结合直升机的飞行载荷特点及使用要求 ,采用某型直升机动部件飞行测量载荷数据 ,经过“三峰谷点”雨流计数法统计处理 ,对飞行中实测到的 1 83个飞行状态分别进行统计处理、假设检验及回归分析 ,确定了每个飞行状态的载荷分布类型及飞行状态的损伤 ,最后压缩归并成对直升机某动部件产生较大损伤的 1 8种飞行状态 ,并提出了飞行状态中载荷的分布类型对直升机动部件的寿命有较大的影响 According to the characteristics and requirements of the helicopter’s flight load, a certain type of helicopter moving parts is used to measure the flight load data. After statistical processing of the “three peaks and valley” rain flow counting method, the statistical data of the 183 flight states measured in flight are respectively processed, Hypothesis testing and regression analysis to determine the type of load distribution and flight state damage for each flight state, and finally compressed and merged into 18 kinds of flight conditions that cause greater damage to certain moving parts of the helicopter, and proposed that the flight state load The type of distribution has a large impact on the life of helicopter moving parts