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NASA-LLIS-0059
Lessons Learned - RCS Thruster Heater Power During Ferry Flight Stopovers; RCS Thruster Ferry Plug Removal; Hypergol Exhaust System Indicator Lamp
Year: 1992
Abstract: Description of Driving Event:
During the removal of the flight reaction control system (RCS) ferry plugs from the orbiter, between 1/4 and 3/4 cup of monomethylhydrazine (MMH) fuel spilled from the thruster. The liquid contacted the gloves and right shoe of the technician pulling the plug. The RCS thruster valve seals have a history of sensitivity to temperatures below 60 deg F. To limit the potential for leakage, the RCS thruster heater power unit should remain on throughout the Dryden Flight Research Facility (DFRF) safing and ferry period, including flight stopovers and KSC offload.
During the removal of the flight reaction control system (RCS) ferry plugs from the orbiter, between 1/4 and 3/4 cup of monomethylhydrazine (MMH) fuel spilled from the thruster. The liquid contacted the gloves and right shoe of the technician pulling the plug. The RCS thruster valve seals have a history of sensitivity to temperatures below 60 deg F. To limit the potential for leakage, the RCS thruster heater power unit should remain on throughout the Dryden Flight Research Facility (DFRF) safing and ferry period, including flight stopovers and KSC offload.
Subject: Energetic Materials - Explosive/Propellant/Pyrotechnic
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T18:45:15Z | |
| date available | 2017-09-04T18:45:15Z | |
| date copyright | 02/12/1992 | |
| date issued | 1992 | |
| identifier other | KGYCQCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsessionid=3826AF679D40527318548F1EFDEC014A/handle/yse/226730 | |
| description abstract | Description of Driving Event: During the removal of the flight reaction control system (RCS) ferry plugs from the orbiter, between 1/4 and 3/4 cup of monomethylhydrazine (MMH) fuel spilled from the thruster. The liquid contacted the gloves and right shoe of the technician pulling the plug. The RCS thruster valve seals have a history of sensitivity to temperatures below 60 deg F. To limit the potential for leakage, the RCS thruster heater power unit should remain on throughout the Dryden Flight Research Facility (DFRF) safing and ferry period, including flight stopovers and KSC offload. | |
| language | English | |
| title | NASA-LLIS-0059 | num |
| title | Lessons Learned - RCS Thruster Heater Power During Ferry Flight Stopovers; RCS Thruster Ferry Plug Removal; Hypergol Exhaust System Indicator Lamp | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1992 | |
| contenttype | fulltext | |
| subject keywords | Energetic Materials - Explosive/Propellant/Pyrotechnic | |
| subject keywords | Flight Equipment | |
| subject keywords | Flight Operations | |
| subject keywords | Ground Equipment | |
| subject keywords | Ground Operations | |
| subject keywords | Hardware | |
| subject keywords | Hazardous/Toxic Waste/Materials | |
| subject keywords | Launch Vehicle | |
| subject keywords | Safety & Mission Assurance |