Efficiency Of Air Transportation Research Articles

Competitiveness and Logistics Performance Index: How does the infrastructure pillar perform in ASEAN countries?

This paper examines the impact of strategic sub-components of the Global Competitiveness Index (GCI) on the Logistics Performance Index (LPI), positing a correlation between the LPI and selected GCI factors, specifically within the infrastructure domain—namely, the indicators of Road Quality, Rail Service Efficiency, Port Efficiency, Air Transport Efficiency, and Electrification. The objective is to identify which indicators within the infrastructure sector most significantly affect the Logistics Performance Index. In this study, the LPI is the dependent variable, while the five previously mentioned competitiveness indicators act as independent variables. Top of Form A panel data regression analysis was employed to evaluate how these independent variables influence the dependent variable. The data for this study were derived from the World Bank, specifically the LPI of the World Bank and the World Economic Forum, covering countries in the ASEAN region from 2012 to 2020. The findings indicate that, among the five indicators, Port Efficiency significantly impacts the Logistics Performance Index in the ASEAN region. Furthermore, both Air Transportation Efficiency and Electrification significantly influence the Logistics Performance Index. Conversely, Road Quality and Rail Service Efficiency do not significantly affect the Logistics Performance Index in the ASEAN region.

A multi-objective memetic algorithm with adaptive local search for airspace complexity mitigation

Airspace complexity is a paramount safety metric to measure the difficulty and effort required to safely manage air traffic. The continuing growth in air traffic demand results in increasing airspace complexity and unprecedented safety concerns. Most existing methods treat the minimization of airspace complexity as the sole objective, ignoring the path deviation cost induced by the re-scheduled aircraft. In this paper, regarding reduction of airspace complexity and path deviation cost as two conflicting objectives, a multi-objective airspace complexity mitigation model is proposed to simultaneously ensure the safety and efficiency of air transport by optimizing flight trajectories. To effectively solve this multi-objective and non-linear optimization problem, a novel Memetic Algorithm with Adaptive Local Search (called MA-ALS) is developed. Specifically, we design a new crossover and three new local search operators under the flight trajectory representation. MA-ALS conducts exploration by crossover, and exploitation by a hill-climbing local search process. Moreover, we proposed an adaptive local search selection mechanism which facilitates the dynamic collaboration of different local search operators during evolution. A comprehensive comparison with the most recently developed algorithms on Chinese air traffic dataset is conducted. The Pareto front generated by the proposed algorithm dominates that of the compared baselines. Moreover, compared with a real flight schedule, the flight plan obtained by the proposed algorithm can significantly reduce the airspace complexity.

Study on the practical method implementation of the navigation equations in a simulated FMS

This paper presents the main objective of Air Traffic Management Systems – ATMS that is to achieve optimized performance in terms of aviation safety and the enhancement of the current air transport system, through the in-depth study of the complex integration of all advanced technologies regarding air traffic monitoring, aeronautical communications on-board computers, display and control systems within the extended framework of Air Traffic Services - ATS. The Flight Management System - FMS is indispensable for flight planning, air navigation, flight performance management, aircraft guidance on the flight path and continuous monitoring of the progress during flight. The FMS is the device used by the flight crew to select various modes of flight control via the flight control computer - FCM and to display flight plans and other flight data via the Multi-Functional Control Display Unit - MCDU. The flight path is monitored by the MCDU and the Electronic Instrument System – EIS. The in-depth study of Air Transport Efficiency when applying air traffic service operational analysis and trajectory determination methods to identify key areas of Air Traffic Management inefficiencies and to prioritize and implement appropriate optimization methods are presented and analyzed in detail in this paper.

