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NASA-LLIS-0591
Lessons Learned – Pyrovalve Blow-by May Interact Violently With Propellant (1993)
Year: 1998
Abstract: Abstract:
Two satellites with different propulsion system designs were lost in 1993 and 1994 when blow-by from pyrovalves interacted violently with propellants. To prevent detonation of fuel due to the compression of hydrazine and its ignition by pyrovalve blow-by, use non-pyrotechnic valves or a zero blow-by pyrovalve design, or fire a pyrovalve only when there is a vacuum downstream of the valve.
Two satellites with different propulsion system designs were lost in 1993 and 1994 when blow-by from pyrovalves interacted violently with propellants. To prevent detonation of fuel due to the compression of hydrazine and its ignition by pyrovalve blow-by, use non-pyrotechnic valves or a zero blow-by pyrovalve design, or fire a pyrovalve only when there is a vacuum downstream of the valve.
Subject: Energetic Materials - Explosive/Propellant/Pyrotechnic
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:27:51Z | |
| date available | 2017-09-04T16:27:51Z | |
| date copyright | 05/14/1998 | |
| date issued | 1998 | |
| identifier other | UECEQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/90993 | |
| description abstract | Abstract: Two satellites with different propulsion system designs were lost in 1993 and 1994 when blow-by from pyrovalves interacted violently with propellants. To prevent detonation of fuel due to the compression of hydrazine and its ignition by pyrovalve blow-by, use non-pyrotechnic valves or a zero blow-by pyrovalve design, or fire a pyrovalve only when there is a vacuum downstream of the valve. | |
| language | English | |
| title | NASA-LLIS-0591 | num |
| title | Lessons Learned – Pyrovalve Blow-by May Interact Violently With Propellant (1993) | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1998 | |
| contenttype | fulltext | |
| subject keywords | Energetic Materials - Explosive/Propellant/Pyrotechnic | |
| subject keywords | Hardware |