Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Handling Qualities Evaluation of Flight Control System for Lift-Cruise type eVTOL Aircraft

Lift-Cruise형 eVTOL 항공기 제어시스템 조종성 평가 연구

  • Sungtak Oh (Department of Aeronautical Systems Engineering, Hanseo University) ;
  • Jeonghun Shin (Department of Aeronautical Systems Engineering, Hanseo University) ;
  • Jinwoo Lee (Department of Aeronautical Systems Engineering, Hanseo University) ;
  • Dongjin Lee (Department of Unmanned Aircraft Systems, Hanseo University)
  • 오성탁 (한서대학교 항공시스템공학과) ;
  • 신정훈 (한서대학교 항공시스템공학과) ;
  • 이진우 (한서대학교 항공시스템공학과) ;
  • 이동진 (한서대학교 무인항공기학과)
  • Received : 2024.09.30
  • Accepted : 2024.10.29
  • Published : 2024.10.31
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Abstract

To ensure stable urban flight of electric vertical take-off and landing(eVTOL) aircraft, securing handling qualities and stability is essential. However, clear handling qualities standards for eVTOL aircraft, which have different characteristics from conventional manned aircraft, have not yet been established. Therefore, this paper identifies handling qualities evaluation criteria suitable for eVTOL aircraft based on the handling qualities standards for manned aircraft and designs a control system that meets the predicted handling qualities criteria through evaluation. simplified vehicle operation(SVO) control laws and stability and control augmentation system(SCAS)-based control laws were applied to the lift-cruise configuration eVTOL aircraft. Using control designer's unified interface(CONDUIT), it was confirmed that the level 1 standard was met, and to validate the system, assigned handling qualities evaluation was performed using handling qualities task elements(HQTE) in an X-Plane based simulation environment, resulting in the design of a control system that ensures handling qualities.

eVTOL (electric vertical take-off and landing) 항공기의 안정적인 도심 비행을 위해서는 조종성과 안정성 확보가 필수적이다. 하지만 기존 유인항공기와 다른 특성을 가진 eVTOL 항공기에 대한 명확한 조종성 규격이 마련되지 않았다. 따라서, 본 논문에서는 기존 유인 항공기의 조종성 규격을 바탕으로 eVTOL 항공기에 적합한 조종성 평가항목을 식별하고, 평가를 통해 예측 조종성 기준을 만족하는 제어시스템을 설계하였다. Lift-Cruise 형상의 eVTOL 항공기에 SVO (simplified vehicle operation) 조종 법칙과 SCAS (stability and control augmentation System) 기반 제어 법칙을 적용하였다. CONDUIT (control designer's unified interface)을 활용하여 level 1 기준을 충족하는 것을 확인하였고, 검증을 하기 위해 HQTE (handling qualities task elements)를 바탕으로 X-Plane 기반의 시뮬레이션 환경에서 할당 조종성 평가를 수행하여 조종성이 확보된 제어시스템을 설계하였다.

Keywords

Acknowledgement

본 논문은 국토교통부 국토교통과학기술진흥원의 '도심항공교통 가상 통합운용 및 검증 기술개발(RS-2022-00143965)' 과제의 지원으로 작성되었습니다.

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