Review of vibration and noise suppression technologies for helicopter transmission systems
WEI Dahuan
LI Songbai
LI Xiaokang
YIN Mei
ZHU Xinhua
YAN Hongzhi
Abstract：[Significance]The helicopter transmission system is the key source of cabin noise,which significantly affects the flight quality and ride comfort.A systematic review of its vibration and noise suppression technologies can provide a technical basis and practical guidance for engineering design,system integration and domestic substitution.Research progress of vibration and noise suppression technologies for helicopter transmission systems at home and abroad was reviewed.[Analysis]Passive vibration suppression techniques(including structural optimization,damping,absorption,and isolation)and active vibration suppression techniques(covering actuators and active control algorithms)were elucidated.The research status of vibration suppression technology for transmission systems of special configurations of helicopters with high-speed flight characteristics,such as coaxial reverse twin rotor helicopters and tilt rotor helicopters,were summarized.At the same time,the vibration reduction mechanism of new transmission components such as magnetic gears,ceramic bearings,composite shafts,and casings was explored,as well as the research progress of revolutionary electric drive technologies such as electric tail rotor and fully electric drive.Finally,based on the current research status in China,suggestions were proposed for multidimensional optimization of active vibration suppression technology,technological innovation to promote the upgrading of new transmission components,and the development of new energy helicopters,in order to enhance the international competitiveness of China's helicopters.
Keywords：Helicopter transmission systemVibrationNoiseNew-type transmission componentElectric drive
Publication Date：2026-08-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：15( 19-33 )