【摘要】 在弹射起飞准备阶段，舰载机轴线并不能准确地与弹射轨道重合，产生一定的偏心距。为了分析舰载机不同初始偏心距下的弹射起飞的动态特性，以某轻型舰载机为例，建立了舰载机弹射起飞六自由度动力学模型，仿真分析了不同初始偏心距对舰载机姿态运动、弹射杆受力、起落架受力的影响。计算结果表明，初始偏心距对舰载机姿态中的偏航运动影响最为显著，随着初始偏心距的增大，偏航幅值增大，侧向力增大，主起落架垂向受力差值增大，但初始偏心距对舰载机的俯仰运动的影响较小。更多还原

【Abstract】 In the preparation stage of catapult take-off, the axis of carrier-based aircraft can not coincide with the ejection track well, resulting in a certain eccentricity.In order to analyze the dynamic characteristics of carrier-based aircraft under initial eccentricity, a light carrier-based aircraft was taken as an example, the six-degree-of-freedom dynamics model of carrier-based aircraft catapult take-off was established, and the effects of initial off-center distance on the attitude motion of carrier-based aircraft, the force of ejection rod and the force of landing gear were simulated and analyzed.The results show that the initial off-center distance has the most significant effect on the yaw motion in the attitude of the carrier aircraft.With the increase of the initial off-center distance, the yaw amplitude and lateral force increase, and the difference of vertical force on both sides of the main landing gear increases, but the initial off-center distance has little effect on the pitch motion of the carrier-based aircraft.更多还原