大飞机机翼结冰对飞行动力学特性影响研究  

Study on the influence of wing icing on flight dynamics characteristics of large aircraft

作　　者：邵元培[1,2] 车竞[1,2] 丁娣[1,2] 

机构地区：[1]空气动力学国家重点实验室,四川绵阳621000 [2]中国空气动力研究与发展中心计算空气动力研究所,四川绵阳621000

出　　处：《飞行力学》2018年第1期12-15,19,共5页Flight Dynamics

基　　金：国家重点基础研究发展计划资助(2015CB755800)

摘　　要：机翼结冰会严重影响飞机的气动特性,威胁飞行安全。采用线化小扰动分析方法和非线性全局稳定性分析方法,对大飞机机翼对称结冰情况下的飞行动力学特性展开研究。研究结果表明:机翼结冰主要影响飞机的升阻特性,使得平衡迎角和需用推力增大,临界迎角和运载能力下降,对起降特性尤为不利;在操稳特性方面,机翼结冰会影响纵向短周期模态自由振荡频率,在少数情况下会降低短周期模态的阻尼比,同时操纵升降舵以及水平安定面进行纵向操纵时,在少数飞行状态下会出现不稳定情况。Wing icing has serious impact on airfoil aerodynamics,which is a serious threat to flight safety.Linear analysis and nonlinear global stability analysis are used in this paper to study the influence on flight dynamics caused by wing icing. Research results show that wing icing has great impacts on the lift and drag characteristics,increases the trimmed angle of attack and engine thrust sharply,which reduces the carrying capacity of the aircraft acutely and especially has adverse effect on take-off and landing performance. Wing icing also influences aircraft stability,which makes the aircraft unstable in a few cases when horizontal stabilizer and elevator are used simultaneously.

关 键 词：大飞机 机翼结冰 全局稳定性 飞行动力学 

分 类 号：V212.1[航空宇航科学与技术—航空宇航推进理论与工程]