根据倾转旋翼机的布局特点,建立了包含旋翼、机翼、垂尾、平尾(含舵面)和机身的气动模型及全机飞行力学模型。对不同重心位置模型进行配平分析,在配平的基础上进行了线性模型的提取和分析,给出倾转旋翼机重心包线的计算方法。最后以XV15倾转旋翼机为算例进行不同重心位置的配平、稳定性分析和重心包线计算。结果表明该方法合理有效。 According to the characteristics of tilting rotorcraft, the aerodynamic model including the rotor, the wing, the tail, the tail (including the rudder surface) and the fuselage and the whole aircraft flight mechanics model are established. Based on the grading, the linear model was extracted and analyzed, and the calculation method of tilting rotor center line envelope was given. Finally, taking the XV15 tilting rotorcraft as an example, the balancing and stability analysis of different center of gravity and the calculation of the center of gravity envelope are carried out. The results show that the method is reasonable and effective.