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NASA-LLIS-1598
Lessons Learned – Manage Reaction Wheels as a Limited Spacecraft Resource (2002)
Year: 2005
Abstract: Abstract:
After two and one-half years of operational use, a bearing cage instability trend developed in a bearing in one of three Cassini reaction wheels. JPL responded to the indication of life-limiting wear through steps to manage RWA use, including tracking RWA performance, limiting RWA usage, using a software tool to manage reaction wheel biasing events, and providing a reaction wheel drag torque estimator to identify anomalous bearing drag conditions.
After two and one-half years of operational use, a bearing cage instability trend developed in a bearing in one of three Cassini reaction wheels. JPL responded to the indication of life-limiting wear through steps to manage RWA use, including tracking RWA performance, limiting RWA usage, using a software tool to manage reaction wheel biasing events, and providing a reaction wheel drag torque estimator to identify anomalous bearing drag conditions.
Subject: bearing failure
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:46:47Z | |
| date available | 2017-09-04T17:46:47Z | |
| date copyright | 06/27/2005 | |
| date issued | 2005 | |
| identifier other | EMYCQCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std/handle/yse/169979 | |
| description abstract | Abstract: After two and one-half years of operational use, a bearing cage instability trend developed in a bearing in one of three Cassini reaction wheels. JPL responded to the indication of life-limiting wear through steps to manage RWA use, including tracking RWA performance, limiting RWA usage, using a software tool to manage reaction wheel biasing events, and providing a reaction wheel drag torque estimator to identify anomalous bearing drag conditions. | |
| language | English | |
| title | NASA-LLIS-1598 | num |
| title | Lessons Learned – Manage Reaction Wheels as a Limited Spacecraft Resource (2002) | en |
| type | standard | |
| page | 4 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2005 | |
| contenttype | fulltext | |
| subject keywords | bearing failure | |
| subject keywords | excessive torque | |
| subject keywords | Flight Equipment | |
| subject keywords | Flight Operations | |
| subject keywords | Ground Operations | |
| subject keywords | Hardware | |
| subject keywords | lubricant loss | |
| subject keywords | Materials & Processes | |
| subject keywords | momentum wheels | |
| subject keywords | Parts | |
| subject keywords | Risk Management/Assessment | |
| subject keywords | Safety & Mission Assurance | |
| subject keywords | Spacecraft | |
| subject keywords | Test & Verification | |
| subject keywords | torque instability | |
| subject keywords | tribology |