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NASA-LLIS-0288
Lessons Learned – Galileo Spacecraft Safing During Star Scanner Calibration
Year: 1993
Abstract: Abstract:
An unintended in-flight mode change impacted a planned Galileo sequence only because of a hardware failure during the sequence. The spacecraft entered safing, necessitating a difficult recovery process that could have impacted science return had it happened during encounter. When simulating and testing command sequences, assure that the software and hardware states exactly match the expected in-flight states. Any anomaly that changes a fundamental spacecraft state must be scrutinized for potential impacts.
An unintended in-flight mode change impacted a planned Galileo sequence only because of a hardware failure during the sequence. The spacecraft entered safing, necessitating a difficult recovery process that could have impacted science return had it happened during encounter. When simulating and testing command sequences, assure that the software and hardware states exactly match the expected in-flight states. Any anomaly that changes a fundamental spacecraft state must be scrutinized for potential impacts.
Subject: Flight Operations
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T18:39:45Z | |
| date available | 2017-09-04T18:39:45Z | |
| date copyright | 07/13/1993 | |
| date issued | 1993 | |
| identifier other | JSZCQCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;query=autho162sAF679D40AC421854DD6EFDEC9FCD/handle/yse/221423 | |
| description abstract | Abstract: An unintended in-flight mode change impacted a planned Galileo sequence only because of a hardware failure during the sequence. The spacecraft entered safing, necessitating a difficult recovery process that could have impacted science return had it happened during encounter. When simulating and testing command sequences, assure that the software and hardware states exactly match the expected in-flight states. Any anomaly that changes a fundamental spacecraft state must be scrutinized for potential impacts. | |
| language | English | |
| title | NASA-LLIS-0288 | num |
| title | Lessons Learned – Galileo Spacecraft Safing During Star Scanner Calibration | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1993 | |
| contenttype | fulltext | |
| subject keywords | Flight Operations | |
| subject keywords | Spacecraft | |
| subject keywords | Test & Verification |