基于可达集方法的结冰飞机着陆阶段安全风险评估  

Flight risk evaluation based on reachable set method at the phase of icing aircraft landing

作　　者：武朋玮 李颖晖[1] 郑无计 周驰 董泽洪 WU Pengwei;LI Yinghui;ZHENG Wuji;ZHOU Chi;DONG Zehong(Aeronautics and Astronautics Engineering College,Air Force Engineering University,Xi'an 710038,China)

机构地区：[1]空军工程大学航空工程学院,西安710038

出　　处：《航空学报》2018年第12期40-48,共9页Acta Aeronautica et Astronautica Sinica

基　　金：国家"973"计划(2015CB755805)~~

摘　　要：飞机在着陆过程中极易发生结冰的现象,结冰对飞行安全造成的危害极为严重。结冰导致飞机发生危险的原因是由于机翼或尾翼被冰层覆盖后空气动力学行为发生改变,飞机受力异常难以控制。为分析结冰后飞机的稳定性以保证飞行安全,以飞机纵向动力学系统为分析对象,将飞机结冰后状态的描述以可达集的形式进行,直观地判断飞机状态是否可控,以此确定飞机是否处于安全状态。以求解所得的可达集为基础,利用极值定理分析结冰飞机的风险概率模型,由模型计算不同情况下飞机的风险概率,最终得到飞机着陆阶段的安全风险评估结果,并由评估结果指导驾驶员操纵,从而保证飞机的安全飞行。The aircraft is prone to icing during the landing process,and the damage caused by icing to flight safety is extremely serious.The danger caused by icing to the aircraft is because that the aerodynamic behavior changes after the wing or tail is covered by the ice layer,and the aircraft is extremely difficult to control.In order to analyze the stability of the aircraft after icing and ensure the safety of the flight,the longitudinal dynamic system of the aircraft is taken as the analysis object,and the description of the state after the icing of the aircraft is carried out in the form of a reachable set,which is used to judge whether the state of the aircraft is controllable visually.All of this determines if the aircraft is in a safe state.Based on the reachable set obtained by the solution,the extreme value theorem is used to analyze the risk probability model of the icing aircraft.The model calculates the risk probability of the aircraft under different conditions,then it could obtain the safety risk assessment result of the aircraft during landing stage.Control of the driver is guided by the evaluation result,which ensures safe flight of the aircraft.

关 键 词：可达集 结冰飞机 安全包线 飞行风险概率 极值理论 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]