모멘텀 휠용 라비린스실 개발

• Published in: 항공우주시스템공학회지 Vol. 1; no. 4; pp. 37 - 41
• Main Authors: 전동익(Dong-Ik Cheon), 오화석(Hwa-Suk Oh), 이상철(Sangchul Lee), 변상균(Sang-Kyun Byun), 박종승(Jong-Seung Park), 강민영(Min-Young Kang), 이승우(Seung-Woo Rhee)
• Format: Journal Article
• Language: Korean
• Published: 항공우주시스템공학회 2007
• Subjects: Labyrinth Seal(라비린스 실); Bearing(베어링); Momentum Wheel(모멘텀 휠); Lubricant(윤활유); Vacuum(진공)
• ISSN: 1976-6300; 2508-7150

Labyrinth seal is most common way to protect the bearings installed in Reaction wheel. In spite of wide applications, no such research was found about the sealing utility of the Labyrinth seal in the condition of vacuum and high temperature. In this research, we tried to verify the utility of Labyrinth seal. Numerical analysis had been executed to predict the benefit of the Labyrinth seal and also experiments were performed to verify the utilization. Two Bearings were installed at the vacuum chamber, one was assembled with Labyrinth seal and the other was stand alone. After executing the vacuum test, it was found to be the stand alone bearing had lost more weight than the one that was assembled with the labyrinth seal. In this result, it is verified that the Labyrinth seal has useful function to preserve the lubricant that affects to the life-cycle of the Bearing.