Research on Separation and Emission Reduction of Regional Airliner Based on Wake Encounter Response Model

To ensure the safety of aircraft operation, the current regional passenger aircraft maintains a large distance from the preceding aircraft in actual operation, which result in reducing the operation efficiency of airports and airspace, and increasing pollutant emissions. To address these issues, in this paper, two aircraft types are selected in which the CRJ-900 encounters the trailing wake vortices of the A380 in front. An improved strip model is developed to build the CRJ-900 overall response wake encounter value. First, the safety of the CRJ-900 longitudinal and lateral wake encounters in different flight stages is analyzed. Second, we calculate the critical safety separation and its impact on air transport efficiency. Third, we use the LTO model to measure the reduction of aircraft fuel consumption and pollutant emissions. The results demonstrated that the medium-sized aircraft CRJ-900 has the potential to reduce the wake separation when following the super-heavy A380 aircraft. In terms of the critical safety separation calculated by the safety index, the operating efficiency of airports and airspace could be effectively improved, allowing the reduction of pollutant emissions during aircraft take-off and landing. During the takeoff, level flight, and landing phase, the results are summarized as follows: when the CRJ-900 is 13km away from the A380, the maximum lift variation is 11334N, 8157N, and 7366N; the maximum rolling moment variation is 43836N•M, 35274 N•M, and 28487 N•M; the maximum value of the rolling moment coefficient (RMC) is 0.0171, 0.0160, and 0.0130; when the RMC critical value is 0.031, the maximum safe separation for different flight stages is 11960m, which is 1040m shorter than the existing separation; when the RMC critical value is 0.05, the maximum safe separation distance of each stage is 10083m, a reduction of 2917m compared with the existing separation; when the RMC threshold is 0.07, the maximum safe separation of different flight stages is 9021m, a reduction of 3979m compared to the existing separation; when the RMC value is between 0.031-0.07, the fuel consumption can be reduced by 7.9%–12.8%, and the pollutant emission can be reduced by 9.1%–12.8%.

On the Analysis of Factors Causing Labor Productivity Decline as an Element in Evaluating the Operating Efficiency of Air Transport Organizations

Aim. The presented study aims to determine the impact of factors causing labor productivity decline on the operating efficiency of air transport organizations.Tasks. The authors examine the types of factors influencing the level of labor productivity among different employee categories in air transport enterprises; identify external and internal factors and measures aimed at reducing their negative impact when analyzing the operating efficiency of air transport enterprises.Methods. This study uses general scientific methods of cognition in various aspects to examine economic factors causing labor efficiency decline among production and management staff.Results. The impact of regulatory documents of various levels on labor efficiency decline in air transport organizations is investigated. The behavior of management personnel in conflict situations is analyzed as one of the factors reducing labor productivity at the enterprise. The most typical causes of conflict escalation in an organization are described and methods for preventing them or mitigating their destructive consequences are proposed.Conclusions. Analyzing labor efficiency as part of a comprehensive economic analysis of enterprise activities is crucial for the further development of the aviation business. Labor efficiency analysis involves identifying the causes of labor productivity decline and possible directions for finding ways to prevent their negative impact. In addition to economic factors, which are manifested in the adoption of legal standards, it is necessary to take measures aimed at mitigating the impact of socio-psychological factors.

Model for measuring airport innovation

Identifying and measuring innovation at airports becomes necessary not only to point out theelements of its management or infrastructure to be improved, but also to raise opportunities for innovation, with the aim to collaborate for the best efficiency of air transport. In this sense, this study concerns innovation management applied to airports given the limitations in the state of the art related to measuring innovation in this type of organization. The integrated perception of different airport stakeholders has been collected from a survey with 70 Brazilian professionals specialized in the subject, namely researchers, airports, airlines, and the aeronautics industry managers, in a proposal to measure the level of airport innovation from different indicators. The results proposed an algorithm for an Airport Integrated Innovation Index (AI3), composed by 38 measurable variables related to innovation practices, procedures, and infrastructure elements such as new biometric passenger identification systems, real-time passenger flight tracking systems, new types of runway pavement, and actions to reduce airport operational restrictions. This model can be used in airports of different categories (national or international) and sizes (small, medium, or large). It may be adapted for different countries and contexts according to their markets and organizational cultures.

