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NASA-LLIS-0740
Lessons Learned – Deficiencies in Mission Critical Software Development for Mars Climate Orbiter (1999)
Year: 2000
Abstract: Abstract:
The root cause of the MCO mission loss was an error in the "Sm_forces" program output files, which were delivered to the navigation team in English units (pounds-force seconds) instead of the specified metric units (Newton-seconds). Comply with preferred software review practices, identify software that is mission critical (for which staff must participate in major design reviews, walkthroughs and review of acceptance test results), train personnel in software walkthroughs, and verify consistent engineering units on all parameters.
The root cause of the MCO mission loss was an error in the "Sm_forces" program output files, which were delivered to the navigation team in English units (pounds-force seconds) instead of the specified metric units (Newton-seconds). Comply with preferred software review practices, identify software that is mission critical (for which staff must participate in major design reviews, walkthroughs and review of acceptance test results), train personnel in software walkthroughs, and verify consistent engineering units on all parameters.
Subject: Configuration Management
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T18:49:35Z | |
| date available | 2017-09-04T18:49:35Z | |
| date copyright | 02/24/2000 | |
| date issued | 2000 | |
| identifier other | KSCEQCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;query=autho1626ear39D40206861598F1ED52F014A/handle/yse/230908 | |
| description abstract | Abstract: The root cause of the MCO mission loss was an error in the "Sm_forces" program output files, which were delivered to the navigation team in English units (pounds-force seconds) instead of the specified metric units (Newton-seconds). Comply with preferred software review practices, identify software that is mission critical (for which staff must participate in major design reviews, walkthroughs and review of acceptance test results), train personnel in software walkthroughs, and verify consistent engineering units on all parameters. | |
| language | English | |
| title | NASA-LLIS-0740 | num |
| title | Lessons Learned – Deficiencies in Mission Critical Software Development for Mars Climate Orbiter (1999) | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2000 | |
| contenttype | fulltext | |
| subject keywords | Configuration Management | |
| subject keywords | Flight Operations | |
| subject keywords | Risk Management/Assessment | |
| subject keywords | Safety & Mission Assurance | |
| subject keywords | Software | |
| subject keywords | Spacecraft | |
| subject keywords | Test & Verification |