The paper deals with the development and validation of an aero-thermodynamic model for a twin-spool mixed flow turbofan engine based on the state variable and control volume approach. Using actual performance data, the engine simulation has been performed for steady state and transient conditions with the help of MATLAB-SIMULINK. The simulation model is developed in a systematic manner. Engine states for different steady state operating conditions have been plotted. The model is fully equipped with capabilities to be integrated with the engine control design software to yield results for closed loop simulation. The results are validated against an independent and widely available modeling software called Gas turbine Simulation Program (GSP).

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