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http://dx.doi.org/10.20910/JASE.2022.16.3.42

A Study on the Certification Standard Analysis and Safety Assurance Method for Electric Propulsion System of the Urban eVTOL Aircraft  

Kim, Juyoung (Koreanair R&D Center)
Yoo, Minyoung (Koreanair R&D Center)
Gwon, Hyukrok (Koreanair R&D Center)
Gil, Ginam (Koreanair R&D Center)
Gong, Byeongho (Koreanair R&D Center)
Na, Jongwhoa (Korea Aerospace University)
Publication Information
Journal of Aerospace System Engineering / v.16, no.3, 2022 , pp. 42-51 More about this Journal
Abstract
An eVTOL aircraft, which is required to operate with low pollution/low noise in urban environments, mostly use battery-powered electric propulsion systems as power sources, not traditional propulsion systems such as reciprocating or turbine engines. Accordingly, certification preparation for the electric propulsion system and securing the safety of the electric propulsion system, are important issues. In the U.S., special technical standards equivalent to FAR Part 33 were issued to certify electric engines, and in Europe, various special conditions were established to certify electric propulsion systems. Thus, in Korea, the technical standards for the electric propulsion system for eVTOL aircraft must also be prepared in line with the U.S. and Europe. In this paper, SC E-19, the technical standard of the electric/hybrid propulsion system (EHPS) in special conditions, was analyzed. Additionally, securing the safety of the electric propulsion system of the aircraft are proposed, through the collaboration of SC E-19 technical standards with the existing aircraft safety evaluation procedure ARP 4761. Finally, through a case study of the Ehang 184 electric propulsion system, it has been confirmed that the proposed safety assurance method is applicable at the aircraft level.
Keywords
UAM; eVTOL; Type Certification; Electric/Hybrid Propulsion System; Special Condition;
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