直升机主减液弹隔振技术的发展现状及趋势

Development and Trend of Helicopter Main Reduction Fluidlastic Vibration Isolation Technology

直升机振动的主要来源是桨叶旋转过程中产生的桨毂激振力,这种激振力通过主减装置传递到机身,造成机身的剧烈振动,因此,降低旋翼以及机体的振动水平成为直升机动力学设计中的首要问题。液弹隔振器作为一种高效隔振、结构紧凑的隔振装置,能够显著地降低桨叶旋转中产生的激振力的传递,从而降低飞机的振动水平,提高飞行质量。本文对被动及主动式液弹隔振技术国内外发展的现状进行了阐述,并对液弹隔振技术的工程应用的发展趋势进行了分析和展望。

The main source of helicopter vibration is the hub vibration force generated during the blade rotation.This vibration force is transmitted to the fuselage through the main reduction device,causing severe vibration of the fuselage.Thus reducing the vibration level of the rotor and the body,is one of the primary issue in helicopter dynamics design.As a highly efficient and compact vibration isolator,the fluidlastic isolator can significantly reduce the transmission of the exciting force generated during the rotation of the blades,thereby reducing the vibration level of the aircraft and improving the flight quality.This article describes the current status of the development of passive and active fluidlastic vibration isolation technology at home and abroad,analyzes and prospects for the development of engineering applications of fluidlastic vibration isolation technology.