Determination of the flight trajectory in terms of emission and fuel consumption minimization

The present-day world is characterized by the intense development of air transport. However, along with it, significant problems appear. Among these problems, the most important are those relating to safety and negative impact of air transport on the environment. Air transport efficiency and profitability issues, although not critical, must also be taken into account because they decide about the intensity of development of this branch of transport. There are currently two large programs in Europe oriented at improving safety, environmental, and efficiency indicators. These are SESAR 2020 and Clean Sky 2, being a continuation of previous ones. One of the ways to reduce negative impact of air transport on the environment and improve its efficiency is to reduce fuel consumption and pollutants emissions resulting from fuel combustion. To find solutions with the abovementioned features, it is necessary to have sufficiently accurate models to estimate the amount of fuel consumed and the amount of pollutants emitted. Developing a sufficiently accurate model to determine fuel consumption and pollutants emission was performed. Due to the specificity of the missions carried out by passenger aircraft, the focus was on the cruise stage when aircraft flies at a constant altitude with a constant air speed. The result of the analysis was the development of methodology for fuel consumption and emission of main pollutants in cruise conditions. Specific fuel consumption is calculated for the thrust required for horizontal flight at cruising altitude. Emission indexes for CO, NOx, HC, and CO2 for the cruise have been determined based on known indexes for the landing and take-off cycle phase, after applying appropriate corrections. An illustration of the application of the developed methodology was the optimization of a medium-sized transport aircraft trajectory on a selected connection to determine a trajectory characterized by a minimum emission value taking into account weather conditions.

A Simulation Platform for Airport Runway Collision Warning System

The increasing passenger throughput makes the large-scale aviation hub being unable to bear the burden gradually. Flight delays caused by cannot fly through the ATC tower in time are becoming more and more common, which makes airlines have to face the problem of passenger loss. Meanwhile, runway intrusion incidents caused by the high load operation of the airport also occur frequently. Once there is a collision, airlines will suffer huge economic losses. In order to avoid runway intrusion, improve air transport efficiency and reduce airline losses, runway collision avoidance system emerges as the times require. Based on the real airport map geographic coordinate data, this paper draws the airport dynamic map in the on-board moving map for the pilot, defines several kinds of runway intrusion scenarios, and introduces 3D real-time visual display into the platform in order to build a complete set of simulation verification platform for airport runway collision avoidance system. The research results of this paper can be used to verify the optimization algorithm of runway collision avoidance system and the test of airport dynamic map in the future, which is of great significance to improve the traffic condition of large airports in the future.

CYBERSECURITY IN THE CIVIL AVIATION AND EXISTING CHALLENGES

Purpose of the article: by this article the author wants to reveal the provisions and features regulations, structures and standards of International Organizations works in Cybersecurity in The Civil Aviation. The methodological basis of the research comprises general scientific and special methods. Results: the legislation of ICAO and ITAO is vitally crucial to ensure cybersecurity for the civil aviation. All stakeholders, in particular, public and private sectors as wells as the representatives of academia should be involved in the process of protecting critical infrastructure of the Civil Aviation. Discussion: cyber security in civil aviation is mainly based on the cyber technologies used to increase the safety and efficiency of air transport. At the same time, the interconnection of systems and reliance on technology is a prerequisite for the emergence of new cyber threats and risks. An interconnected computer system is widely used in the aviation industry.

Abstract WP278: Air versus Ground Transportation During Inter-Hospital Transfer of Patients for Endovascular Thrombectomy Evaluation

