摘要
作战生存力是作战飞机的关键设计指标,分为敏感性和易损性两大研究领域。易损性侧重研究飞机被毁伤威胁命中之后的毁伤特性,常用的度量指标为命中条件下的杀伤概率或易损面积。结构平台是作战飞机功能的载体,结构易损性是飞机易损性的基础,设计规范对结构易损性提出了明确的要求,试验和数值方法是结构易损性评估的主要手段。本文介绍了飞机结构易损性研究的流程,梳理了相关设计规范的要求和研究体系,归类了主要的毁伤威胁和杀伤模式,给出了结构易损性建模与关键结构确定方法,梳理了易损性评价准则和评估方法。总结了燃油箱和操纵面等关键结构在典型毁伤效应作用下的易损性评估方法,以及多毁伤效应耦合作用下的易损性评估方法。结合先进航空结构技术和新质毁伤技术的发展,对结构易损性评估方法的发展方向和重点进行了展望。
Combat survivability which is divided into sensitivity and vulnerability is the key design index of aircraft.Vulnerability focuses on the damage characteristics of aircraft after being hit by damage threat. And the commonly used measure is the kill probability or vulnerable area. Structure is the carrier of combat aircraft function, so the structural vulnerability is the basis of the aircraft’s vulnerability. The design specifications put forward clear requirements for structural vulnerability which is usually evaluated by experimental and numerical methods. This paper introduces the process, the requirements and research system of relevant design specifications, the main damage threats and killing modes, the structural vulnerability modeling and determination methods of aircraft structural vulnerability research. Then it summerizes the vulnerability assessment methods of vulnerable structures such as fuel tank and control surface under typical damage effects and the coupling of multiple damage effects.Finally, combined with the development of advanced aviation structure technology and new damage technology, the development direction and focus of structural vulnerability assessment method are prospected.
作者
刘小川
张宇
Liu Xiaochuan;Zhang Yu(Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics,Aircraft Strength Research Institute of China,Xi’an 710065,China)
出处
《航空科学技术》
2021年第12期42-56,共15页
Aeronautical Science & Technology
关键词
作战飞机
生存力
易损性
关键结构
评估方法
combat aircraft
survivability
vulnerability
key structure
assessment method
