航母纵摇对舰载机弹射起飞下沉量的影响因素分析  

Influence factor analysis on the catapult launch of the carrier-based aircraft by the aircraft carrier's vertical toss

作　　者：冯宇鹏 陈斌 张斌 夏斌 李锐 FENG Yu-peng;CHEN Bin;ZHANG Bin;XIA Bin;LI Rui(Technical Center,Chengdu Aircraft Industrial (Group) Co.,Ltd,Chengdu 610092,China)

机构地区：[1]成都飞机工业(集团)有限责任公司技术中心,四川成都610092

出　　处：《飞行力学》2019年第1期22-27,共6页Flight Dynamics

摘　　要：为了研究舰载机弹射起飞过程中航母纵摇对下沉量的影响,提高弹射起飞的安全性,建立了考虑前起落架的舰载机弹射起飞动力学模型,分析计算了不同纵摇初相位下的离舰下沉量,并论述了其运动学成因。研究结果表明:在0°～90°的初相位下,离舰下沉量大于3 m,超过安全边界,其他初相位下均符合安全性边界条件;离舰航迹角的方向和大小决定了下沉速度和下沉量的大小;当离舰航迹角在0°附近时,离舰迎角的大小直接决定了舰载机下沉量的大小;离舰后失去地效,影响舰载机的升力系数,以致对下沉量的加速度变化有重要影响。To study the influence of the aircraft carrier’s vertical toss on the catapult launch of the carrierbased aircraft,a dynamic model considering the nose landing gear of the catapult launch is established to improve the safety of the catapult launch.The deflection after take-off is calculated at different vertical toss initial phases,and the dynamic reason of this phenomenon is analyzed.The results show that deflection after taking off is out of safety limit for which is bigger than 3 m when the initial phase is 0° ~ 90°,and is satisfied safety limit in other initial phase.The velocity and deflection is decided by the direction and value of the flight-path angle.The value of angle of attack has great influence on the deflection in condition of the flight-path angle 0°.The loss of ground effect has great influence on the accelerated velocity of the deflection by changing the lift coefficient.

关 键 词：弹射起飞 航母纵摇 下沉量 前起落架 

分 类 号：V212.1[航空宇航科学与技术—航空宇航推进理论与工程] V216.7