某型民机非计划水上迫降动态行为分析  

Analysis on Dynamic Behavior for Non-Planned Ditching of a Certain Type of Civil Aircraft

作　　者：王永虎[1] 吴志坚[1] 胡威 李旦[1] 

机构地区：[1]中国民航飞行学院飞行技术学院,四川广汉618307 [2]西北工业大学航空学院,陕西西安710068

出　　处：《山东交通学院学报》2017年第4期82-88,共7页Journal of Shandong Jiaotong University

基　　金：国家自然科学基金民航联合基金项目(U1333133);四川省教育厅科研项目(16ZB0030);中国民航飞行学院科研基金面上项目(J2014-04;J2016-65)

摘　　要：以马航MH370失事客机波音B777-200ER为研究对象,对楔形体入水进行压强和加速度数值验证,采用有限元软件LS-DYNA,运用流固耦合任意拉格朗日-欧拉方法建立飞机撞水计算模型。在5种不同工况下,研究初始偏转角和飞机质量对迫降姿态的影响,得到飞机偏转角、俯仰角、竖直加速度以及左右翼尖压强随时间变化的规律。仿真试验验证了运用ALE方法对模拟飞机非计划水上迫降的可行性,所得数据变化规律可为进一步研究飞机非计划水上迫降提供理论支持,并为失事飞机事故搜查提供技术参考。Boeing B777-200 ER,the crashed Airline MH370 from Malaysia is taken as the research object. The numerical verification of pressure and acceleration of wedge entry is carried out,and the calculation model of aircraft water collision is established by using the finite element software LS-DYNA and the flow solid coupling ALE analysis method. Under five different working conditions,the influence of the initial deflection angle and the aircraft mass on the landing attitude is studied,and the variation patterns of the deflection angle,the pitching angle,the vertical acceleration and the left-right wing tip pressure are obtained. The simulation test verifies the feasibility of using the ALE method to simulate the aircraft ditching plans,and the variation rule of the data can provide theoretical support for further study on the non-planned the aircraft ditching plans,and provide technical reference for the aircraft crash search.

关 键 词：水上迫降 流固耦合 撞水 ALE 

分 类 号：V328.3[航空宇航科学与技术—人机与环境工程]