Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Flight Dynamics Mathematical Modeling of Quad Tilt Rotor UAM for Real-Time Simulation

쿼드 틸트 로터 UAM 실시간 비행 시뮬레이션을 위한 비행역학 수학적 모델링

  • Received : 2024.04.05
  • Accepted : 2024.07.11
  • Published : 2024.08.31
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Abstract

This paper describes the results of a study on Generic Quad Tilt Rotor UAM aircraft, focusing on nonlinear mathematical modeling and the development of real-time simulation software. In this research, we designed a configuration for a Generic Quad Tilt Rotor eVTOL UAM aircraft based on NASA's UAM mission requirements. We modeled the aerodynamics using a database, the prop-rotor dynamics with a thrust database, and included a ground reaction and atmospheric model in the flight model. We defined the control concept for various modes(helicopter mode, transition mode, and airplane mode), derived tilt angle corridors, and formulated flight control requirements. The resultant real-time flight simulation software not only performs trim analysis for Tilt Rotor UAM aircraft but also predicts handling qualities, optimizes tilt angle scheduling based on dynamic characteristics, designs and validates flight control laws for helicopter, transition, and airplane modes, and facilitates flight training through simulator integration.

본 논문은 Generic 쿼드 틸트 로터 UAM 항공기 비행 동력학 기반 비선형 수학적 모델링 및 실시간 시뮬레이션 소프트웨어 개발에 관한 연구 결과를 기술한다. 본 연구에서는 NASA의 UAM 임무 형상 및 요구도를 참고하여 Generic 쿼트 틸트 로터 eVTOL UAM 항공기 형상을 설계하고, 공력 데이터베이스 기반 공기역학, 추력 데이터베이스 기반 프롭로터역학, 항공기의 지면반력, 대기환경을 운동모델로 모델링하였다. 또한 회전익 모드, 천이 모드 및 고정익 모드 별 조종방법을 정의, 나셀 틸트각 Corridor 설정 후 실시간 비행 시뮬레이션 소프트웨어에 구현 후 수평비행 트림 해석을 수행하였다. 본 실시간 비행 시뮬레이션 소프트웨어를 통해 쿼드 틸트 로터 UAM 항공기의 트림 해석뿐 아니라 조종성(Handling Qualities) 예측, 동특성을 고려한 나셀 틸트각 스케줄러 최적화와 회전익, 고정익 및 천이 모드 별 비행 제어법칙 설계/검증 및 비행 시뮬레이터 탑재를 통한 비행 훈련 등 쿼트 틸트 로터 UAM 분야에서 다양한 목적으로 활용 가능할 것으로 예상한다.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음 (과제번호 RS-2022-00143965)

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