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作战飞机易损性分析是其生存力设计与评估的基础问题之一。参考某型战机实弹打击试验结果,分别建立了该机在破片、离散杆和连续杆战斗部打击下的三种典型损伤模型,基于N-S方程数值模拟的方法计算该机在受损前后的纵向气动特性。对连续杆战斗部所造成的切断损伤,进一步研究了纵向配平问题。研究结果表明,相对于破片和离散杆战斗部,连续杆战斗部造成的损伤对其气动影响更为显著,甚至可能导致飞机在特定状态下的杀伤。研究结果可用于战损飞机杀伤准则的判定。
Vulnerability analysis of combat aircraft is one of the basic issues in its viability design and evaluation. According to the test results of a certain type of fighter bomb, the typical damage models of the aircraft under the attack of fragment, discrete rod and continuous rod warhead were established respectively. Based on the numerical simulation of NS equation, the longitudinal aerodynamic characteristic. On the continuous bar warhead caused by the cut damage, further study of the vertical trim problem. The results show that the damage caused by the continuous-rod warhead has more significant aerodynamic effects than the fragmentation and discrete-bar warheads and may even lead to the killing of the aircraft under certain conditions. The results of the study can be used to determine the criteria of combat damage to aircraft.