| Autor: |
Bai, Xueqiang, Lu, Fengxia, Li, Mou, Zhu, Wenlin, Zhu, Rupeng |
| Zdroj: |
International Journal of Design Engineering; 2023, Vol. 12 Issue: 1 p49-68, 20p |
| Abstrakt: |
Double row tapered roller bearings have excellent load-carrying behaviour and are widely used in helicopter tail drive systems. If the helicopter is attacked, the bearings are working at loss of lubrication condition. This study using the R10 method to discretise the amount of oil to explore the evolution of lubricating oil distribution in the support bearing of a helicopter tail drive system under lubrication loss conditions based on the idea of computational fluid dynamics (CFD) and considers the revolution and rotation speed of bearings. The lubricant distribution on the large rollers, small rollers, and inner ring walls on both asymmetrical sides was analysed, and the quantity of oil and lubricant inside the bearing were estimated. It is found that the recommended speed range of bearing is 4,000-5,000 r/min, and the value for the number of rollers in the bearing was determined to be no more than 22 large rollers and no more than 25 small rollers. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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