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NASA-LLIS-0413
Lessons Learned - Incorrect Actuations of Relays in Matrix (1975)
Year: 1996
Abstract: Abstract:
Because the Viking Orbiter power switching relays were arranged in a matrix, two relays could under certain conditions be inadvertently actuated when only one was commanded. A system control protocol should be established whereby independently requested relay actuations are executed in a predictable manner.
Because the Viking Orbiter power switching relays were arranged in a matrix, two relays could under certain conditions be inadvertently actuated when only one was commanded. A system control protocol should be established whereby independently requested relay actuations are executed in a predictable manner.
Subject: Flight Equipment
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:20:49Z | |
| date available | 2017-09-04T15:20:49Z | |
| date copyright | 06/26/1996 | |
| date issued | 1996 | |
| identifier other | ATBEQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/20780 | |
| description abstract | Abstract: Because the Viking Orbiter power switching relays were arranged in a matrix, two relays could under certain conditions be inadvertently actuated when only one was commanded. A system control protocol should be established whereby independently requested relay actuations are executed in a predictable manner. | |
| language | English | |
| title | NASA-LLIS-0413 | num |
| title | Lessons Learned - Incorrect Actuations of Relays in Matrix (1975) | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1996 | |
| contenttype | fulltext | |
| subject keywords | Flight Equipment | |
| subject keywords | Ground Operations | |
| subject keywords | Spacecraft |