Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Conceptual design of hybrid electric vertical take-off and landing (eVTOL) aircraft with a liquid hydrogen fuel tank

  • Kim, Jinwook (Cryogenic Engineering Laboratory, Korea Advanced Institute of Science and Technology) ;
  • Kwon, Dohoon (Cryogenic Engineering Laboratory, Korea Advanced Institute of Science and Technology) ;
  • Jeong, Sangkwon (Cryogenic Engineering Laboratory, Korea Advanced Institute of Science and Technology)
  • Received : 2022.05.03
  • Accepted : 2022.06.29
  • Published : 2022.06.30
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Abstract

Urban air mobility (UAM) has recently attracted lots of attention as a solution to urban centralization and global warming. Electric vertical take-off and landing (eVTOL) is a concept that emerges as one of the promising and clean technologies for UAM. There are two difficult challenges for eVTOL aircraft to solve. One is how to improve the weight efficiency of aircraft, and the other is how to complete long-range missions for UAM's flight scenarios. To approach these challenges, we propose a consolidated concept design of battery-fuel cell hybrid tiltrotor aircraft with a liquid hydrogen (LH2) fuel tank. The efficiency of a battery-fuel cell hybrid powertrain system on the designed eVTOL aircraft is compared to that of a battery-only powertrain system. This paper shows how much payload can increase and the flight scenario can be improved by hybridizing the battery and fuel cell and presenting a detailed concept of a cryogenic storage tank for LH2.

Keywords

Acknowledgement

This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (202003010040020, Development of 100 kg/h, 90 MPa cryogenic reciprocating pump for liquid hydrogen refueling stations)

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