Forthcoming and Online First Articles

International Journal of Sustainable Aviation

International Journal of Sustainable Aviation (IJSA)

Forthcoming articles have been peer-reviewed and accepted for publication but are pending final changes, are not yet published and may not appear here in their final order of publication until they are assigned to issues. Therefore, the content conforms to our standards but the presentation (e.g. typesetting and proof-reading) is not necessarily up to the Inderscience standard. Additionally, titles, authors, abstracts and keywords may change before publication. Articles will not be published until the final proofs are validated by their authors.

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International Journal of Sustainable Aviation (3 papers in press)

Regular Issues

  • Comparative analysis of speed control strategies for five-phase PMSM in propulsion systems of two-seater all-electric aircraft   Order a copy of this article
    by Cong-Thanh Pham, Quoc-Khai Tran, Chan Thanh Huu Nguyen 
    Abstract: To enhance system stability and speed control for a five-phase permanent magnet synchronous motor (5PMSM) in the propulsion of a two-seater all-electric aircraft, this study compares advanced speed control strategies. The strategies evaluated include feedforward-proportional-integral (FPI) and adaptive backstepping sliding mode (ABS) control, systematically analysed against the classical PI controller. These strategies aim to replace the five traditional PI controllers used in field-oriented control (FOC), enhancing control performance quality. The FPI strategy augments the PI controller by incorporating the difference between current and previous control signal components, enabling effective dqxy-axis regulation. The ABS strategy further enhances control robustness by integrating nonlinear backstepping and sliding mode techniques, ensuring better adaptability to system uncertainties and disturbances. This comparative analysis demonstrates the potential of advanced control methods to improve 5PMSM performance in electric aircraft applications, simulation results conducted in MATLAB software to evaluate effectiveness of the proposed control strategies.
    Keywords: five-phase permanent magnet synchronous motor; all-electric aircraft; adaptive control; field-oriented control; backstepping control; sliding mode control.
    DOI: 10.1504/IJSA.2025.10071791
     
  • Enhancing altitude control in quadrotors: a study on PID parameter selection and Euler angle influence   Order a copy of this article
    by Dinh-Dung Nguyen, Manh-Hung Duong, Quang-Chinh Hoang 
    Abstract: This study presents a comprehensive examination of the mathematical model, stabilisation, and control channels of quadrotors, focusing on minimising the influence of Euler angle control channels on altitude control. Using simulations conducted in MATLAB, the research evaluates various parameter selection methods for proportional-integral-derivative (PID) controllers across different control channels. The results demonstrate smooth tracking of the altitude setpoint with a steady-state deviation of only 0.1 metres and no significant overshoot, confirming the effectiveness of the PID tuning, particularly the integral component. Additionally, the study shows that changes in Euler angles, such as pitch and roll deviations, can induce altitude drops of up to 2 metres (20%), with recovery occurring gradually due to the integral action. While the model excludes specific aerodynamic effects and assumes ideal measurement conditions, it highlights the necessity for further research into real-world measurement inaccuracies and environmental influences such as wind and rain. This study is foundational for future investigations into more complex quadrotor models and aims to advance the understanding of PID controller parameter selection, particularly regarding its impact on altitude control.
    Keywords: quadrotor; PID controller; control algorithms; filter; compensation.
    DOI: 10.1504/IJSA.2025.10071912
     
  • Investigating the effect of nozzle length variation on centreline decay using AI predictions   Order a copy of this article
    by J. Anbarasi, Naren Shankar Radha Krishnan, Rohan Bastola, Rajamurugu Natarajan 
    Abstract: This study investigates how nozzle length affects centreline pressure decay and potential core length of subsonic jets, using AI to enhance prediction accuracy. Understanding nozzle geometrys effect on jet behaviour is critical for propulsion, noise control, and industrial jet design. Experiments and simulations covered nozzle lengths from 0 mm (orifice) to 100 mm and diameter ratios of 2, 3, and 4 under subsonic, sonic, and under-expanded conditions. A rational quadratic gaussian process regression (RQGPR) model predicted centreline total pressure based on velocity ratios between primary and minor jets. Results show core length increases significantly up to 30 mm nozzle length, then plateaus. For diameter ratio 3 at subsonic flow conditions, a 16% and 31% increase in the core length was observed for nozzle lengths of 10 mm and 30 mm. Decay is delayed by expansion waves of under-expanded jets and the core is elongated, leading to a supersonic flow transition.
    Keywords: jets; turbulent models; potential core length; nozzle pressure ratio; shadowgraph; shock.
    DOI: 10.1504/IJSA.2025.10072173
     

 

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