Browsing by Author "Saias, Chana Anna"

Browsing by Author "Saias, Chana Anna"

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  • Assessment of hydrogen fuel for rotorcraft applications 
    Saias, Chana Anna; Roumeliotis, Ioannis; Goulos, Ioannis; Pachidis, Vassilios; Bacic, Marko (Elsevier, 2022-09-19)
    This paper presents the application of a multidisciplinary approach for the preliminary design and evaluation of the potential improvements in performance and environmental impact through the utilization of compressed ...
  • Assessment of hydrogen gas turbine-fuel cell powerplant for rotorcraft 
    Baena Mejıas, Rafael; Saias, Chana Anna; Roumeliotis, Ioannis; Pachidis, Vassilios; Bacic, Marko (Elsevier, 2023-12-11)
    Conventional turboshaft engines are high power density movers suffering from low efficiency at part power operation and producing significant emissions. This paper presents a design exploration and feasibility assessment ...
  • Design exploration and performance assessment of advanced recuperated hybrid-electric UAM rotorcraft 
    Saias, Chana Anna; Roumeliotis, Ioannis; Goulos, Ioannis; Pachidis, Vassilios; Bacic, Marko (American Society of Mechanical Engineers, 2021-11-09)
    The design of efficient, environmentally friendly and quiet powerplant for rotorcraft architectures constitutes a key enabler for Urban Air Mobility application. This work focuses on the development and application of a ...
  • Design methodology and mission assessment of parallel hybrid electric propulsion systems 
    Ghelani, Raj; Roumeliotis, Ioannis; Saias, Chana Anna; Mourouzidis, Christos; Pachidis, Vassilios; Norman, Justin; Bacic, Marko (American Society of Mechanical Engineers, 2022-09-16)
    An integrated engine cycle design methodology and mission assessment for parallel hybrid electric propulsion architectures are presented in this paper. The aircraft case study considered is inspired by Fokker 100, boosted ...
  • Integrated hybrid engine cycle design and power management optimization 
    Ghelani, Raj; Roumeliotis, Ioannis; Saias, Chana Anna; Mourouzidis, Christos; Pachidis, Vassilios; Bacic, Marko; Norman, Justin (American Society of Mechanical Engineers, 2023-09-28)
    A novel integrated gas turbine cycle design and power management optimization methodology for parallel hybrid electric propulsion architectures is presented in this paper. The gas turbine multi-point cycle design method ...
  • On the design of integrated thermal management systems for eVTOL aircraft 
    Kang, Sangkeun; Saias, Chana Anna; Roumeliotis, Ioannis; Broca, Olivier (American Society of Mechanical Engineers (ASME), 2023-09-28)
    Vertical take-off and landing aircraft equipped with hybrid or fully electric propulsion systems have gained interest for urban air mobility applications. Besides the low energy density of state of art electric systems, ...
  • On the effects of optimal implementation of variable rotor speed and power management on hybrid-electric rotorcraft 
    Saias, Chana Anna; Goulos, Ioannis; Pachidis, Vassilios; Bacic, Marko (American Society of Mechanical Engineers, 2023-02-08)
    The concept of Variable Rotor Speed (VRS) has been recognized as an efficient means to improve rotorcraft operational performance and environmental impact, with electrification being a potential technology to further ...
  • Performance, environmental, and mobility analysis of large capacity fast rotorcraft configurations for the European regional air traffic market 
    Declerck, Laurent; Cruellas Bordes, Marc; Saias, Chana Anna; Nalianda, Devaiah; Schreiner, B. Deneys J.; Misté, Gianluigi A.; Dal Monte, Andrea; Benini, Ernesto; Junior, Alf (DGLR Deutsche Gesellschaft für Luft- und Raumfahrt - German Society for Aeronautics and Astronautics, 2023-09-07)
    Fast, large rotorcraft are of interest in the future European air transport system due to their runway independent operation and potential mobility improvements for the passenger. Both a tiltrotor and a coaxial compound concept ...
  • Preliminary Design of Hybrid-Electric Propulsion Systems for Emerging Urban Air Mobility Rotorcraft Architecture 
    Saias, Chana Anna; Goulos, Ioannis; Roumeliotis, Ioannis; Pachidis, Vassilios; Bacic, Marko (American Society of Mechanical Engineers, 2021-08-09)
    The increasing demands for air-taxi operations together with the ambitious targets for reduced environmental impact have driven significant interest in alternative rotorcraft architectures and propulsion systems. The design ...
  • Three-spool turbofan pass-off test data analysis using an optimization-based diagnostic technique 
    Saias, Chana Anna; Pellegrini, Alvise; Brown, Stephen; Pachidis, Vassilios (Sage, 2021-04-15)
    Production engine pass-off testing is a compulsory technique adopted to ensure that each engine meets the required performance criteria before entering into service. Gas turbine performance analysis greatly supports this ...