水陆两栖飞机平静水面着水冲击载荷影响因素分析

An Experimental Study about Impact Load of the Amphibious Aircraft Landing on the Calm Water

在进行水陆两栖飞机结构设计和强度校核时,着水冲击载荷是主要载荷工况,是影响飞机结构强度的主要因素。水陆两栖飞机着水冲击过程是一个复杂的气、液、固三相耦合过程,影响因素主要包括:飞机几何参数、飞机运动参数、重量与重心位置、水面情况、飞机与水面遭遇位置等。为研究水陆两栖飞机平静水面着水冲击过程中各参数对着水冲击载荷的影响,以某型水陆两栖飞机为例,通过全机无动力模型平静水面着水冲击试验,分析了水陆两栖飞机着水冲击过程中运动响应和冲击载荷的时间历程,研究了水平速度、着水姿态、重心位置对水陆两栖飞机平静水面着水过载的影响。

When designing the structure and checking the strength of amphibious aircraft,the impact load of landing water is the main loads condition,which is the main factors of influencing the aircraft structure strength.Landing water process of amphibious aircraft is a complex gas,liquid and solid three-phase coupling process,which include these influencing factors： geometric parameters of the aircraft,motion parameters,weight and weight ＇s center of the aircraft,water situation,the position of aircraft encounter water surface. Amphibious aircraft landing calm water in the process of influence of various parameters on the landing water impact load was studied. An experimentation device was introduced to test the amphibious aircraft landing water impact load. As a certain amphibious aircraft example,the aircraft landing water features,analysis the influence of the aircraft acceleration of horizontal velocity,landing water attitude,gravity position,meanwhile validation the effectiveness of this experimentation method were studied.