结冰条件下飞机全包线模态特性分析方法  

Analysis method of aircraft modal characteristics within the full envelope under icing conditions

作　　者：伍强 徐浩军[1] 裴彬彬 朱和铨 武欣 WU Qiang;XU Haojun;PEI Binbin;ZHU Hequan;WU Xin(Aeronautics Engineering College,Air Force Engineering University,Xi’an 710038,China;Unit 93705 of the PLA,Tangshan 064200,China)

机构地区：[1]空军工程大学航空工程学院,陕西西安710038 [2]中国人民解放军93705部队,河北唐山064200

出　　处：《系统工程与电子技术》2021年第10期2893-2901,共9页Systems Engineering and Electronics

基　　金：国家自然科学基金(61873351)资助课题。

摘　　要：针对飞机带冰飞行时全包线范围内飞行品质评估问题,提出一种结合自适应拟配初值计算与时域等效系统拟配对整个包线内的典型模态参数快速计算方法。建立了典型的人机环系统模型,通过数值仿真得到飞机对于方向舵倍脉冲操纵的响应数据,在分析时域响应数据特征的基础上,提出自适应计算横航向等效系统拟配初值的方法,解决了拟配初值的敏感性问题。运用时域等效系统拟配法,分别获取了某型飞机干净构型及不同结冰严重程度时,整个包线范围内横航向模态参数特性,进而从整体的角度量化了结冰对飞机飞行品质的影响。仿真结果表明,所提方法在全包线范围内具有较好的适应性,为快速分析飞行器纵横向典型模态特性提供了新的思路,具有较好的工程应用前景。Aiming at the problem of flight quality evaluation within the full envelope under icing conditions,a method for fast calculation of typical mode parameters in the whole envelope is proposed by combining adaptive initial value calculation with time-domain equivalent system fitting.A typical man-machine-loop system model is established.Numerical simulation is used to obtain the response data of the aircraft for rudder doublet manipulation.Based on the analysis of the characteristics of the time-domain response data,a method of adaptive initial value calculation of the lateral and directional equivalent system fitting is proposed to solve the sensitivity problem of the initial value.The time-domain equivalent system fitting method is used to obtain the lateral and directional modal parameter characteristics of a certain aircraft clean configuration and different degrees of icing severity in the entire envelope,and the effect of icing on the flight quality of the aircraft is quantified from an overall perspective.The simulation results show that the proposed method has good adaptability in the full envelope,which provides a new idea for the rapid analysis of the longitudinal and transverse typical modal characteristics of aircraft,and has a good engineering application prospect.

关 键 词：品质评估 等效系统拟配 拟配初值 自适应初值计算 数值仿真 

分 类 号：V212[航空宇航科学与技术—航空宇航推进理论与工程]