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A preliminary study into turbofan performance with LP-HP power exchange

Enalou, Hossein Balaghi; Bozhko, Serhiy; Rashed, Mohamed; Kulsangcharoen, Ponggorn


Hossein Balaghi Enalou Nottingham, UK

Professor of Aircraft Electric Power Systems

Mohamed Rashed Nottingham, UK

Ponggorn Kulsangcharoen


Once an engine is designed, its Low Pressure (LP) and High Pressure (HP) shaft speeds are inevitably thermodynamically coupled which imposes certain operational constraints. These spools are not mechanically connected, however, in future more electric aircraft with electrical machines linked to both HP and LP shafts it is possible to transfer power between them electrically seeking for optimized operation depending on Engine Operating Mode (EOM). This paper investigates possible achievements of the novel configuration of power circulation between shafts using turbofan model, developed by Inter-Component Volume (ICV) method. Results show that a considerable improvement can be achieved not only in fuel consumption but also in surge margin compressors along with providing ability to have compatible thrust with flight mission.

Start Date May 7, 2018
Publication Date May 7, 2018
Journal Proceedings of Montreal 2018 Global Power and Propulsion Forum
APA6 Citation Enalou, H. B., Bozhko, S., Rashed, M., & Kulsangcharoen, P. (2018). A preliminary study into turbofan performance with LP-HP power exchange
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