民用电传飞机颤振/ASE试飞风险控制技术  

Flutter/ASE Flight Test Risk Control Technique of Civil Fly-by-wire Aircraft

作　　者：王海刚 张绍云 WANG Haigang;ZHANG Shaoyun(Department of Flight Test Operation,COMAC Flight Test Center,Shanghai 210016,China)

机构地区：[1]中国商飞民用飞机试飞中心试飞运行部,上海210016

出　　处：《航空工程进展》2022年第1期101-106,共6页Advances in Aeronautical Science and Engineering

摘　　要：现有颤振/ASE试飞风险控制技术相关研究不够系统全面,未充分考虑民用电传飞机试飞特点及机上试飞工程师的作用。系统地研究民用电传飞机颤振/ASE试飞风险控制技术,包括理论评估、测试改装、试飞方法、试飞风险分析、风险降低措施和应急处置程序制定等;针对识别出的颤振/ASE不稳定、不良操稳特性和局部结构损坏等风险源,提出振动超限或异常时客舱试飞工程师切断激励的新技术,开发地面监控专用软件用于实时颤振/ASE裕度定量分析;在某型号试飞中应用该技术进行颤振/ASE试飞科目验证。结果表明:该风险控制技术能够有效降低试飞风险和成本,人工切断技术可在1 s内中止激励保障飞机结构安全,实时分析技术可以快速准确计算稳定裕度并且提高试飞效率。The existing research on flight test risk control techniques related to flutter/ASE test is not systematic enough,and has limited consideration of civil fly-by-wire aircraft characteristic and onboard flight test engineer.The flutter/ASE flight test risk control technique is systematically studied,which includes the theoretical evaluation,test modification,flight test method,flight test risk analysis,risk mitigation measures and emergency procedures formulation.Aiming at three identified hazards including flutter/ASE instability,adverse handling quality and local structure damage,a new technique is proposed for onboard flight test engineers to cutoff the excitation when the vibration limit is exceeded or abnormal.The dedicated ground monitor software is developed to perform the margin quantitative analysis of flutter/ASE in real time.The technique is applied to a certain model flight test for flutter/ASE flight test verification.The results show that the risk control technique can reduce the flight test risk and cost effectively,the manual cutoff technique can stop the excitation within 1 second to protect the aircraft structure safety,and the real-time analysis technique can calculate the stability margin quickly and improve the flight test efficiency.

关 键 词：颤振/ASE试飞 扫频激励 风险评估 人工切断 实时分析 

分 类 号：V217.3[航空宇航科学与技术—航空宇航推进理论与工程]