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NASA-LLIS-0486
Lessons Learned - Conduct Post Test Examination of Lot Acceptance Hardware for Incipient Failures (1993)
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:10:48Z | |
| date available | 2017-09-04T15:10:48Z | |
| date copyright | 35418 | |
| date issued | 1996 | |
| identifier other | AQBEQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/9168 | |
| description abstract | Abstract: During lot acceptance test of ten Mars Observer pyro valves, none failed. Yet, post-test examination showed that each of these valves had sustained erosion (burning) of about 50 percent of their threads. A study showed that some firings result in the pyro being ejected from the valve body at speeds of approximately 200 m/s, which could damage critical hardware. Users of NSIs should be alerted to this possibility. Acceptance or qualification testing should include post-test examination of inferred margin or incipient failure modes. The use of titanium in pyrotechnic applications should be avoided. | |
| language | English | |
| title | NASA-LLIS-0486 | num |
| title | Lessons Learned - Conduct Post Test Examination of Lot Acceptance Hardware for Incipient Failures (1993) | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1996 | |
| contenttype | fulltext | |
| subject keywords | Energetic Materials - Explosive/Propellant/Pyrotechnic | |
| subject keywords | Flight Equipment | |
| subject keywords | Hardware | |
| subject keywords | Spacecraft | |
| subject keywords | Test & Verification |
