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NASA-LLIS-0397
Lessons Learned - Viking Spacecraft Anomalous Power Turn-On
Year: 1995
Abstract: Abstract:
While on the launch pad, Viking experienced an anomalous power turn-on that resulted in a total discharge of the spacecraft batteries. Failure analysis had not detected that discrete failure of a relay located in support equipment could have caused the problem. All interfaces with the spacecraft should be subject to failure mode analysis, status indicators or alarms should be used, and the spacecraft should not be left unattended unless periodic monitoring is conducted.
While on the launch pad, Viking experienced an anomalous power turn-on that resulted in a total discharge of the spacecraft batteries. Failure analysis had not detected that discrete failure of a relay located in support equipment could have caused the problem. All interfaces with the spacecraft should be subject to failure mode analysis, status indicators or alarms should be used, and the spacecraft should not be left unattended unless periodic monitoring is conducted.
Subject: Ground Operations
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T18:14:37Z | |
| date available | 2017-09-04T18:14:37Z | |
| date copyright | 06/07/1995 | |
| date issued | 1995 | |
| identifier other | HIBEQCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsery=autho162s7D8308/handle/yse/197564 | |
| description abstract | Abstract: While on the launch pad, Viking experienced an anomalous power turn-on that resulted in a total discharge of the spacecraft batteries. Failure analysis had not detected that discrete failure of a relay located in support equipment could have caused the problem. All interfaces with the spacecraft should be subject to failure mode analysis, status indicators or alarms should be used, and the spacecraft should not be left unattended unless periodic monitoring is conducted. | |
| language | English | |
| title | NASA-LLIS-0397 | num |
| title | Lessons Learned - Viking Spacecraft Anomalous Power Turn-On | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1995 | |
| contenttype | fulltext | |
| subject keywords | Ground Operations | |
| subject keywords | Safety & Mission Assurance | |
| subject keywords | Spacecraft |