直升机抖振分析方法研究  

Analysis Method of Helicopter Shake Vibration

作　　者：刘忠超[1] LIU Zhongchao(China Helicopter Research and Development Institute,Jingdezhen 333001,China)

机构地区：[1]中国直升机设计研究所,江西景德镇333001

出　　处：《直升机技术》2020年第1期28-31,共4页Helicopter Technique

摘　　要：针对试飞中出现的低频机体抖振问题,基于驾驶舱振动信号和飞行参数,提出了一种有效的数据分析方法,并进行了飞行参数的相关性分析,指出了侧滑角对抖振的重要影响。分析结论可为飞行及解决抖振问题提供指导。Shake vibration in the helicopter cabin is often encountered during early flight testing.Based on vibration signal and flight parameter,an effective method that analyses shake vibration characteristic was constructed in this paper.Further,identified the correlation between shake vibration in the cabin and flight parameter,and found out the key factor that encourages shake vibration was fuselage incidence.The analysis conclusion could supply guidance for flight and solving shake vibration in the cabin.

关 键 词：直升机 抖振 侧滑角 

分 类 号：V214.33[航空宇航科学与技术—航空宇航推进理论与工程]