Browsing by Author "Eryilmaz, Ibrahim"

Browsing by Author "Eryilmaz, Ibrahim"

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  • A design approach for controlled blade-off in overspeeding turbines 
    Eryilmaz, Ibrahim; Pachidis, Vassilios (Elsevier, 2022-04-18)
    Following a shaft failure or loss of load in a gas turbine engine, the turbine overspeeds due to the continuing expansion through the stage(s). The overspeed may result in hazardous conditions which have to be prevented. ...
  • Design space exploration of turbine blade shroud interlock for flutter stability 
    Larrieta, Olatz; Alonso, Roberto; Pérez Escobar, Óscar; Eryilmaz, Ibrahim; Pachidis, Vassilios (American Society of Mechanical Engineers, 2021-01-11)
    The geared turbofan engines bring the potential to rotate the fan at lower speed and allow an increase in diameter, which in turn leads to an increase in propulsive efficiency through high by-pass ratio. The low-pressure ...
  • Multi-blade shedding in turbines with different casing and blade tip architectures 
    Eryilmaz, Ibrahim; Guenchi, Biläl; Pachidis, Vassilios (Elsevier, 2019-02-25)
    A shaft failure in a gas turbine engine results in the decoupling of the turbine and the compressor. The turbine continues extracting work from the air flow causing the acceleration of the free-running turbine which can ...
  • Multidisciplinary methodology for turbine overspeed analysis 
    Eryilmaz, Ibrahim; Pawsey, Lucas; Pachidis, Vassilios (Cambridge University Press, 2018-11-15)
    In this paper, an integrated approach to turbine overspeed analysis is presented, taking into account the secondary air system dynamics and mechanical friction in a turbine assembly following an unlocated high-pressure ...
  • Performance and operability of an electrically driven propulsor 
    Eryilmaz, Ibrahim; Li, Huayang; Pachidis, Vassilios; Laskaridis, Panagiotis; Zhu, Zi-Qiang; Jewell, Geraint Wyn (Sage, 2021-12-29)
    This manuscript discusses the operation of an electrically driven fan for a hybrid-electric propulsion system for BAe-146 aircraft. The thrust requirement is fed into an integrated cycle and aerodynamic design tool for the ...
  • Turbine thermomechanical modelling during excessive axial movement and overspeed 
    Eryilmaz, Ibrahim; Pachidis, Vassilios (Cambridge University Press, 2019-03-14)
    This manuscript discusses the numerical (finite element) and analytical modelling of structural interactions between gas turbine components in case of excessive axial movement and overspeed. Excessive axial movement, which ...