空中加油机给油插头撞击受油机结构数值仿真研究

Numerical simulation of the receiver aircraft components impacted by the oil joint of the tanker aircraft

摘要:

空中加油过程中可能发生给油插头脱离加油软管而与受油机发生撞击，导致受油机结构严重受损，危及安全。为确保受油机部件抗撞击能力，以受油机不同部位为研究对象，采用瞬态非线性冲击分析方法，对受油机不同部位与给油插头相互碰撞的过程进行了动力学仿真，研究给油插头以不同撞击姿态和不同撞击速度对受油机不同部位撞击损伤的影响。结果表明：相较于给油插头尾部垂直撞击，给油插头头部垂直撞击更具破坏性；当给油插头头部垂直撞击风挡和上壁板时，前缘的中心位置是最薄弱的撞击位置；受油机抗撞击设计需要保证各结构部件的刚度分布合理。

Abstract:

In the process of air refueling, the oil joint of the tanker aircraft may break away from the air refueling hose and collide with the receiver aircraft, which can lead to significant damage to the receiver aircraft components and endanger the safety. In order to ensure the anti-impact ability of the receiver aircraft components, the dynamic simulation of the collision process between different parts of the receiver aircraft and the oil joint was carried out by using a transient nonlinear impact analysis, and the effects of different impact attitudes and different impact velocities of the oil joint on the impact damage of the receiver aircraft components were studied. It was concluded that the higher the impact velocity, the more serious the damage of the receiver aircraft, and the damage degree of that is non-linear with the impact velocity. Besides, the vertical impact of the oil joint head is more destructive than that of the oil joint tail. When the oil joint head impacts the windshield or the upper wall panel vertically, the center of the leading edge is the weakest location for the vertical impact. It was also found that the stiffness matching between the structural components should be considered in the anti-impact design of the receiver aircraft.