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NASA-LLIS-1620
Lessons Learned – Deep Impact Reiterates the Need for Peer Review and Contractor Oversight
Year: 2005
Abstract: Abstract:
The over-current detection scheme for Deep Impact spacecraft heater circuitry failed to detect an over-current condition during ground test due to an inadequate circuit design and test design. The root cause was inadequate contractor oversight and peer review. The lessons learned from the MCO mission loss on the value of detailed technical review and contractor oversight must be re-emphasized, and test configurations should be subjected to FMEA and feature positive controls limiting electrical current.
The over-current detection scheme for Deep Impact spacecraft heater circuitry failed to detect an over-current condition during ground test due to an inadequate circuit design and test design. The root cause was inadequate contractor oversight and peer review. The lessons learned from the MCO mission loss on the value of detailed technical review and contractor oversight must be re-emphasized, and test configurations should be subjected to FMEA and feature positive controls limiting electrical current.
Subject: design error
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:48:02Z | |
| date available | 2017-09-04T15:48:02Z | |
| date copyright | 08/29/2005 | |
| date issued | 2005 | |
| identifier other | PZXCQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/50915 | |
| description abstract | Abstract: The over-current detection scheme for Deep Impact spacecraft heater circuitry failed to detect an over-current condition during ground test due to an inadequate circuit design and test design. The root cause was inadequate contractor oversight and peer review. The lessons learned from the MCO mission loss on the value of detailed technical review and contractor oversight must be re-emphasized, and test configurations should be subjected to FMEA and feature positive controls limiting electrical current. | |
| language | English | |
| title | NASA-LLIS-1620 | num |
| title | Lessons Learned – Deep Impact Reiterates the Need for Peer Review and Contractor Oversight | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2005 | |
| contenttype | fulltext | |
| subject keywords | design error | |
| subject keywords | Flight Equipment | |
| subject keywords | Ground Equipment | |
| subject keywords | Ground Operations | |
| subject keywords | Hardware | |
| subject keywords | opto-coupler | |
| subject keywords | overcurrent detection | |
| subject keywords | overcurrent protection | |
| subject keywords | Payloads | |
| subject keywords | Spacecraft | |
| subject keywords | Test & Verification | |
| subject keywords | Test Article | |
| subject keywords | test damage | |
| subject keywords | test-induced failure |