简要分析了直升机的发展,特别是高速旋翼机对于变转速传动系统技术的需求,介绍了技术发展历程及在型号上应用的情况;阐述了当前研究的几种变转速传动系统技术方案的构型和原理,包括NASA的LCTR2传动系统方案,以及西科斯基公司和贝尔公司的几个方案;最后,文章对变转速传动系统技术的发展前景做出了展望。 This paper briefly analyzes the development of helicopters, especially the demand of high-speed rotorcraft for the variable-speed drive system technology, introduces the development history of the technology and the application in the model, and elaborates the configurations of several variable speed drive system schemes currently studied And principles, including NASA’s LCTR2 drivetrain program, as well as Sikorsky and Bell’s programs; and finally, the article provides an outlook for the development of variable speed drivetrain technology.