Introduction: Mode of transport utilized during inter-hospital transfers can influence delays in patients with suspected large vessel occlusion (LVO). We hypothesized that air transport is advantageous over ground in this patient population. Method: Suspected LVO patients transferred to our hub from 13 spoke hospitals within our tele-stroke network at UT-Houston, from September 2015 to April 2018 were retrospectively analyzed. Patients were dichotomized into air vs. ground transport. Travel time was calculated as time from transfer center activation to arrival at hub. For each spoke, average air miles/hour and ground miles/hour indices were calculated for comparison. Air transport was considered advantageous if the difference in indices was positive. Results were stratified by time of the day [diurnal (6a-6p) vs. nocturnal (6p-6a)]. Results: In a total of 339 patients, 290 (86%) used air transport, while 49 (14%) used ground. Baseline age, gender, race, use of IV-tPA, mRS in the 2 groups were similar, except air group had higher NIHSS [median 15 vs. 12, p = 0.048]. Overall, mean ground indices were smaller compared to air indices (21.35 ± 10.76 vs. 25.77 ± 14.33, p = 0.006). The advantage of air transport was maintained when stratified by time of the day but more notable during nocturnal hours [air 25.12 ± 14.93 vs. ground 19.85 ± 10.14, p = 0.021)] compared to diurnal hours [(air 28.82 ± 13.68 vs. ground 25.00 ± 10.80, p = 0.17)]. Difference between air and ground indices (y axis) was positively correlated with ground distance (x axis) (Pearson rho = 0.80, 95% CI 0.42 to 0.93, p<0.001) indicating efficiency of air transport becomes more profound as distance increases (Figure 1). Ground transport was faster for distances <20 miles. Conclusion: Irrespective of time of the day, air transport is faster mode of transporting patients during inter hospital transfers and should be utilized particularly for spokes situated farther away (over 20 miles) from hub and during nocturnal hours.

Reducing the Negative Environmental Impact of Winter Airport Maintenance through Its Model Design and Simulation.

Airports are one of the segments within air transport and their serviceability ensures air transport efficiency. However, airports are among the largest contributors to the negative environmental impact of this kind of transport. Individual activities at airports leave a negative environmental footprint. By optimizing processes, it is possible to reduce the negative environmental impacts of these subjects. Airport winter maintenance is one of the important activities accompanying airports in geographical areas where winter season is expected due to the climate zone and weather conditions. Effective winter maintenance ensures optimal airport operation and has a significant impact on safety. However, the winter maintenance of the airport causes an excessive burden on the environment around the airports, in particular by applying de-icing agents to aircraft and movement areas, or by emissions and noise caused by equipment for snow and ice removal. The aim of the present article is to optimize the winter maintenance of the airport, namely the deployment of winter maintenance equipment with respect to meteorological conditions while maintaining the priorities for winter maintenance between individual airport areas. The aim of optimization is to achieve the saving of maintenance time and reduce the negative environmental impact of winter maintenance by effectively deploying equipment and devices.

A Hierarchical Heuristic Approach for Solving Air Traffic Scheduling and Routing Problem With a Novel Air Traffic Model

Efficient flight routing and scheduling play an important role in air traffic flow management, which aims to maximize the utilization of airport and enroute capacities to ensure safety and efficiency of air transportation. In this paper, we first propose a novel discrete-time flow dynamic model for an air traffic network, consisting of airports, waypoints, and air links, upon which we formulate an air flow routing and scheduling problem as an integer linear programming problem. Considering the NP-hard nature of the problem, we present a novel hierarchical flow routing and scheduling approach, where the hierarchical architecture is derived naturally from the network containment relationship, and computation is carried out in a bottom-up manner, which relies on an incremental strategy. On the resulting flow routes and schedules, a heuristic algorithm is carried out to determine flight plans for individual aircrafts. The effectiveness of the proposed hierarchical approach is illustrated by air traffic data in four flight information regions in the association of Southeast Asian nations.

