During ground debugging in an extremely low temperature environment(-44.5 ℃),the tail rotor hub of helicopter experienced axial hinge rotation difficulties.In this paper,the design and manufacturing part analyzed and conducted sufficient experiments on fault phenomena,structural dimension design,and the impact of temperature on part dimensions,and took corresponding measures.These measures had been validated through ground tests and in-stallation flight tests and had achieved good implementation results.
关键词
直升机/尾桨毂/轴向铰/转动困难
Key words
helicopter/tail rotor hub/axial hinge/difficult to rotate
维普
万方数据