电动垂直起降飞行器（eVTOL）的发展与低空经济的联系日益紧密，倾转旋翼构型愈发受到行业青睐。准确界定过渡走廊是确保此类构型飞行器安全过渡飞行的关键。传统过渡走廊通过求解不同旋翼倾转角下可稳态平飞的速度区间（静态过渡走廊）来确定，然而该方法难以反映飞行器在直升机与飞机模式之间构型与速度同步变化的动态过程，从而隐含安全风险。为此，基于倾转双旋翼机的非线性飞行动力学模型，制定了过渡走廊低速段和高速段的边界条件，系统分析了不同加速度和爬升/下降速度对动态过渡走廊的影响，并与静态过渡走廊进行了对比。结果表明，随着加速度增加，不同旋翼倾转角对应的最大飞行速度呈现线性下降，而最小飞行速度的减小幅度则随旋翼倾转角度减小而减缓。在加速斜爬升的特定飞行状态下，动态过渡走廊面积相较静态过渡走廊减少约52%。不同过渡路径的飞行仿真结果进一步表明，仅依赖静态过渡走廊设计路径可能带来飞行安全隐患，如功率超限和机翼失速等。基于此，本文提出将动态与静态过渡走廊的重叠区域作为路径设计的安全边界，以提高过渡飞行的安全性。
The development of electric Vertical Take-Off and Landing (eVTOL) aircraft is increasingly linked to the low-altitude economy, with tiltrotor configurations gaining industry favor. Precisely defining the conversion corridor is key to ensuring the safe completion of transition flights for such configurations. Traditional conversion corridors are deter-mined by solving for speed ranges of steady-level flight at different rotor tilt angles (static conversion corridor). However, this method inadequately reflects the dynamic process where configuration and speed change synchronously between helicopter and airplane modes, posing safety risks. To address this issue, boundary conditions for both low-speed and high-speed segments of the conversion corridor are formulated based on a nonlinear flight dynamics model of a tiltrotor aircraft. The effects of different accelerations and climb/descent rates on the dynamic conversion corridor are systematically analyzed and compared with the static conversion corridor. Results show that as acceleration increases, the maximum flight speed corresponding to various rotor tilt angles decreases linearly, while the reduction in minimum flight speed slows as the rotor tilt angle decreases. In specific flight states involving accelerated climbing, the dynamic conversion corridor area is reduced by about 52% compared to the static conversion corridor. Flight simulation results of different transition paths further indicate that relying solely on static conversion corridor designs may introduce flight safety hazards such as power exceedance and wing stall. Consequently, this paper proposes using the overlapping region of dynamic and static conversion corridors as the safety boundary for path design, thereby improving the safety of transition flights.
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