Potential Improvements in Turbofan's Performance by Electric Power Transfer

Enalou, Hossein Balaghi; Le-Peuvedic, Jean Marc; Rashed, Mohamed; Bozhko, Serhiy

Abstract

© 2018 SAE International. All Rights Reserved. Bleeding in engines is essential to mitigate the unmatched air massflow between low and High Pressure (HP) compressors at low speed settings, thus avoiding unstable operation due to surge and phenomena. However, by emerging the More Electric Aircraft (MEA) the engine is equipped with electrical machines on both high and Low Pressure (LP) spools which enables transfer of power electrically from one spool to another and hence provides the opportunity to operate engine core components closer to their optimum design point at off-design conditions. At lower power setting of the engine, HPC speed can be increased by taking power from LP shaft and feeding it to HP shaft which can lead to the removal of the bleeding system which in turn reduces weight and fuel consumption and help to overcome engine instability issues. Fuel consumption can be decreased by decreasing inconsistent thrust with the aircraft mission for flight and ground idle settings. This paper investigates the idea of power circulation between shafts using a turbofan model developed using Intermediate Control Volume (ICV) method. Results show considerable improvement in efficiency while dynamic response for severe transient maneuvers is also improved considerably with the new control configuration.

Citation

Enalou, H. B., Le-Peuvedic, J. M., Rashed, M., & Bozhko, S. (2018, May). Potential Improvements in Turbofan's Performance by Electric Power Transfer. Presented at Aerospace Systems and Technology Conference, Doubletree Club Hotel, Orange County Airport 7 Hutton Centre Drive Santa Ana, CA 92707

• Presentation Conference Type: Conference Paper (published)
• Conference Name: Aerospace Systems and Technology Conference
• Start Date: May 12, 2018
• End Date: May 12, 2018
• Acceptance Date: Sep 28, 2018
• Online Publication Date: Oct 30, 2018
• Publication Date: Oct 30, 2018
• Deposit Date: May 5, 2020
• Publicly Available Date: May 5, 2020
• Publisher: SAE International
• Volume: 2018
• Series ISSN: 2688-3627
• DOI: https://doi.org/10.4271/2018-01-1962
• Public URL: https://nottingham-repository.worktribe.com/output/4382373
• Publisher URL: https://saemobilus.sae.org/content/2018-01-1962