Key dimension design and experiment of spherical hinge fusing structure on aero-engine

被引：0
|
作者：
Zhou X. [1 ]
Hou L. [1 ,2 ]
Huang W. [3 ]
Liao M. [1 ]
Zhao L. [1 ]
机构：
[1] School of Power and Energy, Northwestern Polytechnical University, Xi’an
[2] National Key Laboratory of Science and Technology on Liquid Rocket Engines, Xi’an Aerospace Propulsion Institute, China Aerospace Science and Technology Corporation, Xi’an
[3] Commercial Aircraft Engine Company Limited, Aero Engine Corporation of China, Shanghai
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2023年 / 38卷 / 10期
关键词：
critical speed; experimental verification; fuse pin; spherical hinge fusing structure; sudden unbalance;
D O I：
10.13224/j.cnki.jasp.20220224
中图分类号：
学科分类号：
摘要：
The working mechanism of spherical hinge fusing structure was analyzed， the key dimensions were extracted，a simulation spherical hinge fusing mechanism was designed，and experimental verification was completed. It was found that the key parameters of the spherical hinge fusing device include fusing pin thin surface，pin material，and pin position. Its main roles should focus on reducing the angle of the second bearing through the relative slip of inner and outer rings of the inner bearing seat under the large unbalance，and protecting the second bearing. After the spherical hinge structure was fused，the stiffness was further weakened and the critical speed of the rotor was reduced，which reduced the critical speed of the engine when it decelerated to the windmill speed，and further reduce the unbalanced load in the case of beyond the critical rotating speed. © 2023 BUAA Press. All rights reserved.
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页码：2536 / 2544
页数：8
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