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NASA-LLIS-4596
Lessons Learned - Deaeration of Hydraulic Fluid
Year: 2011
Abstract: Description of Driving Event:
To meet Space Shuttle launch requirements, the proportion of dissolved air in the Orbiter's hydraulic fluid must be below 1 volume percent. Early in the Shuttle program, the deaeration system that removed the dissolved air from the hydraulic fluid was found to be unreliable and could not meet this requirement. A greater proportion of dissolved air could lead to pump cavitation and excessive softness in hydraulic-actuator force-versus-displacement characteristics.
To meet Space Shuttle launch requirements, the proportion of dissolved air in the Orbiter's hydraulic fluid must be below 1 volume percent. Early in the Shuttle program, the deaeration system that removed the dissolved air from the hydraulic fluid was found to be unreliable and could not meet this requirement. A greater proportion of dissolved air could lead to pump cavitation and excessive softness in hydraulic-actuator force-versus-displacement characteristics.
Subject: Ground processing and manifesting
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:04:20Z | |
| date available | 2017-09-04T15:04:20Z | |
| date copyright | 06/03/2011 | |
| date issued | 2011 | |
| identifier other | KYXKMEAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/1720 | |
| description abstract | Description of Driving Event: To meet Space Shuttle launch requirements, the proportion of dissolved air in the Orbiter's hydraulic fluid must be below 1 volume percent. Early in the Shuttle program, the deaeration system that removed the dissolved air from the hydraulic fluid was found to be unreliable and could not meet this requirement. A greater proportion of dissolved air could lead to pump cavitation and excessive softness in hydraulic-actuator force-versus-displacement characteristics. | |
| language | English | |
| title | NASA-LLIS-4596 | num |
| title | Lessons Learned - Deaeration of Hydraulic Fluid | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2011 | |
| contenttype | fulltext | |
| subject keywords | Ground processing and manifesting | |
| subject keywords | Systems analysis - cost analysis |