criteria decision-making problem. For this purpose, the TOPSIS model, a multi-criteria decision-making method, was used. The data used in the research are handled in two stages as alternatives and criteria. The alternatives of the research are 5 different types of aircraft, 8 different locations and 10 different hubs. The alternatives to the multi-criteria decision-making process are operational costs. The main starting point of the study is where the airline's location should be and which aircraft should be used in order to reach 10 different main transfer centers with the lowest operational cost. The weighting has been made according to the average costs in the industry. In addition, in order to fully measure the effect of the location on operational costs, an index was developed with the average of the GDP, HDI and SDI values of the countries where the transfer centers are located, and it is ensured that it affects the decision-making process as 30%. According to the results of the research, it has been seen that the operational costs of the airlines to be established in locations such as Istanbul, London and Delhi are lower and the fleet management is more optimal. This study is important in terms of helping airline companies in the selection process of their establishment location. In addition, unlike the studies in the literature, three different indices such as GDP, HDI and SDI were included in the study, resulting in more realistic results.

Abstract (Özet)

In this study, the wing profile, which is difficult to calculate and determine, has been optimized with the help of Foilsim data and optimization algorithms. Foilsim data provided by NASA (National Aeronautics and Space Administration) and used by many researchers, especially in developing model airplanes, has been provided to use in aircraft wing shape optimization. Although Foilsim is a very useful simulation program for designers, it cannot be used effectively in optimization processes due to its web environment. Lift coefficient is needed for Lift equation in airfoil shape optimization. Lift coefficient depends on angle, camber, and thickness of airfoil Calculation of Lift coefficient is difficult and needs heavy mathematical equations or real experiments. By using Foilsim data and optimization algorithm (Artificial Neural Networks: ANN, Artificial Bee Colony: ABC), wing angle, camber and thickness values, which are difficult to determine and calculate, were estimated and comparative experiments of the values were made. (Fixed Lift, Fixed Speed, Fixed Wing Area). Experimental results have shown that it is a useful study for airfoil shape optimization. In short, in this study, by using the Foilsim data and the optimization algorithm to provide the lifting force determined by the designer, the most suitable angle, camber, thickness values of the wing, which are difficult to determine and calculate, are determined to enable the production of efficient aircraft. The user enters the desired lift value into the ABC optimization algorithm and finds the required wing properties for the desired lift value.

Abstract (Özet)

Global competitiveness has become just as crucial in the rapidly growing world economy. For this reason, the problem of delivering the products to the consumer at the right place and time has become indispensable to survive in the global market and has brought the logistics factor to the fore. One of these logistics activities, the transportation sector, ensures that human needs are met at the desired place and on time. It has become essential to deliver products to target markets faster and safer than their competitors, and airplanes have been used in cargo and passenger transportation. The rapid technological change has also led to aircraft development used in cargo transportation. Thus, air cargo transportation, which is less risky and faster than other transportation modes, has come to the fore in time-bound and valuable goods. The main purpose of this study, which is carried out with the qualitative research method, is to determine and evaluate the effects of air cargo transportation on global competitiveness. In the study, firstly, the concept of air cargo transportation tried to be explained. Then, the literature review created the background of the study. In this context, the development process of air cargo transportation was discussed in terms of its historical, corporate, and economic development. Then, the types of aircraft used, airports, and cargo companies operating on a global scale, which are the elements of air cargo transportation, were examined. In addition to the high capacity and fuel efficiency produced by the current technology of the aircraft, the issue of further reduction of costs due to capacity increase by optimizing the loading problem has been mentioned. Finally, by analyzing the findings, the effects of air cargo transportation on global competitiveness were discussed and evaluated, and suggestions were made to increase this power. This article, which is a direct study on the effects of air cargo transportation on global competitiveness, is crucial as it will contribute to the literature.

Abstract (Özet)

Air cargo demand estimation is crucial for every part of the air industry for determining policies, making decisions on investments, pricing, marketing, etc. This study analyses factors affecting the air cargo demand of the European Region (23 countries) where no studies were found by making use of the two-step generalized method of moments (GMM). The effects of Total Airport Investments, Consumer Price Index, GDP Per Capita, Population, Foreign Trade Volume, Industrial Production Index, and Exchange Rate on Air Cargo Demand were examined with the data set covering the years between 2009 and 2018. The findings indicated that previous air cargo demand has explanatory power on current demand, and there was an inverse relationship between the change in the consumer price index and the amount of cargo. In addition, the panel regression estimator indicates a positive relationship between Foreign Trade and Industrial Production Index. The results show that price stability is of great importance not only from a macroeconomic perspective but micro economically also.

Abstract (Özet)

Businesses provide various marketing strategies in order to gain a competitive advantage and achieve sustainable profitability in today's globally competitive environment. While some of these strategies are realized through traditional marketing methods, some of them are implemented through digital marketing applications. The continuous and rapid change in information and communication technologies has made it obligatory for businesses to reconsider their marketing strategies and activities. In the literature, there are various studies conducted with multi-criteria decision-making methods in order to measure the marketing performance of businesses. However, there is no study conducted with these criteria specific to airline companies’ marketing performance. The criteria determined as a result of the literature review were analyzed using the fuzzy-AHP and Fuzzy-BWM methods for weight determination, and the TOPSIS method for alternative selection which are among the multi-criteria decision-making techniques. As a result of the study, net profitability, load rate, and total passenger number criteria came to the fore among other criteria, evaluations were made for the 6 airline companies examined, and the best and the worst alternative airline companies were determined, and evaluations were made in terms of marketing strategies. As a result, an exemplary application was introduced to airline companies in order to improve their marketing strategies and performances, and inferences that could contribute to future studies were made in the literature.

Abstract (Özet)

Airline cargo transportation is the preferred transportation system as the fastest transportation way today. However high costs also lead to high prices. Therefore, pricing is one of the issues that businesses should pay the most attention to when planning. Although competition over price is a competitive factor that businesses do not want to enter, this situation has become inevitable due to the intensity of the competition. To cope with this situation, it is beneficial for businesses to constantly measure and evaluate the price perception of customers.In addition, it is of great importance for every customer for airline cargo companies that want to stay afloat in a dynamic market. Providing unconditional customer satisfaction and turning these customers into loyal customers is the key to sustainable success for companies engaged in airline cargo transportation.Based on what has been described so far, it is possible to express the main purpose of this study in the form of investigating the effect of price perception on customer loyalty. The businesses using airline cargo transportation were included in the research and in this direction, research was carried out with 33 businesses operating in the Marmara Region and using airports in Istanbul.In the study, it was concluded that airline cargo service price perception does not have a statistically significant effect on airline cargo service customer loyalty. Finally, suggestions have been made to those interested in the subject.