本文介绍了工程设计阶段直升机旋翼系统部件强度设计的流程和方法。其中采用的 SIZING LOAD(打样载荷)处理方法把计算载荷谱、设计目标寿命与部件构型设计用一个值联系起来,对结构的优化设计和后续生产问题的处理,提供了一种简便有效的手段。以自动倾斜器不动环疲劳试验为例,介绍了试验中问题的处理方法与思路。 This article describes the engineering design phase helicopter rotor system components strength of the design process and methods. The SIZING LOAD treatment method used therein relates a calculated load spectrum, a design target life and a component configuration design with a value that provides a simple and effective means of optimizing the design of the structure and of subsequent production problems . Taking the fatigue test of the automatic tilting device as an example, the method and idea of ​​the problem in the experiment are introduced.