BAGGAGE AT AIR TRANSPORTATION AS A SUBJECT OF CRIME: COMPLEX CHARACTERISTICS

As the title implies the article describes legal regime for baggage .In the process of emergence as a European state, Ukraine needs effective aviation interstate and national communications. Efficiency of air transportation is an integral part of the formation of a stable economy and the development of international relations. Efficient international air transportation of passengers is able to provide labor migration and investment development. Purpose : to carry out a comprehensive description of baggage during air transportation as a subject of crime, taking into account air-law, civil law, criminal law, forensic and logistic aspects. The legal regime of baggage during air transportation and its characteristics as a subject of crime were studied. Research methods: used methods of analysis, comparison and synthesis. The results: obtained the conclusion that the baggage for air transportation as a crime has a special legal regime. A special legal regime for baggage requires research in the aspect of many branches of knowledge. The main aspects that contribute to the occurrence of violations in this area is that the baggage is out of the passenger’s observation, and airport employees, on the contrary, have full access to it and even the possibility for manual inspection. Forensic aspects of the study require an integrated approach. For the practical investigation of these crimes, it is necessary to create special investigative groups involving various state institutions. Discussion: the necessity of developing complex civil, air-legal and forensic recommendations for the qualification and investigation of crimes, the subject of which is baggage during air transportation, is substantiated. Depending on the specific situation, liens can be classified as: theft if the cost of the stolen has reached the limits of criminal responsibility, willful destruction or damage to property if it caused damage in large quantities, careless destruction or damage to someone else’s property, when such destruction or damage to baggage has caused grave bodily harm or death of people, official negligence if the passenger has suffered material damage and has a sign and officer.

Test and Simulation of 9960Hz Subcarrier Modulation for DVOR Station of Civil Aviation

In order to solve the problem of 9960Hz subcarrier modulation of DVOR system exceeding the limit, this paper use the test system and three-dimensional modelling and simulation technology to ensure flight calibration passes smoothly. Taking an airport for example, the field test and modeling simulation are carried out in the same situation when the surrounding site and parameters are the same with the flight calibration, ensuring that the results are in good agreement with the flight calibration results. We can get that the substation is the key factor which affects the 9960Hz subcarrier modulation exceeding the limit. After removing the substation, 9960Hz subcarrier modulation meet the requirements, the airport pass the flight calibration one-time finally. This method solves the problem of the 9960Hz subcarrier modulation in a DVOR station and provides the reference basis for the problems encountered in the construction and operation of the navigation station, which ensuring the safety and efficiency of air transportation.

Evaluation of hub-spoke airport networks in Sumatra island, Indonesia to increase efficiency of air transportation

Kualanamu International Airport is the busiest airport in Sumatra. In 2015, it served 8 million passengers and 41.6 thousand tons of goods for international and domestic flights. Hub-spoke networks are optimized when generally having a transport efficiency of at least 49-52% as well as providing air service in a wide geographic area and to many destinations. The aim of this study is to analyse the hub-spoke airport networks based on the Herfindahl-Hirschmann Index (HHI) to increase air transport efficiency in Sumatra Island. This study uses data from cargo production and couple’s flights from 10 airports in Sumatra Island for domestic flight route pairs and 6 airports for international flight route pairs. The results of the study show that route networks in Sumatra Island in existing conditions have not developed with the hub-spokes concept. The HHI analysis, indicates 2 hubs for domestic flights and 1 hub (Kualanamu) for international flights. Kualanamu International Airport and Hang Nadim International Airport were indicated as hub airports in Sumatra Island for domestic flights. The efficiency of air cargo transportation through the system (2 hubs and 8 spokes) results in a transport efficiency at 68.37%, which is still far above the efficient range at 49-52%.

Distributed Flight Routing and Scheduling for Air Traffic Flow Management

Air traffic flow management (ATFM) is an important component in an air traffic control system and has significant effects on the safety and efficiency of air transportation. In this paper, we propose a distributed ATFM strategy to minimize the airport departure and arrival schedule deviations. The scheduling problem is formulated based on an en-route air traffic system model consisting of air routes, waypoints, and airports. A cell transmission flow dynamic model is adopted to describe the system dynamics under safety related constraints, such as the capacities of air routes and airports, and the aircraft speed limits. Our ATFM problem is formulated as an integer quadratic programming problem. To overcome the computational complexity associated with this problem, we first solve a relaxed quadratic programming problem by a distributed approach based on Lagrangian relaxation. Then a heuristic forward-backward propagation algorithm is proposed to obtain the final integer solution. Experimental results demonstrate the effectiveness of the proposed scheduling strategy.

