| タイトル | Computer-aided selection of materials for cryogenic turbopump bearings |
| 著者（英） | Maurer, R. E.; Pallini, R. A. |
| 著者所属（英） | SKF Industries, Inc. |
| 発行日 | 1985-05-01 |
| 言語 | eng |
| 内容記述 | The life requirement for the angular contact ball bearings in the Space Shuttle Main Engine (SSME) high-pressure-oxygen turbopump (HPOTP) is 7.5 hours. In actual operation, significantly shorter service life has been experienced. The objective of this current program is to identify bearing materials and/or materials processing techniques offering significant potential for extending HPOTP bearing performance life. A thermomechanical analysis of the HPOTP shaft/bearing system was performed with the SHABERTH (SHaft-BEaring-THermal) computer program. Bearing fatigue life, ball-race contact stress, heat generation rate, bulk ring temperatures, and circumferential stress in the inner rings were quantified as functions of radial load, thrust load, and ball-race contact friction. The analysis results were used to formulate criteria that are being used for the selection of special materials for future turbopump bearings. |
| NASA分類 | MECHANICAL ENGINEERING |
| レポートNO | 86A11090
ASLE PREPRINT 85-AM-4E-1 |
| 権利 | Copyright |
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