Forthcoming and Online First Articles

International Journal of Sustainable Aviation

International Journal of Sustainable Aviation (IJSA)

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International Journal of Sustainable Aviation (8 papers in press)

Regular Issues

  •   Free full-text access Open AccessWhy fly electric? Stakeholder perceptions of e-plane knowledge, motivations and barriers
    ( Free Full-text Access ) CC-BY-NC-ND
    by Paul Parker, Chelsea-Anne Edwards 
    Abstract: Electric powered aircraft, or e-planes, have become a reality with improved battery performance and more lightweight aerodynamic airframes. Given this technical feasibility, attention is turned to the first target market, flight schools. What is the level of e-plane knowledge, trust and interest among key stakeholders, managers/owners, instructors, and student pilots? A survey of stakeholders was conducted with 186 respondents. All stakeholder groups identified battery limitations as the strongest barrier. In contrast, motivations to fly e-planes differed across stakeholder groups as managers and instructors rated cost reductions as their strongest motivation while students rated reduced greenhouse gas emissions (GHGe) as the strongest reason. Quieter operations and reduced accident risk were rated more highly by managers than other groups. Future research and the associated dissemination of results that validate stakeholder motivations and address barriers is critical to overcome knowledge gaps and support the adoption of e-planes.
    Keywords: electric aircraft; knowledge; benefits; barriers; stakeholder perceptions; flight schools; students; instructors; managers.
    DOI: 10.1504/IJSA.2022.10050619
  • Design of a low-cost pressure measurement device: validation and testing   Order a copy of this article
    by The Tran Hung, Dinh Le Anh, Dinh-Dung Nguyen 
    Abstract: Pressure measurement is essential in aerospace engineering. Measuring pressure allows us to understand the aerodynamic characteristics of the model. Consequently, it helps us propose an optimisation model design with high aerodynamic performance and low structure fatigues. However, the pressure measurement device is often complicated and high cost. It is a big problem for developing countries to possess the device. This study proposes a simple and effective new pressure measurement device design. The device is sufficiently low cost, but it can provide high accuracy data as a commercial device. A calibration process was presented in a simple wind tunnel. Experiments are then conducted for measuring pressure distribution on NACA 2415 airfoil, and they are compared with numerical data. The new pressure measurement device shows close results to numerical data. A significantly low-pressure region is observed near the leading edge of the model. Additionally, when the angle of attack increases, the negative pressure peak increases its magnitude, both in numerical and simulation methods. The pressure measurement errors are less than 10%, and consequently, they can be applied for further study.
    Keywords: pressure sensor; pressure measurement; CFD; NACA 2415.
    DOI: 10.1504/IJSA.2022.10047306
  • Sensor FDI and reconfiguration in B-747 aircraft flight control system   Order a copy of this article
    by Akan Güven, Chingiz Hajiyev 
    Abstract: Recent researches pay attention to sensor fault detection, isolation (FDI) and accommodation for flight safety of both civil and military aircraft. This study purposes to have estimation results of the lateral states that are close to real values even if there are faults on the lateral sensors of the Boeing-747 aircraft via optimal linear Kalman filter (OLKF) and reconfigurable Kalman filter (RKF). Single and double sensor faults are implemented on Boeing-747 aircraft model in steady state. In nominal case, the OLKF gives fine estimation results. However, if a malfunction on the measurement channels exists, the accuracy of estimations become poor. Single continuous bias sensor fault and measurement noise increment double sensor faults are implemented. The fault is detected, isolated and accommodated. Accuracy of the RKF is measured by root mean square error and it is proven that the estimation results are closer to actual values and gathered firmly.
    Keywords: sensor fault detection; lateral states estimation; electronic flight control systems; optimal linear Kalman filter; OLKF; reconfigured Kalman filter; state space models.
    DOI: 10.1504/IJSA.2022.10048618
  • A case for oxygenated nanofluid fuels as alternative aviation fuels: thermo-physical properties and effects on engine performance   Order a copy of this article
    by Selçuk Sarıkoç, Nwabueze Emekwuru 
    Abstract: The concerns over the sustainability of fossil based aviation fuels have led to the search for alternatives. Oxygenated fuels contain additives or ingredients, known as oxygenates, that increase the oxygen content of the fuel. Nanofluid fuels contain energetic (usually) metallic nano sized particles that enhance the thermo-physical properties of the fuels on which they are based. Oxygenated fuels and nanofuels are potential alternatives to the standard aviation fuels currently in use, especially in internal combustion engines. This short review presents the highlights from studies using oxygenated and nanofuels as alternatives to aviation fuels. Current studies indicate that oxygenated fuels can present higher calorific values, accelerate the combustion process and reduce soot emissions. Aviation nanofuel droplets present increased burning rates and the macroscopic properties of aviation nanofuel sprays such as the sheet breakup distance and velocities are changed compared to the base aviation fuels. The parameters that affect the thermophysical and engine performance properties of these alternative fuels are presented and the authors suggest studies on oxygenated aviation nanofuels as potential further directions.