Sector-based Distributed Scheduling Strategy in Air Traffic Flow Management

Abstract: Air traffic flow scheduling is an important component in air traffic control system and has significant effects on the safety and efficiency of air transportation. In this paper, we propose a sector-based distributed air traffic flow scheduling strategy to minimize the airport arrival delay. The scheduling problem is formulated based on a simplified air traffic system model consisting of sectors, air-routes, waypoints and airports. A cell transmission flow dynamic model is adopted to describe the system dynamics and some safety-based constraints such as the sequence of en-routed aircraft and the limitations of cruising speeds are considered in the system model. To overcome the computational complexity involved in the centralized structure, we propose a sector-based distributed approach based on Lagrangian relaxation. Experimental results demonstrate the effectiveness of the proposed scheduling strategies.

Enabling the environmentally clean air transportation of the future: a vision of computational fluid dynamics in 2030.

As global air travel expands rapidly to meet demand generated by economic growth, it is essential to continue to improve the efficiency of air transportation to reduce its carbon emissions and address concerns about climate change. Future transports must be 'cleaner' and designed to include technologies that will continue to lower engine emissions and reduce community noise. The use of computational fluid dynamics (CFD) will be critical to enable the design of these new concepts. In general, the ability to simulate aerodynamic and reactive flows using CFD has progressed rapidly during the past several decades and has fundamentally changed the aerospace design process. Advanced simulation capabilities not only enable reductions in ground-based and flight-testing requirements, but also provide added physical insight, and enable superior designs at reduced cost and risk. In spite of considerable success, reliable use of CFD has remained confined to a small region of the operating envelope due, in part, to the inability of current methods to reliably predict turbulent, separated flows. Fortunately, the advent of much more powerful computing platforms provides an opportunity to overcome a number of these challenges. This paper summarizes the findings and recommendations from a recent NASA-funded study that provides a vision for CFD in the year 2030, including an assessment of critical technology gaps and needed development, and identifies the key CFD technology advancements that will enable the design and development of much cleaner aircraft in the future.

차세대 항공전문인력 양성을 위한 인력양성체계의 평가

The NGAP and TRAINAIR PLUS programme goal is to improve the safety and efficiency of air transport through the establishment, maintenance and monitoring of high standards of training and competency of aviation personnel on a world-wide basis and in a cost-effective manner. According to the trend, the approval of training organization must be change. In this study, personnel training system and certification mechanism were studied.

Prospects of Air Traffic Management in South Eastern Europe

In the forthcoming period the European air traffic management will handle double flight operations than today – from 1.7 to 2.1 higher traffic level in 2025 than in 2005 [1]. The problem of the European airspace fragmentation should be solved by the comprehensive dynamic harmonization programs, which can contribute to effective increase of airspace capacity and increase of air transport efficiency. The main objective of the development strategy refers to the implementation of reformation processes of the European air traffic management system through functional ATM1 regionalization. Encouraged by the Single European Sky project, and through airspace de-fragmentation, numerous projects have been initiated by Eurocontrol in cooperation with the European Commission. One of them is establishing of the Functional Airspace Block in South Eastern Europe. The implementation of regulatory, institutional and legal framework of the Single European Sky FAB2 would ensure the expansion of the European air traffic market to South Eastern Europe, counting over 500 million potential users [2]. Croatia and all the other countries in the region have to adopt the provisions of ECAA3 Agreement and EU air transport acquis in their national legislation. This paper specifies the main determinants of the strategic development as well as the key factors which influence the European air traffic dynamics. The paper elaborates the indicators and significant elements of the required ATM reforms in South Eastern Europe on the samples of six ANSPs according to ECAA Agreement and EU acquis. KEYWORDS: Single European Sky, European Common Aviation Area, Air Traffic Management, South Eastern Europe, Functional Airspace Block