有浪条件下舰载机弹射起飞建模研究

Modeling of Carrier-based Aircraft's Catapult Launch under Surf

有浪条件下,航空母舰的摇摆会影响舰载机的安全起飞。对有浪条件下舰载机弹射起飞过程受力、运动情况进行了分析。采用柔性起落架来实现航空母舰与舰载机之间的干涉,建立了模块化的仿真系统并研究了中等海况下航空母舰的摇摆对舰载机弹射起飞的影响。仿真结果表明,中等海况下纵摇是导致下沉的主要因素,最大下沉量可达15 m;横摇导致最大下沉约0.2 m;垂荡导致最大下沉约1 m;横摇会导致明显的横侧向运动;纵摇、横摇、垂荡均会导致起落架最大载荷显著增大。

The carrier＇s swing can endanger the safety of carrier-based aircraft launching.The forces and motions during the carrier-based aircraft catapult launch under surf,adopted flexible gear model to achieve interaction between the carrier-based aircraft and the carrier are theoretically analyzed,founded a modularized simulation system and researched on the influence of carrier＇s rocking on aircraft＇s catapult launch.Simulation results show that under moderate sea conditions,the pitch is the main factor leading to the subsidence which can up to 15 meters while roll resulting about 0.2 m and heave resulting about 1 m in the maximum subsidence.Roll also leads to significant lateral movement.Pitch,roll and heave result are significantly increased in load of gear.