直升机桨叶静强度分析中的一个新方法

在直升机桨叶的静强度分析中,传统的分析方法可能会由于载荷计算的不准确,给强度结论带来不确定性。比如,直升机在飞行过程中,若桨叶的动载荷大于计算载荷,这时候就无法判断桨叶是否满足静强度要求。若采用本文中推荐的新方法进行分析,就容易对桨叶的静强度下结论。

A New Method to Static Strength Analysis of Helicopter Blade

In the static strength analysis of helicopter blade,the traditional analysis method may lead to the uncertainty of the strength conclusion due to the inaccuracy of load calculation.For example,for the in-flight cases,if the dynamic load of the blade is higher than calculated one,it is impossible to determine whether the static strength of the blade meets the requirements or not.If,however,the new idea recommended in this paper is adopted,it will be easy to obtain the static strength conclusion of the blade.