천이 비행 중인 전기체 틸트로터 항공기의 로터 성능 및 후류 특성 분석 연구

초록

Tiltrotor aircraft are emerging as a promising next-generation vertical take-off and landing (VTOL) propulsion system due to their longer range and faster cruising speeds compared to conventional VTOL aircraft. However, flight instability in the transition zone, where the thrust direction of the tiltrotor changes, remains a critical challenge. This instability arises from the rapid variation in effective angle of attack, leading to nonlinear aerodynamic loads and the formation of irregular wake structures. These phenomena can significantly impact the aerodynamic characteristics of the fuselage and wings, ultimately reducing flight stability. This study predicts the aerodynamic performance of tiltrotor aircraft at different tilt angles using source-doublet panel method and unsteady vortex particle method. The wake interaction between the wake fields generated by the pair of rotors and the airframe significantly affects flight performance during transitional maneuvers. The results highlight the asymmetric wake evolution and their overall influence on the aerodynamic and stability characteristics of tiltrotor aircraft.

키워드