Potential Improvements in Turbofan’s Performance by Electric Power Transfer

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.

• Record URL:
  https://doi.org/10.4271/2018-01-1962
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Balaghi Enalou, Hossein
  • Le-Peuvedic, Jean-Marc
  • Rashed, Mohamed
  • Bozhko, Serhiy
• Conference:
  • Aerospace Systems and Technology Conference
  • Location: London , United Kingdom
  • Date: 2018-11-6 to 2018-11-8
• Publication Date: 2018-10-30

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Aircraft; Compressors; Electric power; Electric vehicles; Fuel consumption; Thrust; Turbofan engines
• Uncontrolled Terms: Bleeding (Materials); Electric aircraft
• Subject Areas: Aviation; Energy; Vehicles and Equipment;

Filing Info

• Accession Number: 01690508
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2018-01-1962
• Files: TRIS, SAE
• Created Date: Dec 31 2018 3:27PM