    Keywords: alternative aviation fuels; fuel additives; oxygenated fuels; nanofluid fuels; internal combustion engines.
    DOI: 10.1504/IJSA.2022.10048693
  • Challenges with the electrification of aircraft for a sustainable and greener aviation   Order a copy of this article
    by Halime Hızarcı, Uğur Arifoğlu 
    Abstract: Electric aircraft is a promising technological development in the aviation industry, and it will help reduce greenhouse gas emissions and fuel costs while increasing the efficiency of aircraft. There are also some challenges with electric aircraft, as in every new technology. These are storage technology, electric propulsion system comprising electric machine and power electronics converters, protection devices, wiring, thermal management of components, certification, and system/component integration. Electrification is once started with more electric aircraft, and ongoing research and development projects will light the way for the fully electric aircraft era in the future. This paper highlights the challenges of aircraft electrification and presents the current situation on electrification.
    Keywords: electrification; sustainable aviation; electric aircraft; aviation; technological challenges.
    DOI: 10.1504/IJSA.2022.10049162
  • The effect of digitalisation on sustainability and smart airport   Order a copy of this article
    by Serap Gürsel, Rafet Demir, Hakan Rodoplu 
    Abstract: Players in the aviation industry have had to engage in a digital transformation with the spread of the concept of digitalisation because of rapid technological development. The concept of sustainability, already present in aviation, and digitalisation have become even more important in the industry. As digitisation and sustainability are two processes that need to be done together and are interdependent, and the results of which will have an impact on all stakeholders, whether positive or negative, they need to be completed successfully. Smart airports are airports where networked technologies such as IoT devices are widely used to support operations and operational planning and management. In this way, airports can become paperless and reduce environmental waste and pollutants. In this study, the concepts of sustainability and digitalisation are first discussed separately and then together, as well as the difficulties that digitalisation will bring and the contribution of digitalisation to aviation sustainability.
    Keywords: digitalisation; sustainability; aviation sustainability; smart airport.
    DOI: 10.1504/IJSA.2022.10050096
  • ADS-B data usage for aircraft noise and air quality modelling and measurement during specific stages of LTO cycle   Order a copy of this article
    by Kateryna Kazhan, Kateryna Synylo, Oleksander Zaporozhets, Sergii Karpenko 
    Abstract: The paper is targeted at the analysis of the importance of Automatic Dependent Surveillance-Broadcast (ADS-B) data in the terms of overcoming gaps between aircraft noise and local air quality modelling results and their short or long-term measurements. Presented results based on noise and air pollution measurement campaign at Ukrainian airports describe general peculiarities of the pre-processing and usage of ADS-B data during specific stages of aircraft landing and taking-off (LTO) cycle in the airport. The outcomes could be used for more accurate noise and air pollution exposure assessment and the development of recommendations for noise and local air quality monitoring systems in airports under consideration.
    Keywords: aircraft noise; air quality; airport; modelling; measurement.
    DOI: 10.1504/IJSA.2022.10050648
  • High altitude wind energy generation for stratospheric telecommunication balloons in real field   Order a copy of this article
    by Öznur Kayhan 
    Abstract: Solving energy problem of high altitude unmanned air vehicles is crucial to keep them at target altitude for years. One of the potential power source is the wind power which is powerful and permanent in stratosphere. This study outlines the simplified wind energy model integrated into station keeping stratospheric balloon to predict the wind power generation in real field. The sample simulation of the system was run in one of the Turkey’s city coordinates and real atmospheric conditions with the inclusion of wind profile. To keep the balloon at the flight station coordinates, propulsion has been applied and energy demand of the propulsion unit has been compared with the wind energy conversion unit output data. Simulation results show that wind energy can compensate energy demand of propulsion unit between 92%-100% in ascending phase depending on wind turbine swept area. It can be reported that wind energy unit would be helpful to solve energy problem of stratospheric balloons.
    Keywords: stratospheric balloon; high altitude; wind power; energy generation; real environment.
    DOI: 10.1504/IJSA.2022.10050827