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| Accurate oil supply design and analysis of attitude control flywheel bearing oil feeder |
| Received:November 30, 2022 Revised:June 20, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20221130001 |
| KeyWord:vehicles bearings oil feeder attitude control flywheel |
| Author | Institution |
| 刘玉浩 |
大连理工大学 工程力学系 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
| 武洪凯 |
大连理工大学 工程力学系 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
| 张宇翔 |
大连理工大学 工程力学系 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
| 吴承伟 |
大连理工大学 工程力学系 工业装备结构分析优化与CAE软件全国重点实验室, 大连 |
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| Abstract: |
| An attitude-control flywheel bearing-rotor system is an important control component of flight attitude of space vehicles,which imposes strict requirements for bearing lubrication accuracy and oil supply reliability.Based on the reverse design principle of solid clearance seals,this paper designs a miniature oil supplier that automatically adjusts the oil supply rate by centrifugal force,making full use of the space between the two bearings,with simple structure and high reliability.The theoretical analysis model of fluid-structure interaction of oil supply rate is established.Based on this model a semi-analytical solution of the oil supply rate is obtained,and the influence of the geometric parameters of the interference contact surface of the oil supplier on the oil supply rate is studied.It is found that the oil supply rate and oil supply amount can be accurately controlled by optimizing the geometric size,surface roughness and interference coordination pressure of the interference coordination gap,and the oil supply rate is proportional to the cubic and circumferential length of the nominal gap of the interference contact interface,and is inversely proportional to the viscosity of the lubricating oil and the axial width of the contact surface.The oil supply rate is proportional to the square of the bearing speed,so that the bearing can automatically get enough lubricating oil when running at high speed.This technology can be applied to the precision attitude control flywheel system of spaceraft and the fuel supply design of various other precision bearing rotor systems. |
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