Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Preliminary Conceptual Design of a Multicopter Type eVTOL using Reverse Engineering Techniques for Urban Air Mobility

도심항공 모빌리티(UAM)를 위한 역설계 기법을 사용한 멀티콥터형 eVTOL의 기본 개념설계

  • Choi, Won-Seok (Department of Aerospace Engineering, Sejong University) ;
  • Yi, Dong-Kyu (Department of Aerospace Engineering, Sejong University) ;
  • Hwang, Ho-Yon (Department of Aerospace Engineering, and Department of Convergence Engineering for Intelligent Drone, Sejong University)
  • 최원석 (세종대학교 항공우주공학과) ;
  • 이동규 (세종대학교 항공우주공학과) ;
  • 황호연 (세종대학교 항공우주공학과, 지능형드론 융합전공학과)
  • Received : 2021.01.19
  • Accepted : 2021.02.24
  • Published : 2021.02.28
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Abstract

As a means of solving traffic congestion in the downtown of large city, the interest in urban air mobility (UAM) using electric vertical take-off landing personal aerial vehicle (eVTOL PAV) is increasing. eVTOL configurations that will be used for UAM are classified by lift-and-cruise, tilt rotors, tilt-wings, tilted-ducted fans, multicopters, depending on propulsion types. This study tries to perform preliminary conceptual design for a given mission profile using reverse engineering techniques by taking the multicopter type Airbus's CityAirbus as a basic model. Wetted area, lift to drag ratio, drag coefficients were calculated using the OpenVSP which is an aerodynamic analysis software. The power required for each mission section of CityAirbus were calculated, and the corresponding battery and motor were selected. Also, total weight was predicted by estimating component weights of eVTOL.

대도시 도심의 교통 정체를 해결하기 위한 방법의 하나로 전기수직이착륙 개인항공기(eVTOL PAV)를 활용한 도심항공 모빌리티(UAM)의 관심이 증가하고 있다. 도심항공 모빌리티에 사용할 비행체인 eVTOL은 추진방식에 따라 복합형, 틸트 로터형, 틸트 날개형, 틸트 덕티드 팬형, 멀티콥터형으로 분류된다. 본 연구에서는 멀티콥터형인 에어버스사의 시티에어버스를 기본 모델로 주어진 임무 형상에 맞게 역설계 기법을 사용하여 기본 개념설계를 수행하였다. 공력해석 프로그램인 OpenVSP를 사용하여 표면적과 양항비, 항력계수를 계산하였다. 각 임무 구간별 소요되는 동력을 계산하였고, 그에 맞는 배터리와 모터를 비교하여 선정하였다. 또한 eVTOL 구성품별 중량을 추정하여 전체 총 중량을 예측하였다.

Keywords

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