Mechanical Components Design for a Hybrid Assisted Regenerative Turbofan Engine (HARTFE) Configuration for Future Aircraft propulsion

EasyChair Preprint no. 10338

Abstract

The concept of electrical assisted and electrical driven hybrid engines is gaining pace with advancements in electrical motors and Li-ion batteries. This research focuses on developing the design of an electro-mechanical system using components such as mechanical diaphragm for compressor shielding, electro-mechanical clutch, power transmission drives for hybrid-assisted regenerative turbofan engine or HARTFE configuration. The system could be a possible candidate for future Trent aeroengines to be mounted on the XWB-84 (extra wide body) configuration possibly in year 2035. Conceptually, the design of engine electrification technology for a triple spool turbofan is aimed at sustaining greener airline operations. In this research, the Trent (XWB-84) has been taken as baseline engine. The electro-mechanical configuration involves the design of a sensor-actuated mechanical diaphragm mechanism downstream of the fan for adequately shielding the engine core and thus bypassing requisite ram air during various phases of flight. The electro-mechanical clutch mechanism is designed for installation at a position downstream of low-pressure turbine and is further attached to a gear-transmission mechanism. The purpose of this complex mechanism is to disengage the high-power and low-power spools during taxi. The engineering changes are estimated to result in 100% electric thrust generation at taxi, approximately 3.0% at take-off alongwith 375 kg in fuel savings while completely replacing the 280 kg auxiliary power unit (APU), all at merely 2.43% in take-off weight penalty. This research further reveals that for integration to aircraft the engines shall have an aft-mounted configuration.

Keyphrases: compressor shielding diaphragm, electrical taxi, electro-mechanical clutches, Electro-mechanical Systems, hybrid-assist take-off, Hybrid-assisted regenerative turbofan engine (HARTFE) configuration, power transmission drives

@Booklet{EasyChair:10338,
  author = {Ussama Hamid and Hamza Tariq and Ali Sarosh and Farhan Tariq and Rizwan Yousaf},
  title = {Mechanical Components Design for a Hybrid Assisted Regenerative Turbofan Engine (HARTFE) Configuration for Future Aircraft propulsion},
  howpublished = {EasyChair Preprint no. 10338},

  year = {EasyChair, 2023}}