战损飞机动力学特性分析及杀伤研究  

Dynamic Analysis and Damage Study of Combat Aircraft

作　　者：巩彦明 韩庆[1] 

机构地区：[1]西北工业大学航空学院,西安710072

出　　处：《航空工程进展》2015年第1期38-45,共8页Advances in Aeronautical Science and Engineering

摘　　要：现代战争中,防空武器性能不断提升,对飞机造成的威胁越来越大,确定飞机受到打击时的杀伤状态及杀伤等级成为飞机设计时需要考虑的重要问题。飞机被防空武器击中时,可能发生机翼脱离损伤,其质量、面积产生明显变化,将导致飞机的重心、气动特性的变化,严重危害飞机的稳定性。针对上述情况,以某型作战飞机为例,建立损伤情况下的飞机模型,综合分析机翼脱离损伤对飞机重量、重心和机翼面积带来的影响;建立损伤飞机的气动模型,计算损伤飞机气动特性的变化情况。基于这些变化,分析损伤对飞机动力学特性的影响,建立损伤状态下的动力学方程,计算损伤飞机的失控时间,依此确定飞机的杀伤等级。本文所做研究可用于在飞机设计过程中分析其杀伤状态及杀伤等级,为飞机设计时飞机杀伤的分析评估提供一种有效的解法。In modern warfare, air defense weapons become more advanced, which may make great threat to the aircraft. It has become a non-negligible aspect during aircraft design to determine aircraft kill state and damage criterion class under the hit of threats. Once aircraft is damaged with its wing, its mass＇ and wing area will change obviously, which may result in the changes in aerodynamic characteristics and the center of gravity. These changes may be seriously harmful to the stability of the damaged aircraft. Considering this situation, a combat aircraft is selected and its aerodynamic model in damage state is established. The effects of wing lost on aircraft＇s weight, the center of gravity and wing area are analyzed. The changes of its aerodynamic characteris- tics are calculated by establishment of the aerodynamic model. Based on these changes, the influences of aircraft flight dynamics resulted from the damage are analyzed. And flight dynamics equations of damaged aircraft are established, by which the duration of the aircraft out of control can be calculated, and the damage criterion class of the aircraft is determined. The method can be used for analyzing aircraft kill state and determining damage criterion class during aircraft design.

关 键 词：战损飞机 动力学特性 气动特性 杀伤等级 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]