高机动无人机机体结构疲劳寿命分析方法研究  

Study on Fatigue Life Analysis Method of High Mobility UAV Body Structure

作　　者：邸洪亮[1] 陈亮[1] Di Hongliang;Chen Liang(AVIC Shenyang Aircraft Design and Research Institute,Shenyang 110035,China)

机构地区：[1]航空工业沈阳飞机设计研究所,辽宁沈阳110035

出　　处：《航空科学技术》2022年第6期41-45,共5页Aeronautical Science & Technology

摘　　要：高机动无人机具有过载大、机动多变的特性,其过载可以远超出现代有人战斗机的最大过载水平,应根据无人机的用途及需求选取可靠的疲劳分析方法。为满足无人机高可靠度下的使用寿命,并具有良好的经济性,本文对无人机与有人战斗机在结构、使用方式、可靠性等方面进行比较分析,并从无人机机体材料、受载情况及载荷特点出发,利用高机动无人机不同安全系数下的结构疲劳试验寿命研究结果,总结出高机动无人机结构裂纹扩展寿命的特点和结构破坏模式,给出了满足高机动无人机使用条件下的结构寿命分析方法。High maneuverability UAV has the characteristics of large overload and variable maneuverability, and its overload can far exceed the maximum overload level of modern manned fighter aircraft. Therefore, a reliable fatigue analysis method should be selected according to the use and demand of UAV. To meet the service life of the UAV under high reliability and make it have good economy, in this paper, a comparative analysis is conducted on the structure, operation modes and reliability of the UAV and manned fighter. This paper also summarizes the characteristics of crack propagation life and failure mode of high mobility UAV structure in terms of UAV body material, load conditions and load characteristics and taking use of the research results of structure fatigue test life under the safety coefficiency of the high maneuverability UAV. The structure life analysis result is given to satisfy the service conditions of high maneuverability UAV.

关 键 词：高机动 无人机 结构 寿命 安全系数 裂纹扩展 

分 类 号：V224[航空宇航科学与技术—飞行器设计]