偏中心定位对弹射过程中飞机姿态的影响

舰载飞机弹射起飞时,由于航母运动等因素的影响,飞机往往无法与弹射轨道对中.针对这种情况,在考虑航母运动以及起落架缓冲和轮胎弹性的基础上,建立六自由度偏中心定位弹射起飞数学模型,研究了在航母典型运动状态下不同初始偏心距离对弹射起飞过程中飞机姿态的影响,结果表明:初始偏心距离对飞机的偏航运动影响最大,偏航运动的幅度随初始偏心距离的增大而增大;在弹射滑跑过程中,飞机的偏航运动有明显的衰减趋势;弹射杆所承受的侧向弯矩随初始偏心距离的增大而增大.研究结果为舰载飞机的设计提供了一定的理论参考.

Effects of off-center location on aircraft attitude during catapult launch

Owing to the deck motion and some other factors, the aircraft often has off-center distance with the catapult orbit. To study with this phenomenon, considering the deck motion, landing gear cushion and flexible tires, a six-degree-of-freedom mathematic model of carrier-based aircraft off-center catapult launch was established. The aircraft attitude during catapult taxing affected by the off-center distance with typical deck motion was studied. From the off-center catapult launch calculation, three important conclusions were obtained.The yaw movement are affected clearly by the initial off-center distance and its amplitude increases with the increase of the initial off-center distance.The attenuation of the yaw movement is clearly during catapult taxing and the launch bar side bending moment increases with the increase of the initial off-center distance. The results provide theoretical foundation for carrier-based aircraft design.